FRV Scotia 8/81

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Scotia (749S)
Cruise identifier8/81
Cruise period1981-08-12 — 1981-08-31
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
Objectives1. To carry out an acoustic and midwater trawling survey of the Orkney - Shetland area, as part of an ICES-coordinated survey of the herring stock in the northwestern North Sea.
2. Subsidiary objectives added shortly before and during the survey were:
a) a survey of the northern part of ICES Division VIa to search for mackerel shoals in the approaches to the Minch
b) a survey ofd Aberdeen where adult herring concentrations had been reported.
Chief scientistRoger S Bailey (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
ProjectHerring Stock by ICES
Coordinating bodyICES
Cruise reportFRV Scotia 8/81 cruise report sc08_81.pdf (0.12 MB) 
Ocean/sea areas 
GeneralNorth Sea
Norwegian Sea
North East Atlantic Ocean (limit 40W)
SpecificNorthwestern North Sea, Moray Firth, Orkney, Shetland, northwest Scotland
Track chartsFRV Scotia 8/81 cruise track — trk2701.html
Biology and fisheries 
Mammals and reptiles
Pelagic fishQuantity: number of hauls = 27
Description: ten with the Jackson Pelagic Trawl (PT 160) and seventeen with the larger Jackson Pelagic Trawl (PT 158). Distribution, biomass determination, population structures.
Acoustic reflection on marine organisms.