Documents | Seafish

Summary Document: Underwater noise, vibration, EMFs and impact on commercially important crustaceans

A summary on the impacts of underwater noise, vibration, and electro-magnetic fields (EMFs) from offshore renewable energy sites on on UK commercial crustacean species. The information provided is drawn from a literature review by St Abbs Marine Station.

FMIG Presentation 4. Marine spatial squeeze and intelligent fishing. 29 September 2022.

Paul Fernandes, Heriot-Watt University, talked about the new Smartrawl. He demonstrated how it is creating in-water improvements in selectivity.

Quality Audit of the Port of Troon - July 1997

This report presents the findings of a Quality Audit of the fishing port of Troon that examined the quality of raw material supplies to the port, standards of physical infrastrcture, operating practices and management controls.

Irish Sea Finfish and Nephrops Discard Study 1993_94

This report describes the results of a study to assess the feasibility of longer term monitoring of discarding practices in the towed gear fisheries of the Irish Sea (ICES Area VIIa) carried out during the period June 1993-August 1994. The report describes the development of methods considered suitable for assessming discard rates in these fisheries and discusses factors affecting the variation in discard rates.

Facts and Figures about the South West Fishery

Two MAFF fishery 'districts' encompass Devon and Cornwall fisheries. These extend from Lyme Regis to Fowey and Fowey to Bude respectively.

Efficient Use of Energy in Fish Harvesting_Interim Meeting

The principal rationale to hold a meeting related to the premise that fish harvesting utilises more energy to produce a kilgramme of product than any other in the food producing industry. The fishing industry should, therefore find ways of optimising its energy consumption. Responsible approaches to harvesting operations must be found that yield the desired quantity and composition of fish while at the same time being fuel efficient. This concept coincides with the need to optimise energy consumption in the FAO Code of Conduct for Responsible fishing which is also a concept being developed by the Canadian Government. The objective of the meeting was to bring together those in the inernational community who are working on research, development and commercial projects in responsible fishing operations to avoid duplication of effort.

Comparative Sea Trials on Peter Ross 'Hydrodynamic' Trawl Floats

This report describes sea trials which were carried out by Seafish Technology for Peter Ross Fishing Services Ltd to compare the performance of Peter Ross 'hydrodynamic'floats with conventional spherical floats.

PESCA Funded Fisheries Trials - Deep Water Netting Trials

Trials with deep water specification monk tangle nets were carried out on board the MFV Siarach II over a 15 day period.

Trials with Monofilament Longline gear on MFV Gannet in Whitby

A 39ft Whitby vessel, MFV Gannet was chartered for 15 fishing days between 14 January and 12 February 1985. The vessel was fitted with equipment for the purpose of monofilament longlining. The vessel worked the system for 3 weeks of trials. Catch rates were at times well up to those of traditional longliners working alongside, but on average they were lower reflecting a number of factors. The murkiness of the water, characteristic of the winter months, appeared to obscure the advantages of monofilament lines. The time taken to bait the monolines and the crew learning time are problems still to be resolved.

Observations and Trials of Fish Handling on Small Vessels - Stage 2 (incomplete)

This project acknowledges the need for improvement in the quality of fish from inshore vessels, the majority of which are small and operate as day trip boats. The large fleet of inshore vessels under 16.5m lands an estimated value of fish of at least £100 million per annum. However, the quality of a proportion of this catch is often far from what it could be due to lack of facilities and temperature control. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Findings of a Basic Water & Effluent Survey Carried Out at Andrew Leiper Ltd

As part of the North East Scotland Strategic Study, Seafish has been involved in briefly visiting representative companies in the region to survey water use and effluent production. The purpose of these visits is to estimate the general reductions in both water use and effluent strength which could be made by introducing waste minimisation. This report summarises the findings of the brief visit to Andrew Leiper Limited carried out on 29 April 1999.

Design and Commission of a Mussel Purification Plant at Kings Lynn

This report describes the design and installation of an eight tank mussel purification plant at Kings Lynn. This followed successful trials of a prototype tank incorporating multi-layer stacking and partial reuse of artificial seawater. The operation of the plant is described together with the results of monitoring at higher water temperatures than those previously used. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

An Evaluation of Six Alternative Compounded Diets for Juvenile European Lobsters (homarus gammerus L)

The high cost of feeding juvenile lobsters at Ardtoe on natural food leads to trials of proprietary palletised foods developed for other fish which can be dispersed automatically. Batches of juveniles have been fed on various palletised foods and monitored for growth and mortality and compared with a control sample fed on natural fresh food.

Discard and Effort Survey - Channel ICES Areas Viid and e 1995

Fishery resources in the English Channel are subject to a high level of exploitation by an increasingly mobile and flexible fishing fleet. Resource availability has become dependent upon recruitment variability. Effort is directed onto both quota and non quota species according to availability of resources and quota under the EC Common Fisheries Policy (CFP). Fishery resources are targeted by a variety of metiers and landed to ports in a number of nations. Management regimes and market conditions may vary nationally, regionally and seasonlly.

Further Evaluation of Square Mesh Panels to Improve Selectivity for Cod in Demersal Trawls

The report describes the most recent in a series of attempts to improve the release rates of sub legal cod from trawls. The work was carried out under MAFF Commission MF0612. In the main part of the trials square mesh side panels were used but they seemed to offer little, if any benefit. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

English channel Towed Gear Discard Study 1997/98 ICES Areas VIId and VIIe

Seafish have been funded by MAFF to carry out a pilot study to determine the feasibility of establishing a discard sampling regime in the English Channel, ICES (International Commission for the Exploitation of the Sea) Areas VIId and VIIe (see Figure 1). This report sets out to explain what a discard survey is, why it is necessary, how it is carried out and the potential benefits of such a survey to the industry. An important part of this study will also be to assess the feasibility of a self-sampling programme carried out by fishermen themselves. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

North Norfolk Coast Fishery - Evaluation of dredges for whelk fishing

The whelk fishery of the North Norfolk Coast is in severe decline with almost all the traditional inshore grounds now devoid of whelks. The nearest productive grounds to Wells-next-the Sea are 30 miles away at Cromer Knoll. This is beyond the range of some vessels and is difficult for others to work. One of the objectives of the exercise was to survey for new grounds.

The Cuttlefish (Sepia officianalis) A guide to its exploitation in UK waters

This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish. See also Seafish Report SR465.

North of Scotland Box Pool Proposal - A feasibility study

The study examined the way in which a box pool could be established in the N.E. Scotland taking advantage of the introduction of plastic boxes to replace the traditional wooden box. Two alternative systems are costed - one in which the entire stock of boxes is held by the box pool and the other in which the ownership of the boxes is shared between the pool and users. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

The Fishing Industry of the Faroe Islands - Visit Report

The visit to the Faroese fishing industry was arranged by the Western Isles Fishermens Association. The purpose was to see how another island community with a heavy dependence on fishingin its economy was organised and whether there were any ideas which could be followed through for the benefit of the Western Isles industry.

Weighing/Grading at Sea Trials aboard MFV Craigmillar

This report summarises the results of the weighing/grading at sea trials carried out aboard the CRAIGMILLAR (MFV) during week ended 10 March 1987. The principal objective of the exercise was to introduce iced, weighed and graded at sea fish in plastic boxes into the auction sale system at Fleetwood with a view to improving home landings in terms of quality and presentation and thus raising the average market value of sales.

Opportunities for Composite Fillet Portions of Blue Whiting in Inst. Catering.

A market research study carried out on behalf of the White Fish Authority (WFA) in may 1979 (Ref) to determine the acceptability of sample composite fillet portions of blue whiting in fried fish outlets in the north west of England, indicated that although the portions were well received, there was unlikely to be a demand for the product in the frying trade in current circumstances. The composite fillet concept appeared to be perfectly acceptable to the friers interviewed, but potential usage in the trade would be governed by factors such as attitudes towards frozen fish and the supremacy of cod as the main selling species. It was therefore decided to conduct a similar exercise in the non commercial sector of the catering market. Composite fillet portions of blue whiting, manufactured on a trial basis at Torry Research Station as before, were demonstrated at personal interviews with caterers in hospitals, schools and industrial canteens. The research, carried out in the early summer of 1980, indicated that there could well be potential for composite fillet portions of white fish in institutional catering. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Visit to Norwegian Halibut Research and Commercial Units

The 1990 halibut hatchery season was the most successful at Seafish Ardtoe to date. During the past year a decision was made to increase the effort by the appointment of two research personnel. The trip took place against this background, with the object of comparing results and experience with halibut units in Norway.

The Development of a Bulk Bin, Deep Layer, Down Welling, Mussel Purification System

This report describes the development of a bulk bin, mussel purification system which has been developed by Seafish. Work on this project has been underway for a number of years. It started with small scale trials conducted at the Seafish Fish Laboratory in Hull and has lead to the development of the first commercial plant at Myti Mussels in North Wales. This report outlines the physical parameters required to depurate mussels in deep layers. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Scrabster harbour. Advise on Future Fishing Port Facilities

Landings at Scrabster in 1985 of fish and shellfish were valued at nearly £2.0 million. The range of services offered by this small port are good and are steadily being improved. Seafish staff have assisted Scrabster Harbour Trust with future planning which takes into account the opportunities in the area but also recognises the close relationship the port shares with Wick some 22 miles away.

Laboratory Trials of a prototype indirect ice chilled, shelved display cabinet

This report is concerned with the development and laboratory trials of a shelved indirect ice chilled display cabinet for use in mobile fishmongers vans. Four trials were carried out to monitor product temperature and ice melt rate under simulated commercial conditions.

Scallop Working Group Briefing Paper PSP and DSP in Bivalve Molluscs

Extensive closures of scallop fisheries were experienced in the summer of 1995 due to toxic algal outbreaks of PSP. This lead to an increase in the need for sample monitoring and a heightened awareness of the problems associated with the toxic algal contamination of bivalve shellfish. This briefing paper was produced for the Scallop Working Group meeting on the 23rd February 1996. It provides some background information about the different types of toxic algae and their effects and outlines the current legal position regarding product standards and monitoring. The Scallop Working Group is a cross sectoral industry group of fishermen's associations, buyers and processors which meets regularly to discuss issues of concern to the scallop industry.

