Operations in 19!;0 



In 19U0j two vessels were used in offshore fishing; the Western 

 Flyer , which had been operated in 1939, and the Adventure of 101 gross tons, 

 7ko6 feet registered laigth, 20. U feet breadth and 9o8 feet depth. 



The gear used en each vessel was identical^ beinp; as follows: a 

 center section of 3$0 fathoms of linen gill net, 5-1/2 inches stretched 

 measure, 91 meshes deepj together with U^O fathoms of No. 15 thread cotton 

 netting, 5 inches stretched raeasure, 100 meshes deep, on either end, 

 making one net 1,2^0 fathoms long and 500 inches stretched raeasure deep» 

 These nets were used as gill nets and were laid out in a stright line. 

 The use of cotton webbing at either end of the linen webbing was of no 

 particular merit other than to utilize webbing on hand. The nets un- 

 doubtedly would have been more efficient if imde entirely of linen thread. 

 Identical fishing gear was used on each vessel in order that the data ob- 

 tained by each could be compared directly if the vessels operated in 

 different localities. 



Operaticns were carried on in four distinct areas, i.e., from the 

 Islands of Four Mountains to the Pribilofs, from Cape Mordvinof to the 

 Pribilofs, from the Pribilofs to Nunivak Island, and from Cape Seniavin 

 to Cape Newenham (see figure 5). Four sets were made along the section 

 from the Islands of Four Mountains to the Pribilof Islands, the data for 

 which are presented in table 6. 



Table 6o Gill net catches along the section line extending frcm the 



Islands of Four Mountains to the Pribilof Islands, during 19l;0, 



It is probable that the higher catch of chum salmon in the first 

 locality fished was due to the proximity to islands in the Aleutian chain 



where certain of the strs^ams are populated by that species. All of the 

 localities fished along this section line are in excess of U50 miles from 

 the nearest Bristol Bay river and three of the four sets made were in 

 waters beyond tho edge of the continental shelf, in depths of from 900 

 to 1,600 fathoms. This is the first recorded instance of salmon having 

 been captured beyond the edge of the continental shelf. 



lU 



