FRV Explorer 9/80

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier9/80
Cruise period1980-08-07 — 1980-08-25
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
Objectives1) To undertake a North Sea Pre-recruit Demersal Fish Survey
2) To collect stomachs of commercially important species as recommended by the working group on multispecies assessment model testing
3) To collect information on the age and length composition of several less commercially important species
4) Otoliths were collected from common dab, long rough dab, gurnard and witch.
5) Samples of haddock, mackerel, and squid were deep frozen and caeca of all otolithed herring were preserved in alcohol
6) Live dogfish and skate were brought back for use in the aquarium

A mid-cruise break took place in Kirkwell on the 17/08/1980 till the 19/08/1980. NW gales forced the ship to remain at anchor in Inganess Bay until the 22/08/1980
Chief scientistAlexander P Robb (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 9/80 cruise report explorer9_80.pdf (0.59 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificNorth Sea, Moray Firth, Turbot Bank
Track chartsFRV Explorer 9/80 cruise track — explorer9_80track.pdf (0.52 MB) 
Biology and fisheries 
Demersal fishQuantity: number of hauls = 55
Description: population,pathology studies. Stomachs examined and samples preserved from 484 cod, 1920 whiting, 717 Norway pout, 103 saithe, 78 mackerel