BP Exploration Fishing Activities in Way of Forties Pipeline Route

The pipeline route passes through four ICES 'statistical rectanle' areas. Each statistical rectangle comprises an area bounded by one degree of longitude and one half degree of latitude. The rectangles are defined by Sea Area (IVa is the Northern North Sea and IVb is the Central North Sea) together with a number for each individual rectangle. The dividing line between Northern and Central North Sea Areas lies at latitude 57 o 30'N and is crossed by the pipeline.

Biological Criteria for the Depuration of Pacific Oyster

The criteria for depuration plant design are discussed; minimum and maximum temperature are defined and target minimum oxygen levels set. Results of experiment work on oyster density, water floor rates and bacteriological results using model systems and a prototype commercial design are presented. The results obtained in the experimental work were similar in terms of oxygen consumption and depuration to those obtained in the prototype. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Quality Audit of the Port of North Shields - August 1997

This report presents the findings of a Quality Audit of the fishing port of North Shields. The audit examined the quality of raw material supplied to the port, standards of physical infrastrcture, operating practices and management controls.

Flume Tank Testing of a Vee Type and two Morgere Otterboards

The EEC Contract TE 1-214 is aimed at a better understanding of otter board design and performance. It is being jointly carried out by three E.C. research institutes - IFREMER (France), DIFTA (Denmark) and Seafish (UK) The work is carried out in the flume tanks operated by the institutes and full scale trials are then carried out at sea on the French research vessl Gwen Drez.

Investigations into the Corrosion Problems Associated with the Fishroom Chilling System - MFV

This report describes the investigations into the problem of accelerated corrosion of the copper pipework, located at the top of the fishroom and also in the shelterdeck area on MFV 'Challenge II'. Similar problems were experienced on MFV 'Seagull' and the laboratory report into samples from that vessel suggested hydrogen sulphide attack.

Study of the Southern Section of the English East Coast Fishing Industry

A comprehensive overview of the fishery and associated industry is included. The current fish stock situation in the North Sea in particular as it affects the cod quota allocation emerges as a vitally important local issue to the majority of inshore fishers. The Wash fishery is heavily dependant upon shellfish resources and there are two areas of concern there viz. the impact of impending EC fish hygiene regulations and the serious decline of molluscan shellfish stocks in 1989. Lowestoft's offshore fishery dependent mainly on the plaice is buoyant and indeed the frustration there is that of constraint investment owing to the overall UK fleet's perceived over production. There are problems with regard to repayment of investment with the new fish market.

An Analysis of Fish Quality & Temperature Data from a Survey of UK Ports

This report, prepared as supplementary information for an MSc thesis describes the methodology used for the 1985 SFIA Port quality survey, presents a model of quality change at varying temperatures, analyses the survey data for the effects of the various handling practices in use aboard vessels and at the ports, and presents an estimate of the UK distribution of the quality of fish at first sale (see also IR 1294).

Design of new fish sorting and handling system for Fleetwood Fish Market

Following from the Authority’s involvement in the introduction of the ABCO pneumatic dischargers at Fleetwood, the objective of this project has been to design a scheme to improve the efficiency of sorting and handling the fish on the market after discharge, and thus to further reduce the cost of landing vessels. This report describes the design of the system. The subsequent manufacture and trial of the system will be reported separately. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Cooling of Cooked and Smoked Fish in Retail Displays - Report of Laboratory Trials

From April 1993 Retailers will find it difficult to comply with the Food Hygiene (Amendment) Regs which will require mongers to keep cooked and smoked fish products at or below 5 degrees centigrade. These products cannot be directly iced because of the adverse effect of appearance and texture. This work was carrid out with the aim of developing a simple, inexpensive storage and display system for these products in a retail environment, applicable to both shops and retail vans.

Study Tour of UK Fish Industry Representatives to Ijmuiden and Urk 26/28 Sept

There are considerable traditional links between the Dutch and British Fishing and processing industries and in many areas the two countries are competing in the same markets. Today there is investment by Dutch companies in UK processing firms and similarly investment by UK firms in the Netherlands Fish Industry. Both countries have to face changes brought about by the new health and hygiene standards based on the EC Directives. The purpose of the Study Tour was mainly to see how the two countries were making progress towards putting into place these standards. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Fishing Vessels Safety Grants Schemes, Annual Report 1998/99

This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish

Static Fishing Nets - Experiments to reduce unwanted bycatch and bottom debris

In August 1987, Seafish carried out sea trials to assess the efficiency of trammel nets constructed of a number of alternative materials IR1341 refers. One of the main objectives of the work was to assess the effectiveness of monofilament nylon used in the construction of trammel nets with the aim of reducing net clearing time by making it more easy to remove crabs and bottom debris.

Estuary Profile for Mollusc Production Solent - South Coast

This report is the second in a series of profiles of estuarine fisheries areound the UK. It describes the various shellfish fisheries in the area, the levels of exploitation, the problems and the prospects for expansion and development of these fisheries. The most important species in the area are oysters and the American hard clam.

Sea Trials on a 150H.P. Dual Purpose Trawl (Model - Full Scale Correlation)

This report describes sea trials carried out aboard MFV Sydo on a dual purpose prawn/whitefish trawl of 500 x 90mm mesh fishing circle. The Sydo is a 46ft trawler with a 170 h.p. Gardner engine. The purpose was to gather technical data on the gear performance to a high enough standard to use for a model - full scale correlation exercise.

Analysis of the impact of proposed hygiene legislation on Billingsgate Fish Market

Although Billingsgate Fish Market was established on its current site in 1982 its physical design, layout and operation reflect traditional practices and standards that may no longer be appropriate in the modern food industry. This report provides an analysis of the impact of proposed EU Food Safety Regulations upon the market and makes recommendations with regard to compliance.

A Technical Study of Fish Processing in the UK

This report examines primary processing in the UK during the middle 1980s. Its purpose is to provide a frank appraisal of the industry and with other food industries and overseas fish processors. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Subsea Strathspey Project Analysis of Risks from Fisheries Activities

This report contains the findings of a study carried out by Seafish to assess the risks to a proposed underwater wellhead/manifold assembly to be established by the client at a defined location. A feature of the assembly is the relatively short expected operating life and the proposed absence of surface installations for much of the operating period of the installation. The study addresses itself to identifying current and future levels of fishing activitiy in the area, the loads to be carried by the underwater assembly should fishing gears come into contact with it, and possible means of preventing such contact. As part of the study Seafish have produced a chartlet which it is proposed could be circulated widely to fishing vessel skippers likely to operate in the area.

Fish Quality in the Western Isles: The Influence of Shore Facilities

This contract study was undertaken on behalf of Highlands and Islands Enterprise. The aim of which was to determine whether and how the adequacy of shore facilities in the Western Isles was influencing the quality of fish and shellfish landings. The Seafish consultants undertook extensive field visits and interviewed all section of the industry to discover their perceived needs. The value of and trends in landings were also assessed as a means of justifying the recommendations.

An Introductory Guide to Cultivation of the Queen Scallop

This manual was prepared for a course in shellfish cultivation held at the MFU in March 1987. It is aimed at the new entrant into fish farming giving advice on the basic biology of queen scallops, the equipment needed and some of the problems which will be encountered in marketing farmed products. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

The Highland Region. The Prospects for Fisheries and Aquaculture in the 1990's

Part of the Highland Regional Council's structural policy is to make the best use of its natural and human resources. This includes investments in both fishing and aquaculture as well as encouraging development of these industries through the provisions in its Structure Plan 1990-99. Previously the White Fish Authority prepared an advisory paper for the Council in 1980 entitled 'The Fisheries in the Highland Region - A study in conservation and development.

Study Tour to Iceland 13 - 17 May 1998

This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

A Detailed Study of Chilled Fish Retailing in the UK

The report gives a detailed presentation and analysis of the technical, legislative and financial aspects of chilled fish retailing. The information provides a database for use in the production of guidelines. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish

Findings of a Basic Water & Effluent Survey Carried Out at French Fish Limited

As part of the North East Scotland Strtegic Study, Seafish has been involved in briefly visiting representative companies in the region to survey water use and effluent production. The purpose of these visits is to estimate the general reductions in both water use and effluent strength which could be made by introducing waste minimisation. This report summarises the findings of the brief visit to French Fish Limited carried out on 5 May 1999.

Evaluation of Technical Conservation Measures in UK Nephrops Fisheries - New Trawl Designs

This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Mussel Purification - Further Developments of a Scale Deep Stack Purification Tank

Following earlier trials the very high density deep stack purification tank initially developed by David Coulson and Mick Butler has been improved and in particular the water flow rate increased yet further. In a series of 6 purification trials the effectiveness of the tank has been demonstrated provided that tank loading is limited, water flow rate is high, temperature is controlled and water re-use is limited. The tank has been granted a provisional operating licence. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Study to forecast the commercial cost of farming plaice

Much of the Authority’s early work in rearing marine fish was concentrated on plaice, however as the trials data accumulated over the late 60’s and early 70’s, it became apparent that, despite its suitability as a farm animal, the plaice could not under the market conditions prevailing recover its costs of production. This was demonstrated by a joint study with the Central Electricity Generating Board (ref 1) using 1971 data, which concluded that the estimated production cost of farmed plaice per ton, would be nine times the then value per ton of current trawler landings. This report has been produced from a scanned original produced in April 1977 and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

A Review of the First International Conference on Molluscan Shellfish Safety

The First International Conference on Shellfish Safety was held in New South Wales, Australia on 13-17 November 1994. It followed two successful conferences on Shellfish Depuration in 1988 and 1992 in the USA and France. This report contains the abstracts of the papers, a brief summary of the presentations, the conference recommendations and some interpretation of these with regard to the UK industry. An appendix outlining some of the illness associated organisms detailed in the papers is included. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Proceedings of the Humber Waste Seminar, 12 June 1997

These are the papers submitted at the Seafish Humber Waste Seminar, held at TC's club in Grimsby on 12 June 1997. Recommendations and findings are based on surveys carried out at a number of fish processing companies in the Humberside region. This collection of papers aims to provide an introduction to relevant waste issues and highlights some areas where waste minimisation can be put into practice. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

The Fisheries of Eastern Scotland - A Regional Review

The South Eastern Region of Scotland has always had a long tradition of fishing and many communities have become dependant on the sea for a living. The depletion of North Sea stocks and the decline of local processing have caused severe difficulties in recent years. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Lyme Bay plaice sampling trip 13-14 March 1999

According to local sources the Lyme Bay area usually supports a plaice (Pleuronectes platessa)fishery through the month of April, exploited by beamers working from Brixham. During the first quarter of this year however, vessels reported significantly larger catches from mid-February through to early March. Following approaches by the SWFPO, CEFAS arranged with Sea Fish for a Discard Officer (DO) to carry out a sampling trip to examine the current plaice catch in the Lyme Bay area.

