poles from dipping into the waves and breaking in rough seas. A guy line attached 

 to the center of each pole and run through a block in the shrouds allowed the 

 poles to be raised and lowered to the desired angle or lashed upright against 

 the after-shroud when not in use. Vertical rigidity was maintained with an ad- 

 justable stay run through a block attached near the butt of the pole to the guard 

 rail, and a forestay was run from between the attachment of the center and inboard 

 lines to the rail forward. 



/ 



/ 



FIGURE 4 - TROLL-CAUGHT ALBACORE ARE PULLED AND LANDED BY HAND. THIS METHOD OF 

 FISHING ACCOUNTS FOR NEARLY ALL THE TUNA CAUGHT OFF THE OREGON^ WASHINGTON AND 

 BRITISH COLUMBIA COASTS. 



Paired galvanized steel springs, 12-inches long and ij inches in diam- 

 eter set in a V-shape, were used between the poles and tag lines as shock absorb- 

 ers. The tag lines were of 6-thread manila and of sufficient length to reach to 

 the after-side rails. Main lines of hemp or cotton. No, 96 or 120, and from 15 

 fathoms in length on the inboard lines to 25 fathoms on the outboard, were joined 

 to the tag lines by tapered rubber bumpers ll-inches long and 5/8 inches in di- 

 ameter at the ends. These main lines connected to 5 fathoms of No. 360 braided 

 linen or nylon leader with a brass swivel. Number 16 stainless steel wire, 

 4-feet long, was tied directly to the shank of the double hook, and after being 

 threaded through the jig, was joined to the nylon or linen leacier by a snap 

 swivel. The two stem lines were 15 fathoms and hung from the after-comer 

 supports of the bait tank canopy. This gear was fished on the surface without 

 weights and was hauled by hand. 



Trolling methods and lure effectiveness 



Trolling lines were towed during all daylight running hours when in 

 the offshore waters, even vrtiile the Cobb was running full speed for a destination. 

 Most of the time was spent trolling at approximately six knots, which was found 

 to be the most productive speed. A few albacore were taken while fishing at full 

 speed, and some also at speeds less than six knots. Fish struck in all states of 

 sea from calm to rough, and although some of the better catches were made while 



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