. Commercial fisheries review. Fisheries; Fish trade. November 1953 COMMERCIAL FISHERIES REVIEW 19 Whether or not such efforts will be made probably depends primarily on economic fac- tors. The low oil yield of last winter, combined with the depressed state of the fish- oil market, probably resulted in financial losses for those companies concerned. It is doubtful that further commercial winter explorations can be anticipated until there is a substantial improvement in the market for fishery byproducts. APPENDIX A - ALASKA HERRING-FISHING GEAR AND ITS OPERATION MODIFICATIONS AND GEAR ON "
. Commercial fisheries review. Fisheries; Fish trade. November 1953 COMMERCIAL FISHERIES REVIEW 19 Whether or not such efforts will be made probably depends primarily on economic fac- tors. The low oil yield of last winter, combined with the depressed state of the fish- oil market, probably resulted in financial losses for those companies concerned. It is doubtful that further commercial winter explorations can be anticipated until there is a substantial improvement in the market for fishery byproducts. APPENDIX A - ALASKA HERRING-FISHING GEAR AND ITS OPERATION MODIFICATIONS AND GEAR ON "JOHN N, COBB:" In order to adapt the John N. Cobb for work as a purse seiner, certain modifications were miade to the afterdeck (figure 10). A net bin was constructed on the afterdeck and a seine chute was constructed across the stern to allow the seine to slide freely when maMng a set. A skiff guide was built over the gunwale on the stern to facilitate lavmch- ing the seine skiff. On the starboard gunwale, a seine davit was installed opposite the winch, and a drum, for the hauling line was mounted on the aftendof the deckhouse. A standard tapered end-type Alaska herring purse seine of 200 fathoms length was used. Details of this seine are shown in figures 12, 13, and FIG. 18 - SPRING SHACKLE USED FOR ATTACHING BAG-END HAULING LINE AND PURSE LINE TO BAG END OF SEINE. The use of rectangular-shaped nets with breast lines, described in other publica- tions (Scofield 1951 and Murray 1952), has been discontinued by many of the Alaska herring seiners as they believe that any seine takes a tapered-end shape when being set and hauled. This taper is accomplished by gathering all the webbing to a piece of 5- inch web at the wing end and to a section of woven rope webbing at the fish-bag end. The webbing is hung to the cork line and lead line as shown in figures 13 and 14. TYPICAL SEINING OPERATION equipment used aboard the John N The foregoing describes the herring seining Cobb
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