Mussel Spat Collection and Cultivation Trials in Wales using Bouchots 1987-89

This report describes an investigation into the viability of using the French bouchot pole and Italian pergolai net stocking method for cultivating mussels in South Wales. A modified trial was established in North Wales to accommodate reduced tidal ?. Seed was collected from Morecambe Bay and Caemarfon and monitored over a two year growing period. A computer program was developed to compare growth performance at each site. After a T. Wrayo year growing cycle the mussels averaged 47 mm; 38% meat yield and trade opinion indicated a minimum price of 450/tonne. Costings suggest that for an investment of 20,000 a return of 45,000 per annum is projected. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

A Profile of the South Coast Fisheries - Lyme Regis to Selsey Bill

The fishing sector of the Southern Sea Fisheries District, of Lyme Regis to Selsey BIll, is typified by small-boat (below 12m) operators who collectively lack organisation and representation. It is estimated from anecdotal evidence (see p.2) that in the order of 350 fishing boats operate full time from numerous bases seriously lacking in infrastructure support. Most boats are owner operated, with the only fleet operation being that of Johnson’s Sea Enterprises of Portsmouth who operate four large beam trawlers. In excess of 300 other craft, all less than 12m operate on a part time or casual basis. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

An Investigation into the Conditions Required for the successful Shucking of Wash Mussels

Wash mussels taken from intertidal beds have exhibited problems during the shucking process to obtain good quality meats. The problem is identified as relting to rapid heat transfer to loosen the meats and the thinner shelled mussels from sub-littoral zones are likely to be more suitable for processing. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Building a 15m Multi-Purpose Fishing Boat for West Summatra SFDP

This is a boat building manual describing the entire process from lofting to completion of all timber work on a wooden 15m vessel built in a yard with limited resources. Sketches are included. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish

Double Rig & Separator Trawl Trials held in Firth of Forth

The principle of separating the catch within a trawl has been studied for some time by the Department of Agriculture and Fisheries for Scotland (DAFS) and by the Sea Fish Industry authority (SFIA). It is particularly valuable as a means of separating demersal fish from prawns Nephrops Norvegicus and sea bed debris since the latter two tend to damage the former. The SFIA see value in such a trawl both to improve the quality fo the catch and to make for easier work in the sorting of the catch on deck.

Retail Overview Q1 2012

Q1 2012. Retail Summary (focus on chilled): Seafood value, volume, value; share of trade; switching and promotions; most popular species; economic context; demographics; UK Shopper; Insight

Part 1 General Requirements u15m 01Jan2013

2022 Q2 Seafish Seafood in Foodservice

Seafood in foodservice performance summary including channel breakdown and trends, data to year ending June 2022.

Nutritional Profile - Squid

The squid nutritional profile provides the macronutrient, vitamin and mineral value of the molluscs caught in English waters.

Nutritional Profile - Halibut

The halibut nutritional profile provides the macronutrient, vitamin and mineral value of the fish caught in English waters.

The Development of a Series of Three Purification Tanks of Standard Design and their use with Artificial Seawater

In England and Wales plants used for the purification of bivalve molluscs must be licensed by the Department of Health following technical approval by the Ministry of Agriculture, Fisheries and Food. This can only be given if such plants are constructed to meet generalised design criteria specified by MAFF and can be shown to cleanse molluscs to a satisfactory standard.

An assessment of optimum environmental criteria for the successful depuration of Ostrea edulis, Mercenaria mercenaria, Tapes decussatus, Tapes philippinarum, Cerastoderma edule, and Mytilus edulis, in the UK

The successful operation of a depuration system for bivalve molluscs requires them to be in good condition and their optimum physiological requirememnts to be maintained during the period they are immersed. These include mollusc density, seawater quality, salinity, temperature and dissolved oxygen level. Seafish have over a period of several years investigated the depuration of both mussels M. edulis and oysters C. gigas and as a result introduced changes to the established design criteria for these species.

West Ross Pesca Plan 1995/6: Investigations into the handling and live storage of the whelk Buccinum undatum

This report describes research investigating the transport and storage of the live whelk, Buccinum undatum. The project forms part of the West Ross Pesca Plan to investigate opportunities for diversifying fishing effort within the region. The plan has been implemented by the Highland Council who wish to reduce pressure on heavily exploited species. Whelks are not considered to be fully exploited and market demand is good. However, there is a requirement to improve handling and transport to ensure a quality product from a region with transportation difficulties.

Fishing Trials of a 520 Dual Purpose Prawn/White Fish Trawl Fitted with a Separator Panel

The results of a Water and Effluent Study carried out at Norbrit Fish Sales Limited in October 1997

In the near future new environmental legislation will add greatly to the cost and difficulty of disposing of waste water. This presents a significant problem to the fish industry. Seafish has commissioned a number of water audits in fish processing companies, to look at water usage and effluent production, with a view to minimising both.

The Results of a Water and Effluent Study Carried Out at Shetland Catch Limited in August 1998

In the near future new environmental legislation will add greatly to the cost and difficulty of disposing of waste water. This will present a significant problem to the fish industry. Seafish has commissioned a number of water and effluent audits in fish processing companies, looking at water use and effluent production with a view to reducing both. This report is concerned with the audit of Shetland Catch Limited.

Discard and effort survey Channel ICES areas VIId, e, f and h 1997/8 and fisher self-sampling

The work reported completes the Seafish Channel Discard and Effort survey programme begun in 1995 (Course et al 1996). This survey is intended to obtain a description of the pattern of discarding in the UK towed gear metiers of the English Channel and to examine the feasibility of carrying out discard monitoring programmes on a sustained basis. Many of the commercial species caught by the Channel fleets are at or near full exploitation, meaning that the availability of the resource to those fleets is subject to quota allocations and recruitment variability.

Square Mesh Selector Panels as a Means of Improving Selectivity of Demersal Towed Fishing Gears

This report is a summary of all the work carried out so far by Seafish in collaboration with others and in particular with the Marine Laboratory in Aberdeen. The trials were carried out on various types of commercial fishing vessel engaged in the North Sea and Irish Sea demersal fisheries. The details of each vessel are given in the report. The methodology adopted to make comparisons has varied. Selectivity data is best obtained by using a small mesh codend cover which measures the volume and species mix and size escaping from the main net. However, the essential purpose is to obtain comparative data on discard levels between a standard diamond mesh trawl and one which has been modified to give the undersized fish the maximum opportunity to escape. It is concluded that the use of a square mesh panel in the top of the extension will substantially reduce the level of discards of haddock and whiting and that such a step is worth taking now as a practical contribution to stock conservation. The Seafish recommendations are outlined in a Technical Information sheet appended to this report. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Seafish Insight: Fishmeal production and trends. August 2022.

This summary of global fishmeal production and trends is taken from the United Nations Food and Agriculture Organisation (FAO) State of World Fisheries and Aquaculture (SOFIA) report 2022.

Guide to Fisheries Management

This guide describes the political and science framework in which fisheries management operates at a local, national and international level.

Cuttlefish Quality and Handling Trials

In conjunction with the Marine Technology department's cuttlefish capture trials, the Fish Technology department conducted trials to investigate factors affecting cuttlefish quality. The trials studied the effects of both icing delay and gutting delay upon cuttlefish quality. Although the extent of the trials was limited they showed that cuttlefish spoil rapidly if not chilled and that even a short delay of 6 hours between bringing them aboard and icing has a significant effect on quality. The gutting delay trials have shown that the gut membrane of the cuttlefish is very strong, and for cuttlefish stored from capture at chill temperatures, it takes approximately 9-10 days before this membrane weakens, ruptures and effects the cuttlefish's quality. Some D.A. Massonage to cuttlefish was noted, caused by certain capture methods used, especially pots. See also Seafish Report SR467. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Estuary Profile Conwy N. Wales

The Conwy is the most westerly of the major estuaries in North Wales. The main shell fishery is for mussels valued at £34,000 in 1986. The fishery is under threat from a massive road tunnel scheme to be dug under the estuary in 1987.

Review of the Dorset Coast

This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Artificial Lobster Habitats - A review

This paper reviews current knowledge on lobster (Honarus sp) life cycle and habitats. The information is intended to assist in the planning of an artificial island in Poole Bay with a view to ensuring that the habitat would be suitable for lobster habitation.

Instrumented Trials on 'Sharona II'

The vessel is a 22.62 metre (74 feet) wooden trawler from the yard of J & G Forbes at Sandhaven. The vessel has a propulsion engine which drives a five bladed fixed pitch propeller through a reverse reduction gearbox.

Reducing Seabed Contact of Trawling: Design and model test of a semi-pelagic shrimp trawl for the pink shrimp fishery

Design and model test of a semi-pelagic shrimp trawl for the pink shrimp fishery.

Levy Regulations 1999 (levy rate amendment)

The Sea Fish Industry Authority (Levy) (Amendment) Regulations 1998 Confirmatory Order 1999

Seafood import volumes by port

The volume of medium risk and low risk seafood imports to top GB ports of entry to support port preparation for Border Target Operating Model requirements.

FMIG Presentation 5. Fisheries Management Plans (FMPs). 17 January 2023.

Isobel Johnston, Marine Management Organisation, spoke about Channel non-quota demersal stocks (NQS). This file may not be suitable for users of assistive technology. If needed please request an accessible format.

