. Commercial fisheries review. Fisheries; Fish trade. 55 Lightweight Pots on Longline Since at least 1965, Japanese fishermen have experimented with pot fishing for king and tanner crab in the Bering Sea. Large king crab pots, patterned on models, have proved unacceptable thus far. Highly successful, however, are lightweight pots for tanner crab fished on a longline. They are designed to take tanner crab and are selec- tive of that species. Basic design resembles a top-entry beehive shape. Framework is -- inch black iron rod, except the bottom frame of 2-inch stock wrapped with rope to re
. Commercial fisheries review. Fisheries; Fish trade. 55 Lightweight Pots on Longline Since at least 1965, Japanese fishermen have experimented with pot fishing for king and tanner crab in the Bering Sea. Large king crab pots, patterned on models, have proved unacceptable thus far. Highly successful, however, are lightweight pots for tanner crab fished on a longline. They are designed to take tanner crab and are selec- tive of that species. Basic design resembles a top-entry beehive shape. Framework is -- inch black iron rod, except the bottom frame of 2-inch stock wrapped with rope to reduce chafing. The circular base is 45 inches in diameter and the circular top 28 inches. Fig. 4 - Tanaer crab jx>t used by Japanese fleets in Bering Sea. Attached to anchored ground lines, about 1 mile long, these pots are highly selective for tanner crab. across. Top, middle, and bottom frames are welded to straight rods to form a structure 22 inches high. This framework is covered with 6-inch, stretched measure, synthetic fiber web. Some variation in mesh size and frame size occurs. The web bottom of the pot opens for dumping crab. Then it is easily closed by puckering with a drawstring ar- rangement that secures by means of a hook and stout rubber band. The entry tunnel, hanging vertically from the web top, is a sheet of white plastic sewn into a tunnel 20 inches wide; this tapers to 14 inches diameter and 8 inches long. The complete pot weighs about 40 pounds. Fishing The Pots Each pot is rigged with bridle and a 4- fathom gangion ending in an eye splice. Bridles usually are knotted to the top frame in two places, so the pot hangs vertically. Some variation on this rigging incorporates a third piece in the bridle secured midway on the side of the pot. Most lines are syn- thetic fiber. Duetoease of handling, pots can be stacked on deck in a ready-to-fish condition. Com- pletely releasing the bottom drawstring, how- ever, permits such efficient nesting that a stack of 30 p
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