. Commercial fisheries review. Fisheries; Fish trade. 29 'Delaware's' Gloucester Trawl Catches Exceed Commercial Catches The primary objective of the BCF Dela- ware's August cruise was to measure open- ings and other factors in 3 models of the Gloucester trawl under actual fishing condi- tions in 35 to 100 fathoms. (Cruise 68-7, Aug, 13-22.) A secondary objective was to take similar data on a #36 trawl for BCF's Biological Laboratory at Woods Hole, Mass. Twenty tows of various duration were made in the Bay of Fundy area, mostly where New England based trawlers were fishing. The researchers use
. Commercial fisheries review. Fisheries; Fish trade. 29 'Delaware's' Gloucester Trawl Catches Exceed Commercial Catches The primary objective of the BCF Dela- ware's August cruise was to measure open- ings and other factors in 3 models of the Gloucester trawl under actual fishing condi- tions in 35 to 100 fathoms. (Cruise 68-7, Aug, 13-22.) A secondary objective was to take similar data on a #36 trawl for BCF's Biological Laboratory at Woods Hole, Mass. Twenty tows of various duration were made in the Bay of Fundy area, mostly where New England based trawlers were fishing. The researchers used 3 sizes of the BCF Glouces - ter trawl developed at the Exploratory Fish- ing and Gear Research Base, Gloucester, Mass, One tow was made off Cape Ann, Mass., withamanila #36 trawl. The Delaware's catches were equal or superior to the catches of the commercial vessels. Gloucester Trawls The 3 sizes of Gloucester trawls fished and measured were: (1) an 88-foot headrope, 100-foot footrope t r aw 1 with 4i-inch mesh throughout the net, (2) an 86-foot headrope, 106-foot footrope trawl with 6-inch mesh in wings and square and 42-inch mesh in re- mainder of the trawl, and (3) a 106-foot head- rope, 12B-foot f o o t r op e trawl with 6-inch mesh in wings and square and 4-2-inch mesh in remainder of the trawl. Trawl number 3 was made up and measured in anticipation of its use aboard the new stern trawler research vessel "Delaware ; All these trawls used the same set of rubber roller gear. This gear was made up of discs and 18-inch wing roll- ers in the wings and 22-inch rollers in the bosom (see illustration). Results Trawl net factors in the 4 trawls used were: Trawl Net Measurements Under Tow 1 Net A B C D Footrope 100' 106' 128' #36 trawl Wing End 12' 13' 6' Headrope Height 17' 16' 27' 6> Wing Spread 50' 48' 40' 41' Notes: (1) Figures shown are averages from all data collected on each trawl. (2) Data collected on Net B were influenced by numerous changes to trawl an
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