Tariffs on seafood imported into the EU

This information document gives an explanation of tariffs and tariff regimes in force in Europe. It gives some backround into the preferential tariff regimes such as the Generalised System of Preferences (GSP), and how tariffs are affected by trade arrangements between the EU and other countries. It gives some examples of tariff-free or low-tariff quotas, including autonomous tariff quotas (ATQs). This document is an update to the March 2017 document on seafood tariffs.

Pair Seining Trials on Grimsby Anchor Vessels

This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish

Noise Reduction Methods on European Fishing Vessels

Much work is being done in Europe to study the sound levels and exposure times of fishermen whilst at sea carrying out their duties and this is a means of assessing the risk of hearing damage. A way of reducing risk is to limit and reduce noise in the spaces of fishing vessels to a safe level. Since many vessels have dangerous levels, practical onboard research into cost-effective noise reduction methods is being carried out. The main object of this report is to describe some work being carried out to reduce one particular problem, that of hydraulic noise. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

The integrated boxing of Nephrops - Comparative Trial

This trial arose due to concern about spoilage of typically handled Nephrops norvegicus (nephrops) catches. For the most common 1 day trip the practice is not to use ice and generally, at best, 2 day trip vessels top ice only to boxes in the hold. There has been a trend toward landing whole nephrops rather than tails an there is widespread belief that direct icing is harmful to whole nephrops. This comparative trial applied proper boxing principles, ie, weighing and correct icing, alongside usual stowage practice. Two successive trips were made on a representative vessel of each type ie, 1 day and 2 day trips from Mallaig. The fish quality results were obtained by following the trial catches through processing at D A Macrae Ltd., Sunderland. Apart from weighing and icing at sea the trial included observations of practice and temperature. The result indicate that for whole nephrops proper boxing and icing can reduce temperatures of the product to less than 2°C which gives considerable value advantage to 2 day trip catches on processing, and a discernible freshness improvement to 1 day trip catches. Icing did not have any apparent adverse effects. Weighing at sea was found to be operationally feasible with potentially suitable accuracy for commercial application. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Trials to Determine DAF Fish Effluent Treatment

As the Urban Waste Water Treatment Directive (91/271/EEC) demands tighter control of the quality of effluent discharged into ~EU controlled waters, many coastal processors face dramatically increased effluent disposal charges. It is likely that most companies will use basic solids separation equipment to minimise effluent disposal costs, whilst larger companies may opt to use more sophisticated equipment to further treat the effluent themselves. Trials were carried out at three factories to determine the effectiveness of rotary wedge wire screening following by dissolved air flotation (DAF) for treating herring and white fish processing effluent. A range of chemical flocculants were tested to optimise DAF treatment. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish

Highland Regional Council Fisheries Plan 1991-98

This report is a summary of the work carried out by the Seafish field team during April and May 1991. The subjects covered include a review of the international trade in fish and shellfish and the local issues relating to the fisheries and fishing harbours of the Highland Region.

Satellite Based Monitoring System for EEC Fisheries

This report has been prepared by Seafish as a contribution towards a study in which the merits of a satellite based montiroing system are to be reviewed against a number of fisheries management options and for which the basic parameters of a proposed system would be defined. The remit of Seafish is to provide necessary information regarding the range of nations' fleets which are based in the northern waters of the EEZ of the Community (basically the areas of the Baltic, Irish and North Seas and of the Atlantic Ocean north of Finistere). At present the waters are fished by Member Nation vessels from Belgium, Denmark, Eire, France, Geermany, Holland, Spain and the UK and much of the commentary is made in respect of the efforts of these fleets.

Overview of data-limited stock assessment

This document gives an overview of how fish stocks are assessed when there are not sufficient data available to use conventional models. ICES’s methods for assessing data-limited stocks are outlined, also worldwide trends in data-limited stock assessments

Investigation of the Relative Fishing Effort exerted by Towed Demersal Gears on North Sea Human Consumption Species

The main objective of this project was to investigate the influence of vessel and gear parameters upon the Relative Fishing Power of Danish, Scottish, English and Belgian fishing vessels operating towed gears in ICES IVb and IVc to catch cod, haddock, whiting, plaice or sole.

Mussel Purification Laboratory Scale Trials of Deep Stack Purification Combining Re-use of Artificial Seawater and Direct Aeration

To make large scale mussel purification more cost effective and to improve its control, Seafish has developed a modular, deep stacking purification tank in which artificial seawater is re-used many times. Having demonstrated in principle that the system would work, as described in TR's 312 and 339, Seafish has now conducted trials with a deep stacking purification tank using direct aearation instead of water circulation to further decrease the costs of the system. A direct aearation system is cheaper as it does not need expensive pumping equipment.

Trials to Compare the Thermal Performance of a New Design of CRT Non-reusable Double Walled Fibreboard Fish Box with Expanded Polystyrene and Single Walled Fibreboard Boxes

Trials were carried out to compare the thermal properties of expanded polystyrene (EPS), single walled fibreboard (SWF) and double walled fibreboard (DWF) boxes. The boxes were tested in an environmental chamber and fish fillet temperature in each box was recorded for two time-temperature profiles. The first profile represented an interrupted chilled chain distribution over 66 hours, such as by airfreight and the second profile represented a controlled chilled distribution of 72 hours such as by road transport. Fillets in each box were chilled using a single frozen gel-ice pack placed on top of the fillets, or using ice. The EPS box was most effective at maintaining low fillet temperature for both temperature profiles and cooling methods. The DWF box had similar but slightly better insulative properties than the SWF box. Ice chilling of fillets was more effective than a single gel-ice pack at maintaining low fillet temperatures for both temperature profiles. At the end of the trials using ice, the amount of melt water produced exceeded the capacity of the absorbent pad used. The ratio of ice used and/or absorbent pad capacity needs careful consideration to prevent fillets from soaking in melt water in non-draining boxes. Where fish is distributed in an uncontrolled chilled distribution chain, boxes with greater insulative properties, such as EPS would be advisable in order to maintain low product temperatures. Where fish is distributed in a strictly controlled distribution chain, it would be beneficial to use boxes with less insulation, to allow chill temperatures to influence product temperatures

Fishing Gear Trials relating to the Development of a Suitable synthetic Replacement for the Traditional Cotton Drift Nets as Utilised in the Cornish Pilchard Fishery. (Sardina Piolchardus)

This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

The Use of Square Mesh Selector Panels as a Means of Improving Selectivity of Demersal Towed Fishing Gear

Three series of trials with square mesh windows are described, all of which took place in the first half of 1990 off the NE Scotland, Orkney and Hebrides. The trials were a combination of comparative hauls and film using the DAFS-RCTV. The first on 'CLUPEA' showed clearly the benefits of the square mesh in releasing undersized fish and gave confidence to proceed to a commercial trial on the seiner 'KESTREL'. Finally more RCTV film and further refinements were made on a trial on the 'ST. KILDA'. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

The Development of a Suitable Synthetic Replacement for the Traditional Cotton Drift Nets as Utilised in the Cornish Pilchard Fishery

This report was the second in a series of 3 reports on drift netting for pilchards. Drift netting for pilchards is an environmentally friendly fishing method that is highly energy efficient. The fishery had ceased to be viable in the 1950s due to economic factors. If redeveloped, the fishery could bring considerable benefits though both employment and tourism. The report concluded that the old style cotton nets could indeed be replaced with a synthetic equivalent, and that the correct stiffness of the twine was identified as being very important in allowing pilchard removal without damage.

Trials of a Net Grid for the UK Nephrops trawl fisheries

This report provides data for Gear trials, which were performed on the Net Grid by Cefas and the crew of the MFV Avocet in May and June 2012.

Terms of use; bespoke Risk Assessment for Sourcing Seafood (RASS) profiles

These terms of use cover profiles of stocks and fisheries prepared by Seafish for stakeholders using the RASS scoring guidance.

Form 1 (Issue 16) - Application for Certification

Application for Certification

Bridle Angle and Wing End Spread Calculations

This easy to use fact sheet provides calculations for the wing end spread and Bridle angle of a single trawl using a calculator.

Tariffs on seafood imported into the EU

This information document gives an explanation of tariffs and tariff regimes in force in Europe. It gives some backround into the preferential tariff regimes such as the Generalised System of Preferences (GSP), and how tariffs are affected by trade arrangements between the EU and other countries. It gives some examples of tariff-free or low-tariffed quotas, including autonomous tariff quotas (ATQs).

Packaging Audit of Billingsgate Fish Market

Pira Ref: J56401a rev 2 This report covers the packaging audit of Billingsgate fish market by Pira International, as contracted by Sea Fish Industry Authority. Billingsgate market was chosen for the audit because the market demonstrates how complicated trading and packaging flows can be at UK fish markets.

Noise Reduction Measures in Flume Tank

An investigation was launched into methods of reducing noise levels from the flume tank pump room following complaints by some users that noise levels were a source of annoyance. An assessment of the noise transmission modes was made and a method proposed for attenuating the noise levels. The method was applied to one pump to check its effectiveness and the attenuation achieved is reported here. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Impact Study E.C. Health & Hygiene Regulations

Forthcoming EC Regulations on public health standards will have a considerable impact on the UK fish industry especially in the onshore sectors, of coastal fish markets, processing, transportation and wholesalers. Special provisions will be introduced for molluscan shellfish. The tone of the standards is set out in a series of drafts of which the latest is Regulation VI/3204/89 – EN Rev 1 but the details may eventually be published in the form of codes of practice or guidelines. However enough information exists to make some broad assumptions about the extent of upgrading which will be necessary. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Nutritional Profile - Crayfish

The crayfish nutritional profile provides the macronutrient, vitamin and mineral value of the shellfish caught in English waters.

Methods of transportation for scallops Pecten maximus

Physiological stress and subsequent mortality of scallop spat, overwintered and 2 year old scallops in relation to transportation method are assessed. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

SECLG Presentation 2. The recruitment dynamic. 15 November 2022.

Mark Taylor, Issara Institute, spoke about an ethical recruitment upstream seafood roadshow in Thailand. This file may not be suitable for users of assistive technology. If so, please request an accessible format.

SECLG Presentation 4. The recruitment dynamic. 15 November 2022.

Mike Park, SWFPA, talked about the recruitment of migrant fishers into the UK fishing sector and the new crewing agency. This file may not be suitable for users of assistive technology. If so, please request an accessible format.

