WILKINS: ABUNDANCE OF WIDOW ROCKFISH 



Table 3.— Fishing gear used during the widow rockfish assessment project. 



Trawl type 



Vessels 



Doors and accessory gear 



Approximate 

 fishing dimensions 



Bottom trawl 

 Nor'eastern 



Midwater trawl 

 Alaska Diamond 



Norsenet 



No. 7 Gourock 

 rope wing 



No. 8 Gourock 

 rope wing 



Pat San Marie 1.5 x 2.1 m steel V-doors, 55 m triple 

 and Mary Lou dandylines, 32 mm mesh cod end 

 liner, roller gear 



Muir Milach Same as above but with 1.8 x 2.7 m 



and Chapman steel V-doors 2,500 lb 



Alaska Same as above but with 1.6 x 2.9 m 



aluminum V-doors 



Chapman 1.8 x 2.7 m steel V-doors, 55 m dou- 



ble dandylines with 4 sets of 5.5 m 

 bridles, 125 kg weights attached to the 

 bottom of each wingtip, 32 mm mesh cod 

 end liner 



Alaska Same as above but with 1.6 x 2.9 m 



aluminum V-doors 



Miller Freeman 6 m 2 Waco doors, 75 m double dandy- 

 lines, 46 mm mesh cod end covered with 

 a double braided 144 mm mesh bag 



Muir Milach 4.6 m 2 Suberkrub doors, 73.2 m dou- 



ble dandylines, 114 mm mesh cod end 

 (no liner) 



Ocean Leader 4.5 m 2 Suberkrub doors, 100 m dandy- 

 lines 200 kg weights attached to the 

 bottom of each wing, 32 mm mesh cod 

 end liner 



9.1 m headrope height, 13.4 

 m wingspread 



6.10 m headrope height, 16.7 

 m wingspread (Wathne 1 ) 



(not measured) 



11.0-14.6 m vertical opening 

 15.2 m wingspread 



Same as above 



18-20 m vertical opening 



18.3 m vertical opening, 

 wingspread not measured 



21.3 m vertical opening, 

 wingspread not measured 



'Wathne, R, Northwest and Alaska Fisheries Center, 2725 Montlake Blvd. E., Seattle, WA 98115, pers. commun. June 1981. 



Table 4.— Hydroacoustic equipment used during widow rockfish behavior and assessment surveys, 1980-82. 



Institute; NWAFC = Northwest and Alaska Fisheries Center. 



FRI = Fisheries Research 



'Reference to trade names does not imply endorsement by the National Marine Fisheries Service, NOAA. 



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