Cruise inventory

FRV Explorer 11/78

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier11/78
Cruise period1978-10-18 — 1978-11-07
StatusCompleted
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
PurposeResearch
Objectives1) To undertake a North Sea pre-recruit demersal fish survey
2) A large number of cod, haddock, whiting, saithe and plaice were deep frozen and returned to the Laboratory in order to investigate their round weight/gutted weight relationship
3) Samples of whiting, mackerel, and squid from various stations were deep-frozen for subsequent examination for larval nemtodes

''Explorer'' docked in Lerwick on the 27/10/1978 sailing again on the 29/10/1978
SW gales forced the ship to anchor in Inganess Bay on the 01/11/1978
Chief scientistAndrew W Newton (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 11/78 cruise report explorer11_78.pdf — access key 'C' (1.72 MB) 
Ocean/sea areas 
GeneralNorth Sea
Norwegian Sea
North East Atlantic Ocean (limit 40W)
SpecificMoray Firth, Off Aberdeenshire coast, N of Shetlands, Norwegian coast, Ling Bank area, Viking, Forties, Buchan, Orkneys
Track chartsFRV Explorer 11/78 cruise track — explorer11_78track.pdf (00 MB)  FRV Explorer 11/78 cruise track — trk2261.html
Measurements 
Contamination 
Trace metalsQuantity: 3
Biology and fisheries 
Demersal fishQuantity: number of stations = 55
Description: pathology,population,monitoring. Haddock and whiting caught. 2657 samples of kidney were taken from measured haddock from all stations, and were examined microscopically for Ichthyophonus infection. 35 Whiting, 12 cod, 79 were similarly sampled with additional samples of these species and pout preserved or frozen for future laboratory examination. Gel diffusion antibody tests were carried out on the blood serum of 75 haddock using fungal antigen from both plaice and haddock. Whiting were gutted and the viscera and flesh of individual fish were preserved separately by deep freezing for later analysis for post-mortem migration of larvae from the viscera to the flesh.