2020 Seafish UKEU Seafood Import and Export Factsheet Finalised Data

Summary of the UK's seafood imports and exports with the EU in 2020.

UK Seafood Trade Summary 2019

This factsheet contains key statistics relating to the UK’s overall trade of seafood in 2019.

FMIG Presentation 3. Fisheries Management Plans (FMPs). 17 January 2023.

Jim Portus, Scallop Industry Consultation Group (SICG) spoke about the King scallop FMP in English and Welsh waters. This file may not be suitable for users of assistive technology. If needed please request an accessible format.

Seafish Corporate Plan 2018-2021

The new Seafish Corporate Plan for 2018-21 sets out our mission, vision and values for the next three years. The Plan includes the new High Level Objectives and strategic outcomes for Seafish, along with more detailed information about the Seafish work programmes which support them. The Plan has been developed in partnership with industry and key stakeholders and will be our key tool in communicating our delivery promise during 2018-2021.

CLG Presentation 3. Fish stock status in the Northeast Atlantic. 5 December 2022.

Ewen Bell, Centre for Environment, Fisheries and Aquaculture Science (Cefas) spoke about the status of demersal stocks. This file may not be suitable for users of assistive technology. If needed please request an accessible format.

Literature review: Isotope ratios in seafood

Seafish requested Leatherhead to provide information on the current state of knowledge on use of isotope ratios for demonstrating country of origin for seafood, notably warm water prawns. This factsheet summarises the findings of a literature review carried out in 2015.

seaa_notesonindustryworkingsession_030719.pdf

Crab and Lobster Management Group minutes - February 2023

Meeting minutes for the 10th meeting of the Crab and Lobster Management Group (CMG) which took place on 6th February 2023 via Microsoft Teams.

2021 Q3 Seafish Fish and Chips Factsheet

Fish and Chips in foodservice, performance summary including channel breakdown and trends, data to year two-year ending September 2021.

SR685 Brown Crab Industry Insight

This report provides an in-depth review of brown crab issues as reported in the media. Issues covered include; ethics of production (clawing and harvesting); contamination; misrepresentation of pack messaging and stock status.

Time Series for interpreting events in the sea

Time series are scientific measurements taken over sufficiently long periods of time. They permit the detection of rare of episodic events which would not have been apparent if collected over one year. The marine ecosystem gives good results from time series because there is a better coupling between signal and response than is normally found in land systems.

Selectivity in Trawls Selection Devices aimed at the release of juvenile cod

Seafish have a continuing programme to improve selectivity in towed gear and considerable advances have been made in reducing discards of haddock and whiting from trawls through the use of square mesh panels inserted into the upper part of the extension. There has not so far been any similar reduction in cod discards.

A study of the lobster population of Poole Bay, Dorset

As a part of the ongoing development of the Wytch Farm oilfield, British Petroleum are proposing to recover the offshore reserves by use of an artificial island which would house the drilling and extraction equipment. This would be sited in Poole Bay on seabed of low productivity. To enhance the fishery in the area BP are investigating the possibility of a lobster stock enhancement scheme centred on the island.

Highland Region - The Creel Fisheries of Caithness & Sutherland Prospects for Development 1991-99

The study has examined the creel fisheries for brown crab, velvet crab and lobster along the coasts of Caithness and Sutherland. By implication it has been necessary to include Nephrops as these are an important source of income to local creel fishermen.

Stress Measurement during launch of the M.V. Bromley Pearl - H991

In 1990, SFIA were invited by Richard Dunston (Hessle) Limited to submit a quotaion for the measurement of stresses induced at the launch of the above vessel. The stresses were to be measured by means of resistive strain gauges at nine locations (six on the main deck and three on the tank top) and records of strain levels maintained for subsequent analysis.

Technical Assessment of Multiple Bodied Trawl Development Project

The Highlands and Islands Enterprise Network approached the Sea Fish Industry Authority to provide a technical assessment for a grant application they had received. A small net manufacturer based in Thurso applied to develop a new type of multiple bodied trawl which was considered (theoretically) to be more efficient at catching certain species by increasing the total net area without the corresponding increase in resistance. They propose to design, construct and test a model in a flume tank before going on to construcing a full scale trawl for trails on a commercial vessel. The objectives of the assessment were to give an independent and impartial appraisal.

An investigation into the possibilities for improvement in fishing industry facilities at Poole

Development of the area of sheltered moorings known as Fishermen’s Dock was proposed in 1982. Subsequently, Poole Harbour Commissioners questioned the ability of the local fishermen to service a loan which would be required to meet costs. Official statistics greatly under-estimate landings and landed value and this has been confirmed by an SFIA investigation. This study also suggests alternative improvement schemes and modifications to the ‘dock’ scheme. Conclusions are reached on the ability of the full time fishermen to pay for the necessary loan based on a sampling of boat’s earnings in a study of costings for the Fishermen’s Dock and some assumed costs for modified schemes. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish

Flume Tank Testing of 1:4 scale model trawl doors

This report describes a test procedure to obtain accurate performance curves of model trawl doors in a Flume Tank. The purpose is to establish a consistent method of predicting door performance in order that fishermen and others can be advised of the best size and design of door for a particular net. The performance of a single model trawl door is assessed by measuring the tensions and angles of the warp and bridle which retain the door in a fixed position in the tank. Two coefficients are derived : CL representing lift or spreading force and CD representing the drag force. CL/CD represents a measure of efficiency of the door. The Flume Tank equipment required to measure the necessary parameters is described along with the experimental procedures. Results are given for standard flat and vee doors over a range of angles of attack and heel. This data in the form of CLand CD is used as a base against which to compare the performance of other door types. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Milford Haven Waterway Area - Development of the Fishing Industry

This report includes an overview of the existing fishing industry within the Milford Haven Waterway and that within adjacent areas where the industry is linked to that of the Waterway. The recent improvement in trading conditions has resulted in the opening up of development prospects. Allied to this additional vessels have recently been purchased by local owners. Clearly the industry cannot be expected to find the substantial investment required for the immediate renewal of vessels and shore facilities. What is equally clear is that the fishing industry must diversify its operations in order to accumulate development capital if it is to survive in the longer term. Development proposals at both Milford Haven and Pembroke Dock do however offer the possibility of the provision of an up-to-date shore base for fishing operations. These are discussed and as far as is possible costed. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Stornoway Fishermans' Co-operative Fish Processing Factory E.C. Hygiene Regulations

The Fish Processing Division of Stornoway Fishermen’s Co-operative operates from a factory building on Esplanade Quay that is leased from the council. Negotiations are currently in hand for the purchase of the factory by the Co-operative. Ground rent is payable to the Pier and Harbour Commission on whose ground the factory stands. The Fish Processing Divisions principal business is in Nephrops and Scallops, but with increasing trade in finfish. The Co-operative wish to expand their production capability and to make it more flexible and efficient to respond to raw material availability on a day to day basis, or to changes in market requirements (for products). This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Study of the Proposed Amendment to the UK Fishing Vessel Licensing System

The pressure stock licensing scheme was introduced in 1984 primarily to assist quota management and to exercise restraint on the growth of the UK fleet. The current scheme was based on wide length band groupings of 10m to 40ft, 40 to 80ft, and over 80ft registered length. This system is flawed in that vessel and engine sizes tend to increase towards the maximum possible in each length band. Thus there exists a practice of building ‘rule-beaters’, vessels at the upper end of a length band with excess power and tonnage, and capability equivalent to much larger vessels. Seafish (IDU) have, at the request of MAFF, undertaken a study of the possible impact of the amendments to the UK fishing vessel licensing scheme proposed in the consultative paper issued by Fisheries Departments to interested parties in July 1988 – ‘Proposals for Amendments to the UK Licensing System for Fishing Vessels’. It should be noted that the Seafish Board have already approved an official response to that paper which was submitted to MAFF on 15 September 1988. The results of the current study effectively confirm the opinions expressed therein. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Verification Trials of an Oyster Purification Tank for Mr JW Gardner

Keywords: purification, pacific oysters

Preliminary Assessment of the Fish Industry in the Llyn Peninsula - north Sales

This study is a preliminary assessment of the regional inshore fishing industry on the Llyn Peninsula in North Wales. It has been carried out for the Welsh Development Agency who is willing to use the Welsh Food Initiative programme to increase the value of the local fishery in terms of income and jobs. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

A Study of Squid and Its Potential in UK Water

This report is aimed to collate the current information available on squid so as to review the basic knowledge of squid and to clarify this fishery and its potential. Included in this report is a review of the animal's biology and fishery, that is to say, the scale of this fishery in the UK, the fishing methods, methods of preservation etc.

