Cruise inventory

FRV Explorer 5/74

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier5/74
Cruise period1974-06-04 — 1974-07-04
StatusCompleted
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
PurposeFisheries
Objectives1) To survey the abundance and distribution of 0-group gadoids in midwater in the northern North Sea
2) To collect material for studies of the food of 0-group gadoids
3) To bring back live 0-group fish for use in the aquarium
4) To make observations on the organic environment
5) A large quantity of formalin preserved material was brought back to the Laboratory for analysis of stomach content
6) Some adult haddock whiting and gurnards were caught on hand lines and taken ashore for experimental work

A short call was made at Aberdeen on the 19/06/1974 when live fish were put ashore, the ship sailed again on the 20/06/1974. Catches/hour of cod, haddock, whiting and saithe were made
Chief scientistJohn R G Hislop (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 5/74 cruise report explorer5_74.pdf — access key 'C' (0.11 MB) 
Ocean/sea areas 
GeneralNorth Sea
Norwegian Sea
North East Atlantic Ocean (limit 40W)
SpecificW of the Orkneys, E of the Shetlands, Moray Firth, W of Fair Isle
Measurements 
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: 59
Description: Samples taken using the Gulf III. Chlorophyll monitored at selected stations
Particulate organic matter (inc POC, PON)Quantity: 20
Description: Organic carbon monitored at selected stations
PhytoplanktonQuantity: 31
Pelagic fishQuantity: number of hauls = 59
Description: 400-500 live group-0 cod, haddock and whiting were brought back to the Laboratory
Demersal fishQuantity: number of hauls = 59
Description: 400-500 live group-0 cod, haddock and whiting were brought back to the Laboratory
TaggingsQuantity: number of specimens = 412
Description: Whiting tagged by fishing with hand lines at night.
Exploratory fishing