FRV Clupea Extra/81

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifierExtra/81
Cruise period1981-01-21 — 1981-01-30
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
Objectives1. To test and measure the performance of the vertical sampling trawl.
2. To conduct sea trials of the microprocessor based warp tension meters.
3. To test new developments in spreadmeter design.
4. To assess the performance of modified spreadmeters used to measure headline height.
5. To test net mounting and surface speed logs.
6. To carry out tests on other ancillary instrumentation as required
7. To calibrate plankton sampler flowmeters.
Chief scientistAngus MacDonald (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Clupea Extra/81 cruise report cl21_30jan_81.pdf (0.03 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificE. Coast Scotland
Biology and fisheries 
Gear researchDescription: Trials of fishing gear and plankton samplers.