A Study of fresh fish in the UK (BRS Consultancy)

The report gives summarised results of an investigation into the road distribution arrangements within the United Kingdom and includes computer simulations of different future options. An explanation of the operation of the main computer simulation (the ‘Pathfinder’) is given in the report. As a back-up to the report, a single copy of a complete printout of a single computer programme run has been supplied by the Consultants. It defines a national consumption and delivery requirement schedule for the whole of England and Wales, in a series of 10km squares. The grid pattern contains up to 66 squares in the N-S and up to 53 in E-W direction. The print out comprises several hundred pages of A3 size paper and it is impractical to produce copies with this report. A sample segment, with a short explanation, is provided as the final appendix of this report. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish

Deepwater Fishing along the Continental Shelf - Seafish Seminar held at Banff - 15 November 1991

Deep water species found along the Eastern Atlantic Continental Slope are now being marketed in France, the USA and Japan. They are known to British fishermen but there is as yet no commercial British fishery. This report reviews the current state of knowledge based on a seminar held at Banff in November 1991. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

ICES Area VIIf selectivity Trials. Single Boat Demersal Trawl MFV 'OUR OCEAN HARVESTER' (PZ403)

These trials to measure the selectivity of a trawl in a multi species fishery when fitted with a square mesh panel were carried out on the trawl fishing grounds off North Devon and North Cornwall. The results show an indicative benefit in the use of the panel for round fish but it has been extremely difficult to achieve satisfactory statistical data due to the large number of variables. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Updated Handbook on the White fish Authority Cockle Dredge of 1968

This report is an update of the WFA hydraulic lift cockle dredge handbook of 1968 which contains descriptions and specifications of the system, working instructions and fault diganoses. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Towing Requirements for a Pair Trawl (2 x 340hp Vessels)

This report contains the performance data of a FMA Buckie Pair Trawl - BT 154, rigged with 2 bridles and rockhopper gear. It expresses the power requirements in terms of warp tensions and settings of net speed, warp length and vessel distance and defines the best settings for fuel consumption. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish

Comparative Sea Trials of plastic stack-next and stack only fish boxes

Although the wooden fish box is still commonly used in Scotland for handling fish both at sea and ashore there is a growing acceptance of an eventual change from wood to plastic boxes. Of the two types of plastic box available (stack-only and stick-nest) the stack-nest is considered a most suitable replacement and is already in use ashore but there have been reservations concerning it use at sea. From June to December of 1986, Seafish carried out a series of comparative trials on Scottish vessels to assess plastic boxes when used at sea. The boxes used were a new stack-nest design, produced to a Seafish specification as a replacement for the wooden box, and an existing plastic stack-only box of the same nominal capacity of 70 litres. The trials are described and discussed in this report This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Improving the post harvest care of small shrimp

Initial investigations have shown that it is possible for shrimp cooked at sea to meet the temperature requirements of both the Food Hygiene (Amendment) Regulations for cooked products and E.C. Fishery Products Directive, which willcome into force in January 1993. This is by the use of direct and indirect icing and insulated fish boxes to hold the cooked shrimp, on board vessel. Icing the cooked shrimp at sea also significantly extends the subsequent storage life of the product. It has also been shown possible to hold uncooked brown shrimp in ice onboard and then transfer the cooking operation ashore and produce a satisfactory product. However, during these initial trials this practice was not found to be satisfactory with pink shrimp.

A summary of the Illness Associated Organisms which can affect Molluscan Shellfish Safety

This report describes the main causative agents and the testing and control measures routinely adopted to protect the public. This report was originally written as an appendix to a report on the first International Converence on Molluscan Shellfish Safety, to provide background information on the illnesses discussed during the conference. This conference, at which Seafish presented a paper on some of their recent work on Mollusc Depuration, was held in November 1994 at the University of New South Wales, Sydeney, New South Wales, Australia.

Selectivity Trials using Square Mesh Panels in a Scottish Seine

This report is part of a continuing series of sea trials examining different methods of fish capture in an attempt to improve and standardise the design and position of square mesh panels or windows within the trawl to reduce the levels of discards whilst retaining acceptable proportions of marketable fish. On these trials double panels were tested in a Scottish seine net in order to decide on the preferred position for further trials.

Squid Jigging Trials Aboard FRV G A Reay

Squid fishing trials involving the use of bottom and midwater trawls, and hand and automatic jigging techniques with light attraction were conducted at various locations between the north east coast of Scotland and the Faroe Islands during September/October 1983.

Squid Fishing Trials Aboard MFV Joker in Cornwall

A small Cornish inshore vessel has been rigged with gas lamps and jigging equipment for catching squid. Unfavourable weather conditions prevented a proper assessment of the equipment during the Author's visit, however, a report is expected from the fishermen in due course. This report describes the installation and includes background information. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Site Visit to Inspect Oyster Depuration Tanks at la Rocque Fisheries Ltd

La Rocque Fisheries Ltd on the island of Jersey have installed three purification tanks to depurate Pacific Oysters (Crassostrea gigas) taken from their nearby oyster growing lays. The tanks, which had been built to a French design, require approval from the States of Jersey Department of Agriculture and Fisheries. Seafish were asked by La Rocque to make a site inspection and given an opinion on the suitablity of the tanks for depurating Pacific and Native (Ostrea edulis) Oysters. Peter Wilson, Senior Fish Technologist Engineer at Seafish visited on 15 April 1998.

Visit to Irvin & Johnson Limited Trawling Division, Cape Town, South Africa

In April 1992 Seafish were contacted by Rob Whitehead, Operations Manager, for Irvin & Johnson, for advice on the use of square mesh panels as means of improving selectivity in trawl gear. As a result of the initial contact a visit was made to Cape Town where my services were employed by Irvin & Johnson in an advisory capacity. I was asked to brief senior management on current research generally regarding the use of square mesh, as well as making recommendations and observations on the probable effects of square mesh on catch rates, fish quality, selectivity etc., in the South African Hake Fishery. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Cockle Dredging/Improve Performance Using a Solids Pump

This report describes the development of an improved cockle dredging system for the small (about 12 metres) vessels in the UK fleet carried out under MAFF R&D Commission 1988/89, Project Code IAG16. The major change was to use a solids handling pump for pumping water and cockles from the dredge head as opposed to the former method of a water jet pump incorporated within the dredge, which was the principle of the WFA cockle dredge developed in the 1960’s. Four different solids pumps were shore tested and three found to give satisfactory performance running at a restricted speed. The dredge head design was altered to resemble a smaller version of the standard Dutch suction dredge which has incorporated the solids pump principle for some years. The Dutch dredgers, however, are much larger than those in the UK and for this reason it was not possible to transfer the technology from one fishery to the other. Two separate shipboard installations were completed at Kings Lynn and subsequent trials in the Wash were most successful. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Regional Study - The Fishing Industry in North East England

A review of the fishery and trends since 1986 includes records of landings with values at the main landing places. There is discussion of the changing fortunes of the producer in terms of income during this period with reference to the main white fish species and Nephrops in particular. The problems associated with the business at the main port of North Shields are discussed as is the related tendency of some vessels to land fish at non traditional ports such as Blyth. Positive indications on the white fish scene are reported from Whitby and Hartlepool and in general lobster landings are holding up well though crab landings are down. In parallel with decreasing landings of whitefish, Nephrop landings and effort are up. The fleet is listed and facilities reported on for all landings. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Norfish: Nordic Fish Supplies in the Context of International Trade

The 1990s are a period of massive changes in fish supplies especially into the European Community. The Community as a whole is the largest single importing block in the World but there is keen international competition to secure supplies in the future. A major source of supply for EC and the UK in particular are the Nordic countries with whom traditional links have been long in place. The report explores these in the context of the changing situation. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Fleet Structures Model - Overview and its Use in Decision Support

The Fleet Structures Model (FSM) is a predictive model with the purpose of simulating aspects of the structural development and operation of a national sea fishing fleet in order to make comparative assessments of fleet management policy scenarios. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Scallop Predation by Crabs, in Relation to the Development of On-Bottom Cultivation

The feeding success of four species of crabs (Crustacea : Brachyura) which are potential predators of the scallop Pecten maximum (L) was studied under laboratory conditions. Liocarcinus depurator was the only species not to prey on scallops of 4 and 5 cm shell height, whereas Liocarcinus puber. Carcinus maenas and Cancer pagurus showed the greatest potential to prey on scallops and further experiments were carried out with this species using a wide size range of bivalve. Presented with scallops within the range 3-9 cm shell height resulted in the following trends : as prey size increased, the proportion of crabs feeding decreased, male and female crabs showed similar predatory behaviour, and marine fouling on scallop shells had no significant effect on crab feeding. These findings are discussed in relation to the potential for bottom culture of P. maximus. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

The Performance of High Speed Fishing Vessels in Service

The report describes a series of speed/load/fuel consumption trials on a group of commercial fishing vessels, and from the results, comments on the need to identify the correct operating criteria when drawing up specifications for such vessels. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish

The Effect of Soak Time on the Quality of Cod in Set Nets

The quality of cod resulting from net immersion periods (soak times) of between 3 and 48 hours was investigated. The trials were carried out on a 9 m boat along the Yorkshire coast during July and September 1991. The fish which were alive when brought on board were in excellent condition. After 9 hours soak the freshness of the cod progressively reduced as the physical damage increased. Over half the cod from the 48 hour soak time were spoiled beyond marketability. Recommendations to help assure quality are made.

FMIG Presentation 3. Marine spatial squeeze and intelligent fishing. 29 September 2022.

David Warwick, Seafish, talked about Seafish gear work and the new research trawl for the International Bottom Trawl Survey.

Seafish Insight: Global Slavery Index 2018 summary of social risk factors in fisheries by country. August 2019.

Seafish summary of 2018 Global Slavery Index risk factors associated with modern slavery in fisheries by country.

UK Fleet Restructuring Model - Progress Report

This report contains the progress achieved on MAFF project A.2.1 which requires the development of systems and software to provide techno-economic analyses of policies aimed at restructuring the UK fishing industry. It describes a proposed mathematical model of the fleet in terms of financial viability, the object of which is to simulate performance given specific policy scenarios, providing detail information with regard to the development of regional fleet sectors This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish

Estuary Profile. Teign Estuary - Devon

The Teign Estuary, which is situated on the south Devon coast, is long and narrow and opens into the English Channel at Teignmouth. Local fisheries are managed by the Devon Sea Fisheries Committee under their byelaw regulations. There is a regulated order area, allocated by MAFF to the Teign Musselmen's Society Ltd., covering a large part of the seabed, granting their exclusive rights to the mussels.

Investigation on 'Maranatha II' (UL33)

The vessel was delivered in 1989 and, since that time, has suffered a number of partial failures of the propulsion engine, a Caterpillar 3508, rated at 765hp at 1440 revs/min. The failures have taken the form of premature failure of inlet and exhaust valves. At or about the time of failure, excessive lub oil consumption has been noted.

Noise Level Reductions on M.F.V.

Following reports of excessive noise in the cabin of M.F.V. "Ocean Challenge" the propeller was changed to one of a highly skewed design. The S.F.I.A. monitored the change in noise and performance levels and found a reduction in noise of up to 25% with no significant reduction in performance.

Fresh Fish Supplies from Iceland

Following concerns expressed on Humberside about the future trade with Iceland and the loss of quality experienced with container fish, a mission was made to Iceland on October 1991. This report examines future trading patterns and identifies several reasons for the quality loss. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Shellfish Licensing - The French Experience

This is one of a series of reports Seafish are initiating to assess the possibilities of a shellfish licensing scheme for the UK. It looks at schemes in France, notably those for scallops for which there is experience going back to the early 1970s. These schemes are restricted to the territorial limits of up to 12 miles and are administered by the local Comite Interprofessionel des Peches Maritimes.

