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Market Insight Factsheet: Tuna - March 2024

This Market Insight factsheet provides a full picture of tuna in the retail, foodservice and trade markets.

Exploratory Voyage by DET 'Swanella'

In the Autumn of 1973 the diesel electric stern trawler SWANELLA was chartered on behalf of the Ministry of Agriculture, Fisheries and Food for an exploratory fishing voyage in deep water to the West and North West of the British Isles. The areas in question have not hitherto been exploited by commercial fishing vessels but in the twelve months prior to SWANELLA’s voyage they had been surveyed in part by fishery Research Vessel CIROLANA. 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.

Blue Whiting Processing Trials Stornaway 1977

The almost universal adoption of 200 mile fishing limits has resulted, to a large extent, in the exclusion of our distant water fishing fleet from their usual fishing grounds, and consequently in a shortage of traditionally acceptable fish such as cod and haddock. This shortage has caused a predictable series of price increases, and shown a need to exploit non-traditional species such as blue whiting, which can be caught in large quantities around our own coast and within the EEC controlled fishing areas. Blue Whiting (Micromesistius poutassau) is a small white fish, a member of the cod family, which congregates in large quantities to the north west of the UK during its springtime spawning season. Throughout the remainder of the year the blue whiting stock disperses throughout the north Atlantic. Estimates of the stock vary between 8 and 12 million tonnes, of which 2 million tonnes could be harvested annually without damaging the stock. Despite increasing fishing activity by foreign vessels, fishing mainly for fishmeal, the stock still remains virtually unexploited. 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.

Investigations on Non-Returnable Box Properties

This report details the experimental results of thermal and handling trials carried out on the present range of non-returnable wet fillet box materials used in the UK. A general survey of the packaging distributions environment is also 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

A Survey of Current Research on the Selectivity of Fishing Gear

The selectivity of fishing gears has become an important issue in recent years as a consequence of greater awareness of the necessity to conserve fish stocks, and to take only those species and sizes of commercial value. This report summarises current research work in this field and the ‘state of the art’ of different selectivity investigations. Research is being carried out by several international research organisations and among the leading authorities are the DAFS Aberdeen Laboratory and MAFF’s Lowestoft Laboratory. 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.

On-Board Fuel Flowmeter Systems for Use on Fishing Vessels

The report describes a typical fuel flowmeter system and lists the practical and technical requirements of the system. Use of a flow meter for trials purposes is described and the techno-economic benefits discussed. A list of known manufacturers is provided. 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 Comparison of Continuous and Discontinuous Feeding on the Growth of Hatchery Reared Spat of the Pacific Oyster (Crassostrea gigas)

Six series of trials were held to investigate the effect on growth rate and survival of pacific oyster spat over a five week period when fed under different regimes. It was concluded that there was no effect on mortality but a significant (30%), improvement in growth rate for the same total food consumption, or reduction in food consumption for the same growth. This could be worth £2,500 per annum to a commercial hatchery. 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.

Investigation into Potential Fuel Savings by Using Auxiliary Sail on Existing Fishing Vessels

The rising cost of fuel which has amounted to almost 700% in the last decade has resulted in a revival of interest in sail power as a means of fishing boat propulsion. This study examines the theory of sail power and its relevance to the modern fishing vessel especially the trawler or trawler/seiner of under 24m in length. The high standards of stability now required for fishing vessels coupled with the hull form developments which have taken place since the advent of the diesel engine preclude the application of sail power to existing vessels. The study develops the formulae for the sail area which can be carried by the modern vessel whilst still remaining within the IMCO criteria and this is so negligible to be not worth the structural changes and expense. 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.

Business Study - N.E. Coast

The report presents a regional objective study of all aspects of the fishing industry within the NE coast region, from Whitby to Eyemouth (inclusive). 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

Exploratory Voyage for Blue Whiting - 'Arctic Privateer'

This report describes a voyage made in March-April 1975 on the stern freezer trawler ARTIC PRIVATEER to catch blue whiting to the north-west of the British Isles. The voyage was a joint venture undertaken by the Ministry of Agriculture, Fisheries and Food, the Department of Agriculture and Fisheries for Scotland the White Fish Authority. 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.

Design Characteristics of Middle Water Trawlers: Study of Machinery Requirements

This is the first in a series of reports on the Authority's study of design requirements for future middle water trawlers. This report describes the studies made and conclusions reached on the current and future vessels in the class.

Mobile Fish Retailing

With the number of mobile retailers increasing during the past decade, this project involving the operation of such a unit, was aimed at defining the parameters of van design in relation to different types of market served. This report gives the information obtained, of the necessary and desirable features in the specification of a van designed to offer good quality fish for sale at the right temperature and in hygienic conditions. The sales information gained from the different sites used was less extensive than hoped, mainly due to the need to avoid situations in which the trials might inadvertently compete with the existing trade. 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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