NE Atlantic Dutch pelagic Marine mammals Independent 1989 and medium Smallest trawler = The average annual catch = (Couperus, (Western trawl fisheries observer 1994 70 m long. 420,000 metric tons 1997) Atlantic Europe) programme 11 to 13 freezer dolphins Four largest 71 bycatch incidents involving 312 See text for NE 1992-94 Fishing areas trawlers + an (78%) trawlers = 115–120 dolphins. Atlantic for covering were in the additional 9 m long, with a more long-finned pilot bycatch rate of 0.076 animals per about 5% of North Sea and vessels 3,000–5,000 tonne information. whale (12%) tow, or 0.01 animals per hour of annual effort around the storage capacity The duration of towing. common dolphin British Isles record book and engines of fishing trips (7%) along the data collected 8,000–10,000 varied between continental from 1989 to horsepower. bottlenose dolphin 2.5 and 5 shelf. 1991 (1.5%) weeks, pelagic trawl depending on vertical opening of white-beaked catch rates. between 30 m and dolphin (1.5%) 60 m range of horizontal spread of wings = 80–120 m. front net mesh size < 30 m, diminishing to 4 cm at the trawl towed at varying depths depending on the target species, and the duration varied from 5 min to > 10 hours
NE Atlantic (Western Europe) Fishing areas were in the North Sea and around the British Isles along the continental shelf. Dutch pelagic trawl fisheries 11 to 13 freezer trawlers + an additional 9 vessels The duration of fishing trips varied between 2.5 and 5 weeks, depending on catch rates. Marine mammals Atlantic dolphins (78%) long-finned pilot whale (12%) common dolphin (7%) bottlenose dolphin (1.5%) white-beaked dolphin (1.5%) Independent observer programme 1992-94 covering about 5% of annual effort record book data collected from 1989 to 1991 1989 and 1994 medium Smallest trawler = 70 m long. Four largest trawlers = 115–120 m long, with a 3,000–5,000 tonne storage capacity and engines of 8,000–10,000 horsepower. pelagic trawl vertical opening of between 30 m and 60 m range of horizontal spread of wings = 80–120 m. front net mesh size < 30 m, diminishing to 4 cm at the trawl towed at varying depths depending on the target species, and the duration varied from 5 min to > 10 hours The average annual catch = 420,000 metric tons 71 bycatch incidents involving 312 dolphins. bycatch rate of 0.076 animals per tow, or 0.01 animals per hour of towing. (Couperus, 1997) See text for NE Atlantic for more information.
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