Reducing Seabed Contact While Trawling: A Semi-pelagic Trawl for the Newfoundland and Labrador Shrimp Fishery
Seabed impact from trawl fisheries is a hotly debated issue globally. This experiment explores a possible solution for negative seabed impacts in the Northern shrimp fishery by testing trawl doors designed to fly above the sea floor, minimizing contact. The researchers measure trawl geometry with a full array of hydro-acoustic sensors. Attempts were made to monitor door position in relation to the seabed, but researchers mostly relied on door shoe wear to determine if doors were on the bottom. Tests on the flying doors were mostly successful, with indications of both reduced groundfish and turbot bycatch and reduced seabed impacts with the flying trawl doors versus traditional trawl doors. Problems exist with the flying trawl door weight, and the research suggests a new lighter trawl door design be sourced prior to further sea trials.
30 Nov -0001
Fishing, hunting and trapping
Strategic Research Theme
Oceans, Fisheries and Aquaculture