Cruise inventory

FRV Explorer 8/69

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier8/69
Cruise period1969-12-09 — 1969-12-22
StatusCompleted
Port of departureLeith, United Kingdom
Port of returnAberdeen, United Kingdom
PurposeFisheries
Objectives1) To conduct a mid-water trawling and echo-survey for blue whiting in the area between the Faroes and eastern Iceland
2) The Marconi echo-sounder was run continuously in water deeper than 100 fathoms
3) Samples of ovaries and testes from blue whiting were collected for histological examination

The ''netzonde winch'' broke down during a haul and the cable could not be retrieved by hand, so it was cut. Trawling continued with the Furuno Transducer.
Chief scientistRoger S Bailey (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 8/69 cruise report explorer8_69.pdf — access key 'C' (0.18 MB) 
Ocean/sea areas 
GeneralNorth Atlantic Ocean
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Description: T only
BathythermographQuantity: number of profiles = 27
Description: to a depth of 200-300 m. The surface thermograph was run continously throughout the cruise
Biology and fisheries 
Pelagic fishQuantity: number of hauls = 9
Description: Engel trawl. 6 hauls gave catches of blue whiting. A frozen sample has been preserved to determine a weight/length relationship. 100 stomachs were examined for food and diurnal feeding patterns.Catfish and lumpsuckers were also caught
Demersal fishQuantity: number of hauls = 9
Description: Engel trawl. 6 hauls gave catches of blue whiting. A frozen sample has been preserved to determine a weight/length relationship. 100 stomachs were examined for food and diurnal feeding patterns.Catfish and lumpsuckers were also caught