. Commercial fisheries review. Fisheries; Fish trade. 31 powered with an automobile transmission and a chain drive (fig. 3), was used to haul and store the mainline. Bait consisted principally of frozen jack mackerel, Trachurus sym- Fig. 3 - Powered reel for the mainline used by Blue Belle. To set the longline, the vessel was steered downwind at about knots and the line al- lowed to pay out freely. One man baited the hooks and threw them overboard, while pass- ing the snap ends to a second man who at- tached the dropper lines to the mainline. A third man handled the floats and f
. Commercial fisheries review. Fisheries; Fish trade. 31 powered with an automobile transmission and a chain drive (fig. 3), was used to haul and store the mainline. Bait consisted principally of frozen jack mackerel, Trachurus sym- Fig. 3 - Powered reel for the mainline used by Blue Belle. To set the longline, the vessel was steered downwind at about knots and the line al- lowed to pay out freely. One man baited the hooks and threw them overboard, while pass- ing the snap ends to a second man who at- tached the dropper lines to the mainline. A third man handled the floats and flags, while the captain kept the ship on course. During retrieval of the line, one man con- trolled the speed of the reel and unsnapped the dropper lines as they came aboard, two men coiled the dropper lines in the storage boxes and handled sharks, while the captain maneuvered the ship. All hands aided in land- ing swordfish. All sets were made just before sunset, and hauling was started at dawn. Ten sets (total of 4,208 hooks) were made in international waters offshore from central Baja California, near the 1,000-fathom contour. Surface-water temperatures in this to ° were determined from a bathythermograph cast made before each set. The Catch A total of 33 swordfish were caught (figs. 4 and 5), of which one was lost due to exten- sive damage by sharks. The catch rate of the entire trip was swordfish per 100 hooks fished. Every set produced at least one swordfish; the best day's catch was nine fish on a 392-hook set. The total dressed weight of the landed swordfish was about tons (average weight 156 pounds). The fork length (tip of lower bill to fork) of the fish ranged from 36 to 109 inches (dressed weights 20- 360 pounds). Gonads of 29 fish collected by the fishermen indicated that 9 3 percent of the fish were females. None of the ovaries were in an advanced stage of development. Other fish in the catch included one striped marlin (Tetrapturus au
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