FRV Explorer 4B/78

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier4B/78
Cruise period1978-04-03 — 1978-04-11
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
Objectives1) To investigate the engineering performance of a high lift, 3 bridle trawl, using underwater TV equiptment using Laboratory divers.
2) To compare the efficiency and performance of the Polyvalent and standard flat boards when fished with the four panel trawl, vinge trawl and 3 bridle trawl

The performance of the trawl boards and their effect on the geometry of the gear was compared.
Chief scientistA Corrigall (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 4B/78 cruise report explorer4_78.pdf (0.07 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificShetland, Balta area, Clythe Ness
Biology and fisheries 
Gear researchQuantity: number of hauls = 13
Description: Instrumented. 8 with 3 bridle and the remaining hauls with the 4 panel trawl using the polyvalent doors only