FRV Explorer 5/71

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier5/71
Cruise period1971-08-20 — 1971-09-06
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
Objectives1) Faroe-Shetland hydrographic lines
2) Fish-environmenatl survey of Faroe Bank and Faroe Plateau
3) Ornithological studies for Aberdeen University (cancelled)
4) Guff III samples were taken for dry weight determination only; no species analysis was attempted
5) Stomach samples were collected from all species obtained from trawling, from a wide size range of each species and on an area basis.
6) A record of the amount of dead shells was made and a representative sample was kept for Dr J Wilson of the National Institute of Oceanography

Objective 3 was cancelled because Dr W R P Bourne was detained due to pressure from other work. A brief visit was made to Thorshavn where packages of deep-frozen sea-birds were picked up for Dr Bourne on the 27/08/1971. Owing to further strong winds, only 3 of the 6 trawl stations on Faroe Bank were worked
Chief scientistRobert Johnston (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 5/71 cruise report explorer5_71.pdf (0.13 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificFladen area, Fair Isle, Munken Rock, West Bay
Physical oceanography 
Surface measurements underway (T,S)Description: thermosalinograph at 3 m intermittent
Water bottle stationsQuantity: number of stations = 57
Chemical oceanography 
OxygenQuantity: 6
PhosphateQuantity: 6
NitrateQuantity: 4
SilicateQuantity: 4
Other contaminant measurementsQuantity: 6
Description: chemical pollution
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: 57
ZooplanktonQuantity: 57
Pelagic fishQuantity: number of hauls = 37
Demersal fishQuantity: number of hauls = 37
Description: Main species caught were haddock, cod and saithe
Gear researchDescription: instrument development
Other biological/fisheries measurementDescription: deep scattering layers
Geology and geophysics 
Other geological/geophysical measurementsQuantity: 37
Description: physical analysis of sediments