Cruise inventory

FRV Mara 1/78

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Mara (74MR)
Cruise identifier1/78
Cruise period1978-01-23 — 1978-02-10
StatusCompleted
Port of departureBuckie, United Kingdom
Port of returnBuckie, United Kingdom
Objectives1. To find out if the 100-200hp 'Gourock' herring trawl can be improved for sprat trawling.
2. To compare the 100hp Delagic gear (especially adapted for sprat fishing) with the Gourock as a sprat sampling net.
3. The experiments on selectivity will involve:-
(a) approaching groups of fish with the two gear at a variety of speeds.
(b) testing the selective properties of 11, 16, 20 and 33mm cod-end mesh sizes.
(c) observing all parts of the gear using the towed vehicle and television.
Chief scientistS T Ronald de Silva (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Mara 1/78 cruise report mara1_78.pdf — access key 'C' (0.13 MB) 
Ocean/sea areas 
GeneralNorth Sea
Measurements 
Biology and fisheries 
Acoustic reflection on marine organisms.
Gear researchDescription: comparing the performance of a 100 HP Delagic and a Modified Gourock trawl.