1. To use the remote controlled towed vehicle to observe herding in the sweep area of the trawl.
2. To examine the role of bioluminescence in making nets visible.
3. To identify non-reaction using a remotely fired flash camera.
4. One day to be devoted to Central Office of Information to film the remote vehicle technique.
''Explorer'' sailed to Kirkwell for repairs on the Decca navigator. It returned again as the top rotor of the vehicle was damaged whilst trawling, and later to land Dr Stewart. A half-landing took place from the 13/07/1981 till the 15/07/1981 in Kirkwell.
Clem S Wardle (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
North Sea North East Atlantic Ocean (limit 40W)
Orkney, Sul Bank, Copinsay, Fair Isle, Sule Skerry, Noss Head, Smith Bank
Biology and fisheries
Description: Gear trials.
Other biological/fisheries measurement
Description: herding in the sweep area of a trawl observed using RCTV.