Cruise inventory

FRV Explorer 10/77

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier10/77
Cruise period1977-11-08 — 1977-11-29
StatusCompleted
Port of departureGreenock, United Kingdom
PurposeResearch
Objectives1) To undertake a North Sea pre-recruit demersal fish and environmental survey
2) To work the JONSIS line
3) Samples of T.esmarkii, M.poutassou, herring, sprat, mackerel, and Pandalus were deep frozen for further examination at the laboratory. All squid were deep frozen to supply food for the aqaurium

A seaman was disembarked in Scrabaster. ''Explorer'' anchored in Shapinsay from the 14/11/1977 till the 15/11/1977. The ship docked for a mid-cruise break on the 17/11/1977 in Lerwick will the 19/11/1977. Due to bad weather conditions, it was not possible to undertake the JONSIS line.
Chief scientistArthur S Jermyn (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 10/77 cruise report explorer10_77.pdf — access key 'C' (1.50 MB) 
Ocean/sea areas 
GeneralNorth Sea
North East Atlantic Ocean (limit 40W)
SpecificPentland Firth, off Orkney, Moray Firth, Sumburgh/Fair Isle, Forties oil field, Fladen area
Track chartsFRV Explorer 10/77 cruise track — trk1976.html
Measurements 
Physical oceanography 
Water bottle stationsQuantity: number of stations = 2
Chemical oceanography 
PhosphateQuantity: 2
NitrateQuantity: 2
SilicateQuantity: 2
Biology and fisheries 
ZooplanktonQuantity: 2
Description: using a high speed Loch Ewe net
Pelagic fishQuantity: number of stations = 23
Description: monitoring & surveillance of demersal fish. A 48ft Granton trawl and small mesh cover was used. A cod-end mesh size of 80 mm was used for all hauls. Whiting, haddock, cod, industrial species, flatfish, long rough dabs, common dabs, lemon sole, plaice, megrim, witch, brill, turbot were caught. Herring, sprats and other species were also caught.
Demersal fishQuantity: number of stations = 23
Description: monitoring & surveillance of demersal fish. A 48ft Granton trawl and small mesh cover was used. A cod-end mesh size of 80 mm was used for all hauls. Whiting, haddock, cod, industrial species, flatfish, long rough dabs, common dabs, lemon sole, plaice, megrim, witch, brill, turbot were caught. Herring, sprats and other species were also caught.
Other biological/fisheries measurementQuantity: number of samples = 24
Description: amphibians. Microscopic examination of haddock showed 131 were infected with Ichthyohonus hoferi. Serum samples were taken from 365 haddock and all plaice. Ouchterlony agar gel diffusion tests were carried out on 335 of them. Samples of serum were frozen for further analysis. Serum from 5 plaice, 3 brill, 50 haddock, 4 cod and 1 turbot was obtained with a note of fish maturity for analysis