Fleet Structures Model - Program Documentation

The Fleet Structures Model is a series of mathematical models developed by IDU which simulated the development of a national fleet in response to chosen policy scenarios. This report, which is one of a series, provides flow charts and program listings for the policy input programs together with the main model. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Regional Study - South West Scotland

The fisheries of South West Scotland are encompassed by the Ayr and Campbeltown statistical districts. Geographically they cover the Scottish Solway coast, the Firth of Clyde and Kintyre and the Inner Hebrides as far North as Colonsay. The Solway is dominated by the Queen scallop fishery centred on Kirkcudbright. The Clyde’s centres are Ayr, Campbeltown and Tarbert with a mix of white fish, shellfish and herring. The white fish include valuable hake but the herring fishery is tiny compared with a few years ago mainly due to a scarcity of the typical large fish much sought after by kipperers. Nephrops dominate the shellfish trade contributing some 30% of the Ayr district total value landed. Campbeltown district including the Inner Hebrides is dominated by shellfish landings in terms of total value. These contribute about 90% of the total of which 50% is from Nephrops. Though much of the shellfish is trucked out of the region, there are Nephrop processors in Campbeltown, Ayr and Scotland’s central belt. White fish is processed in Campbeltown and Ayr and Queen scallops at Campbeltown, Kirkcudbright and Newton Stewart. There are major concerns at the time of writing over disappointing levels of Queen scallop landings. The conflicting interests of trawlers and exercising submarines were highlighted by the tragic incident involving the Carradale vessel ‘ANTARES’. This issue is still of major concern in the area despite much effort towards a resolution. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Wash Development Group Progress Report

The Wash Development Group completed its first year of activity in December 1986. Much progress has been made with demonstrations of the continuous hydraulic suction dredge, but there is now a shortage of mature cockles and this position will not improve before 1988. Purifiction of mussels is now progressing and a limited amount of relaying has been attempted. The report outlines the next stage which is to develop a business plan for the Wash as a whole.

web_traceabity_cmo_guide_v5_2016.pdf

Discard collection study comparing the SFIA designed nephrops trawl against commercial trawls

The latest exercise conducted under this programme has concentrated on a slightly different approach to the preceding work on by-catch reduction devices.

clg_finalminutes_191119.pdf

Nutritional Profile - Mussels

The mussels nutritional profile provides the macronutrient, vitamin and mineral value of the bivalve molluscs caught in English waters.

Top line summary of Seafish regional ethics profiles. September 2015.

Seafish commissioned a study to assess the ethical issues impacting on seafood species landed into, and imported to the UK from a wide range of countries. This work has been presented in three parts: an analytical report, leading to strategic recommendations for follow-up; a set of 15 risk assessment profiles; and a comprehensive literature review. This is a topline summary of the ethics profiles of the 15 countries or regions which Seafish, after consulting with industry representatives, has analysed. These are: Chile, China, Ecuador, India, Indonesia, New Zealand, Philippines, Russian Federation, South Africa, South Korea, Taiwan, Thailand, United Kingdom, United States and Vietnam.

Seafish analysis 2016; TACs compared with ICES scientific advice

Total Allowable Catches (TACs) are set in order to limit catches of fish to levels consistent with long term goals for fisheries management. They are set by management stock, that is fish from a given sea area and species or group of species. This analysis compares advised and agreed TACs for the North East Atlantic Stocks assessed by ICES and discussess reasons for differences

The Effect of Icing on the Quality of Trawled Whole Nephrops

The Effect of Icing on the Quality of Trawled Whole Nephrops.

Seafood Consumption (2022 Update)

Total UK seafood consumption (both in and out of home) in 2020 stood at 162.98g /person/wk. up +1.0% vs the previous year. This equates to just over one (1.16), 140g portion per person per week.

The Results of a Water and Effluent Study carried out at Croad Seafoods Limited in January 1999

In the near future new environmental legislation will add greatly to the cost and difficulty of disposing of waste water. This will present a significant problem to the fish industry. Seafish has commissioned a number of water audits in fish processing companies, looking at water use and effluent production with a view to reducing both. This report is concerned with the audit of Croan Seafoods Ltd.

Initial Trials to Investigate the Effectiveness of Sieving and Centrifugal Solids/Liquid Separation for Treating Pelagic Process Effluent

For obvious reasons, many fish processors are sited in coastal areas. These businesses currently pay relatively low effluent treatment charges as the effluent is often discharged into the sea without further treatment. The Urban Waste Water Treatment Directive has to be implemented by the end of the year 2000 and will demand tighter control of the quality of both urban and industrial effluent discharged into controlled waters. It is certain that some form of effluent treatment will be required. the level of treatment will depend on the volume and strength of the effluent and the sensitivity of the receiving water.

Estimates for Fish Processors in NE Scotland of the Reduction in Water Use and Effluent Strength Available by Water Minimisation and of the Costs of Implementing Waste Minimisation

Water and waste minimisation techniques can significantly reduce the costs associated with water use and effluent production. As part of the North East Scotland Strategic Study of Waste Management, brief visits were made to six representative Scottish fish processors to establish estimates for the reduction of water use and effluent strength achievable by waste minimisation. This report outlines the estimated reductions possible and the associated costs. These estimates can only be considered as indicative approximations for each sector of the industry at this stage. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Commercial Fishing Trials of a Twin Rig Trawling System Using a Two Warp Arrangement - 'Cygnus Star'

This report describes the follow-up work resulting from initial gear handling trials of a twin-trawl system using a two-warp arrangement. The system was evaluated in a situation as near to a normal commercial fishing exercise as was possible. The exercise took place in the Nephrops fishery on the North West coast of Scotland using the MFV ‘Cygnus Star’ which spends most of its fishing time involved in this fishery. Apart from evaluating the handling of the two-warp system itself, the opportunity was taken to examine the performance of two nets rigged with rockhopper ground gears for use on hard ground. As far as we were aware, the twin-rig system has not previously been tried using rockhopper gear. The main aim of the exercise was to assess the commercial viability of operating such a system. The work carried out in this project was funded by MAFF as part of their 1987/88 Commission of Fisheries Research Projects, Code IAE16. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Evaluation of Mesh Measurement Methodologies for Fisheries Inspection and Research (MESH) FAIR-CT96-1452_TASK 2

In task two of the project each partner had to identify and describe problems with respect to mesh measurement procedures for scientific applications. A series of hearings was set up involving fisherment, net suppliers and the Inspectorate from all areas of England, Wales and Northern Ireland. Any problems with the measurement of mesh sizes in these sectors were discussed and noted. The procedures for ensuring adequate coverage of all sectors and areas are described. The points raised at each meeting are given in detail in Appendices I and II and condensed into points of commonality in the results section. A discussion of relevant points and conclusions is included.

Fishing Trials to Evaluate the Relative Selectivity and Efficiency of Different Netting Yards Used in the Construction of Static Nets Used in the Fisheries for Sole and Place in the Eastern English Channel

Trials were carried out in the spring, summer and winter months of 1989 to evaluate the performance of different set net types, materials and mesh sizes in the sole and place fisheries of the Eastern English Channel. The trials were carried out from Hastings on the 10 m 70 hp 'ST RICHARD'. The results showed how the many variables can interact to affect both selectivity of these nets and their efficiency. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Development of a Portable Measurement System for the Investigation of the Engine Power at Sea by Supervision Personnel

This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Improved Selectivity in Towed Gears - Sea Trials to Evaluate Selectivity of Separator Trawls used to catch Mised White Fish Species

The trials described were designed to evaluate the effectiveness and investigate the selectivity aspects of a separator trawl designed to separate cod and fleetfish from other demersal roundfish species. Using a twinning arrangement, two identifcal separator trawls were towed side by side. One net rigged with small mesh codends provided selectivity data when randomly compared against two test codends (100m & 140m). This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Safety Engineering and Equipment for Fishing Vessels under 20m - Results of Trials on Two Vessels 'Madalia' and 'Silverline'

Safety within the Fishing Industry is often a subject of debate and Seafish have addressed themselves to positively improve safety by both training and, as reported here, by demonstration on ‘Example Vessels’. The concept of ‘Example Vessels’ is to take existing vessels and then to work with the crews and owners to improve the level of safety and safety awareness. Two vessels were selected, the ‘Silver Line’ and the ‘Madalia’, both being inshore trawlers based at Bridlington. Following initial sea trips on the vessel various ideas have been implemented. Some are straight forward emergency measures, such as lifelines and a rescue net. Other ideas improve the layout of working conditions on the vessel. Novel designs have been evolved, such as a slip block to make the ‘blocking up’ operation safe on side trawlers and a four section fish washer was designed by the Skipper of the Silver Line. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

A Summary Report of the Development and Commercial Trials of Indirect Ice Chilled display Cabinets for keeping ooked products below 5 degrees centigrade

The law currently demands that cooked, smoked and cured products are kept at or below 5oC. In practice keeping these products between 0oC and 5oC is a difficult task. The nature of these products makes them unsuitable for direct icing and mechanical refrigeration will often cause freezing or drying. The majority of retailers struggle to keep products within the legal requirements with existing equipment and practices. There is a need for improved but simple, chill display equipment, especially for use in mobile vans where facilities are often limited. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Fishing Gear Handling Trials of a Twin Rig Trawling System using a 2 Warp Arrangement

There has been considerable increase in the number of European fishermen adopting multi-rig trawling techniques over the past few years. Danish and Norwegian fishermen in particular have adopted twin-trawl systems, using a three warp arrangement to exploit Nephrops, shrimp and white fish fisheries. The three warp system requires the vessel to be equipped with a three barrel winch arrangement. A specification not normally found on standard trawl winches. Seafish decided to evaluate a twin-rig trawling system utilising a two warp arrangement that could be adopted by most fishing vessels equipped for normal bottom trawling operations. A rig was designed and made up and fitted aboard a 12m stern trawler fishing for Nephrops from the North East coast port of North Shields. The trials described in this report present an evaluation of the twin trawl system with regard to the handling of the rig. The trawls used in these trials were two identical nets designed by Seafish. The nets are the same ones as were used in previous trials to evaluate a double-rig system using the trhree warp arrangement. (1297 - Double Rig and Separator Trawl trials held in the Firth of Forth. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Preliminary report on dover sole rearing at the hatchery of the WFA site at Hunterston (Jan 74-Feb 75)

