. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 274 CALIFORNIA FISH AND GAME eighths-inch holes are punched in the trailing corners of the planing surface and the trailing edge of the center vane for attachment to the thimble gangs. A hole is also punched in the upper leading corner of the (niter vane for attachment to the bridles. The underside of the inner edge of the planing surface is fitted with a 14-inch steel rod of J-inch diameter which is used to contain 2 s 2 x 1-inch lea
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 274 CALIFORNIA FISH AND GAME eighths-inch holes are punched in the trailing corners of the planing surface and the trailing edge of the center vane for attachment to the thimble gangs. A hole is also punched in the upper leading corner of the (niter vane for attachment to the bridles. The underside of the inner edge of the planing surface is fitted with a 14-inch steel rod of J-inch diameter which is used to contain 2 s 2 x 1-inch lead blocks bored with ',-iiich diameter holes. These weights cause the depressors to plane at 45° angles (Figures 5 and 6). The depressors, which weigh about 31 lb. each, are shackled to the bottom thimble gangs as follow?^: (i) the inner edge of the planing surface to the bottom line, (ii) the trailing edge of the center vane to the rib line, and (iii) the outer edge of the planing surface to the side line (Figure C). The hydrofoils and depressors are attached to f-inch thimbles spliced into the ends of lUO-ft, ^-inch diameter wire rope bridles by a chain and Miller swivel assembly (Figures 3 and 6). Type 2, 3-J-inch, Miller swivels are used for the hydrofoils and depressors. The bridles and -J-inch diameter galvanized wire rope towing warps are joined with Type , n; •inch Miller swivels. OPERATION OF THE TRAWL The trawl is normally operated with a three-man crew. One man operates the boat, a second is responsible for the operation of the winch, and the third attends the net. Before setting out the net, the depressors and hydrofoils are arranged on the afterdeck for easy access (Figure. FIGURE 7. Afterdeck of research vessel showing arrangement of trawl and accessory equip- ment prior to setting out the net. Photograph by George Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and
Size: 1815px × 1377px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcaliforniadeptoffishandgame, bookauthorcaliforniafish
