Documents | Seafish

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.’

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.

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