. Commercial fisheries review. Fisheries; Fish trade. Fig. 1 - A 55,000-pound catch of sea herring. Thetwolargestcatches--60,000 and 55,000 pounds--were taken on 40-minute sets; these short sets were terminated to prevent over- loading the net. A total of 322,188 pounds of fish were caught: 307,627 pounds herring; 12,380 pounds mackerel, 1,380 pounds whiting, 134 pounds cod, and 667 pounds other species. Cruise 69-9 was broken from October 10 to 17 for shipyard installation of a transducer for the scientific sounder and to change sci- entific personnel. Fishing Gear Used A medium-sized. West G
. Commercial fisheries review. Fisheries; Fish trade. Fig. 1 - A 55,000-pound catch of sea herring. Thetwolargestcatches--60,000 and 55,000 pounds--were taken on 40-minute sets; these short sets were terminated to prevent over- loading the net. A total of 322,188 pounds of fish were caught: 307,627 pounds herring; 12,380 pounds mackerel, 1,380 pounds whiting, 134 pounds cod, and 667 pounds other species. Cruise 69-9 was broken from October 10 to 17 for shipyard installation of a transducer for the scientific sounder and to change sci- entific personnel. Fishing Gear Used A medium-sized. West German-type mid- water trawl was fished exclusively. This 4- seam (Herman Engel) net measures 1,400 meshes around the net at the front of the bel- lies. Mesh size is 8 inches (stretched mesh) in the wings and forward part of the bellies. The mesh tapers from 8 inches to l-^ inches in the lower part of the bellies, extension, and cod end. The length of the net (from tips of wing ends to extremity of cod end) is about 380 feet. A set of "beefed-up" 8-foot (height) by 4- foot (width) Suberkrub doors was used to spread this net. Although these doors were very stable while fishing, it is recommended that larger size (10' x 6') doors should be used. The larger doors should give greater horizontal opening to the net. Improved lifting devices on headrope with heavier chain on foot rope should increase net's vertical opening from 7 fathoms gen- erally experienced during cruise to perhaps 10 fathoms. With higher and wider opening, larger catches could be made in less time. This would be feasible only if straining the extra amount of water did not increase the net's dragbeyond vessel's towing capabilities. Fishing Procedure An acoustical search was conducted to find good fish traces before the net was set. During this cruise, the productive areas located were fished much more intensively than during earlier cruises. Fishing was broken off and scouting begun only when good fish ta
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