Cruise inventory

FRV Explorer 1/76

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier1/76
Cruise period1976-01-05 — 1976-01-29
StatusCompleted
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
PurposeResearch
Objectives1) To conduct instrumented engineering trials on a 1000 HP Delagic trawl to determine the effect of changes in warp length, floatation and weighting on trawl configuration when in contact with the seabed

2) To conduct instrumented engineering trials on a 600 HP version of the Delagic trawl to determine the most appropriate rigging and in particular otterboard size for this trawl

3) To conduct limited instrumented trials on a pelagic trawl in deep water to establish the optimum techniques for controlling warp length and towing speed to obtain given vertical displacements of the net. Consideration will be given to the known behaviour during the catching process of deep water species such as Blue Whiting

4) To test the deployment and recovery of a rig for the measurement of sedimentation rates at various points in the water column
Chief scientistD N MacLennan (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory), Richard S T Ferro (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 1/76 cruise report explorer1_76.pdf — access key 'C' (0.14 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
North East Atlantic Ocean (limit 40W)
SpecificMoray Firth, Fraserburgh, Shetland, Fetlar
Measurements 
Biology and fisheries 
Gear researchDescription: 11 tows Delagic gears were used for sustained periods in contact with the sea bed. 1000 HP gear was also tested