Cruise inventory

FRV Explorer 4/69

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier4/69
Cruise period1969-07-19 — 1969-08-01
StatusCompleted
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
PurposeResearch
Objectives1) To tag roundfish caught by the detachable codend technique
2) Trials of the new design of detachable codend
3) The haddock from 1 haul were used for a digestion experiment, and the stomachs preserved for subsequent laboratory analysis.
4) Live fish in good condition were collected for the aquarium during the cruise

Owing to an unsatisfactory forecast, sailing was delayed till the 01/08/1969. On the 26/07/1969 ''Explorer'' made an overnight call at Kirkwall, fishing resumed on the 27/07/1969.
Chief scientistRodney Jones (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 4/69 cruise report explorer4_69.pdf — access key 'C' (0.14 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificMoray Firth, 14 miles east of the Orkneys
Measurements 
Biology and fisheries 
Demersal fishQuantity: number of specimens = 878
Description: 738 haddock, 138 whiting, 2 cod. All fish tagged were raised to the surface using detachable codends, the hauls beign classified according to the time spent of the sea-bed and in being raised
TaggingsQuantity: number of specimens = 878
Description: 738 haddock, 138 whiting, 2 cod. All fish tagged were raised to the surface using detachable codends, the hauls beign classified according to the time spent of the sea-bed and in being raised