Seattle Biological Laboratory 
Bureau of Commercial. Fisheries 
Summer Fishing Cruise - ±$6k 
In continuing the research on the distribution of high seas salmon* 
the Seattle Biological Laboratory is scheduling a cruise with the MV George Bo Keless 
into the western north Pacific Ocean in late mxaanez'o The vessel will depart Seattle 
on August 19 and return about October 23 . 
The general area of fishing operations will be southwest of Attu Island... 
between longitudes 175 “®“ and 165°E» and. between latitudes L 7 * Ho and H. 
(See attached chart®) Fishing will be accomplished primarily with gill nets of 
various mesh sizes; longline gear will be used on occasion® 
The objectives of the summer 8 * fishing cruise are; 
(1) Extend our knowledge of the distribution and relative abundance of 
immature salmon to further westward, areas of the North Pacific* and determine 
westward limits of and migration paths of the westward moving salmon® 
(2) Conduct comparative fishing with gill net and longline gear in 
order to compare the effectiveness of the two kinds of gear in taking the various 
age groups of salmon. 
(3) Continue our study of means of detecting salmon by sonar® We will, 
utilize two kinds of sound systems in attempts to relate sonar echoes and salmon 
catches. 
(h) Initiate studies on the question of gill net drop exits. Primarily on 
this cruise* we will record and compare catches in eTiperinsental nets fished for 
varying periods of time during a night® 