This preliminary document reports the progress and problems of commissioning the new Dover sole hatchery, and running it for the first season. Despite delays outwith the Authority’s control nearly half the intended number of eggs was hatched. Survival to metamorphosis was considered to be normal (about 50%) but the weaning diets tried subsequently were not accepted and only 5% of the intended number of weaned fish was produced. Several shortcomings in the detail design and operation of the hatchery have been identified. Although the results of the first season are disappointing, six recommendations are made which, it is thought, should improve the chances of success in 1975. This report has been produced from a scanned original produced in February 1975 and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

A Comparison of One Tenth and Full Scale Measurements of the Drag and Geometry of a Pelagic Trawl

Current practices in modeling fishing gear have been investigated by comparing the shape and drag of a nylon pelagic trawl at one tenth scale with those of its full scale equivalents. The work has concluded that accurate modeling must take into account rope and twine elongation particularly in nylon nets and the change of drag coefficient with Reynolds Number and Froude Number is held constant. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

A Study of the Catch Composition, Effort Levels and Discard Rates in the English Set Net Fisheries during 1992/3

This report describes the results of a year's study of the static net fisheries of the NE, SE and SW coasts of England. Length/frequency distributions of the catch are described and percentage discard rates estimated. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Comparison of results in Turbot R & D to November 1978, with previous performance forecasts 1975 & 1977.

Early White Fish Authority experience of farming marine flatfish in sea cages was gained with plaice (1969 – 1973). From 1971 attention was increasingly turned to turbot, a species considered to be more attractive to farm commercially (Refs 1-3) and a number of small scale growth trials were performed with wild origin stock in order to obtain basic growth and husbandry data. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Report on landing facilities for commercial fishing vessels at Warsash on the River Hamble, Hampshire

The River Hamble Harbour authority has requested (through their Harbour Master) that the Sea Fish Industry Authority examine and report on landing facilities provided for a small fleet of local inshore fishing vessels, with particular regard to safe operation within the harour. the Harbour Authority is considering the construction of a fisherman's jetty at Warsash and its funding.

A study of the Sales/Marketing of Demersal Landings at UK Ports and the potential of Electronic Marketing Systems

This report examines existing practices and problems with the port sale and marketing of fresh demeral species in the UK and the need to make producers more responsive to market requirements. It examines UK industry structures, sales methods and the efficiency of the sales systems to reward good marketing practice (quality, supply, forward information, traceability etc). It compares them with systems in use elsewhere in Europe. The major constraints to the introduction of new systems are identified as opposition from vested commercial interests and problems in establishing the conditions necessary for their success, particularly, grading and weighing.

The Results of a Water and Effluent Study carried out at G W Latus Limited in September 1997

In the near future new environmental legislation will add greatly to the cost and difficulty of disposing of waste water, which will present a significant problem to the fish industry. Seafish has commissioned a number of water audits in fish processing companies, to look at water usage and effluent production, with a view to minimising both. This report is concerned with the audit of G. W. Latus Limited.

Trials using a square mesh panel as a means of improving selectivity in demersal pair trawls

This report covers the latest in a continuing series of sea trials examining different methods of fish capture in an attempt to improve and standardise the design and position of square mesh panels or windows within the trawl to reduce the level of discards whilst retaining acceptable proportions of marketable fish. On these trials a panel was tested in a demeral pair trawl. 'The practice of pair trawling is seen by many as most destructive in view of the high levels of discards often taken by this method of fishing. The objective of the trials was to determine if the use of a square mesh panel would reduce the discard problem.

A Report to the Fish Industry Forum on The Marine Stewardship Council and Related Topics

The work reported here was instigated by the Fish Forum at its meeting in July 1998. The terms of reference were: ‘ . . to produce a paper . . to cover the ownership, independence and functions of the MSC, a discussion of the demand for and problems associated with eco-labelling, and a commentary on the Nordic Council Proposal made at a recent meeting in Bremen.’

Evaluation of Mesh Measurement Methodologies for Fisheries Inspection and Research (MESH) FAIR-CT96-1452_TASK 1

In the first task of the project each partner has to review the mesh measurement procuedures used in his organisation. Seafish staff identified four types of gauges, the wedge gauge, the ICES gauges, the digimatic vernier gauge and the tape measure. The method of application of each method is described including the selection of meshes and force applied.

The Results of a Water and Effluent Study carried out at Richard Coulbeck Limited in August 1997

In the near future new environmental legislation will add greatly to the cost and difficulty of disposing of waste water, which will present a significant problem to the fish industry. seafish has commissioned a number of water audits in fish processing companies, to look at water usage and effluent production, with a view to minimising both.

Factors influencing the choice of any coastal marine fish cultivation site and recommended survey programme

Site evaluation is complex and lengthy and following an initial paper survey to reject those evidently untenable a detailed on-the-ground assessment is required. An indication of the more important parameters affecting site selection is give together with a survey programme lasting twelve months. This report has been produced from a scanned original produced in April 1975 and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Trials with pelagic pair trawl towed by Rose of Sharon/Kilravock from Newlyn using IDU net sounder

This report has been produced from a scanned original produced in May 1972 and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Flume Tank Testing of a Vee Type Otterboard (Harmonisation Trials) EEC Funded Otterboard Project TE1.214

This report describes Flume Tank trials on a vee type otterboard (otterboard No. S.1) which are part of the EEC funded Otterboard Project TE1.214.

Responses to clarification questions during the tender period for TD2022-001

This document includes the consolidation of the questions Seafish has been asked about tender TD2022-001, and the responses Seafish has given, so far.

UK-EU seafood trade under WTO conditions: trade tariffs, non-tariff measures, and additional enforcement for exporters of selected shellfish species

This note provides a summary of some of the trade changes shellfish exporters can expect to face when trading with the EU under WTO conditions. This note concerns the export of scallops, Nephrops, brown crab, and blue mussels.

Quality of trawled Nephrops using the coverless trawl

Key features measuring the quality of trawled Nephrops using the coverless trawl.

Crab and Lobster Live Holding System Part II (Water Pumps, Air Pumps and Pipework)

This data sheet is part of a new series forming a guide to the selection of equipment needed to successfully store and transport live crabs and lobsters.

FMIG Presentation 1. Fisheries Management Plans (FMPs).17 January 2023

Jon Davies and Annabel Stockwin, Defra, spoke about the legislative context and the Joint Fisheries Statement/UK Fisheries Act 2020. This file may not be suitable for users of assistive technology. If needed please request an accessible format.

Economics of Deep Water species Processing in Scotland

It was brought to the attention of the Scottish Fish Processing Action Group that most of the Deep Water Species fish landed in Scotland is not sold and prcoessed in Scotland but transported direct to markets and customers in France and other EU countries. The Economics Department of Seafish agreed to carry out a preliminary study of the situation to assess the business economics behind decisions to transport directly out of Scotland.

Assessment of the English Channel Squid Fishery (August 1976)

This year, besides repeating the 'Arctic Hunter' squid jigging exercies of 1975, the WFA are intending to conduct a series of jigging trials aboard an inshore fishing vessel. The Moray Firth, Solway Firth and Firth of Clyde have all been recommended as being the most prolific inshore regions for squid, but information received to date suggests that these fisheries may not materialise until the late autumn. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Mallaig Harbour Authority Port Planning Advice - February 1986

Mallaig has become in recent years a port predominantly landing shellfish and white fish although the facilities evolved in times past to suit the herring trade. He available land is restricted and the harbour Authority are anxious to redevelop the port-area for the mutual benefit of all users including the Ro-Ro ferry to Skye. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Water Flow Measurement Around A 1:4 Scale Model Vee Door

During full scale door trials with DAFS aboard FRV 'Clupea' angle of attack readings were found to be very high. Model trials conducted in the Flume Tank showed that the waterflow around the door would cause the angle of attack meter to read approximately 20'C too high. No position was found near to the door where the meter would give accurate angle of attack readings.

Ultra Violet Light Sterilization of Seawater with Reference to Shellfish Depuration Tanks

A comparison of different U.V. dose levels and water flow configurations and their ability to kill E. Coli This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Experimental Cultivation of Manila Clams in NW Scotland

This report covers details of the initial experiments on the feasability of cultivating the Manila clam, Tapes Semidecussatus Various methods of protecting seed were used at three different sites. At least 3-4 years is required to reach commercial size, but no significant reduction in yield were found at densities up to 800 clams/square metre. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Flume Tank Tests on Three Trawl Models (Model Full Scale Correlation)

This report describes Flume Tank trials carried out on three trawl models. The work was undertaken by the Gear Technology group of Seafish Technology under the MAFF R&D Commission 1991/92, Project Reference IAA16(MAFF), GT1 (Seafish). These trials form part of an ongoing project to correlate the performance of trawl models to their full scale counterpartas. The trawl system which is modelled has several comnponents each of which may behave differently when scaled from full scale to model, using the usual scaling rules: net, ground gear, bridles, doors, warps.

Water Usage and Effluent in the Fish Industry

With the privatisation of water authorities in the UK and the implications of the EC Directives on Waste Water, processors are facing considerable increases in overheads. This paper reviews the implications of the roles and makes tentative suggestions as to how costs can be checked. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Capital Grant Aid and Demand for New Vessels

IDU and DAFS have conducted an investigation, using the Fishing Vessel Design and Appraisal Model, into the value of building grants for Scottish demersal vessels from 50 to 80 feet. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish

Relationships between Fish Supplies and Processing Capacity in the UK

This paper analyses the pattern of fish supplies in relation to the existing processing capacity and its location and to the main areas of consumption. See Report 276. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Study Tour to Spain 16-21 May 1994

The report describes a visit to N. Spanish ports by a delegation from the UK fishing industry led and organised by Seafish. The objective of the visit was to gain a better understanding of the Spanish fishing industry and its problems. Meetings were held with the principal fishing representatives in the area. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

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