are bad, the light buoys are placed every 

 30 hachi to eliminate drag. 



Setting the longlines around 10 p.m. 

 requires about 2 hours. Before each set, 

 water temperatures and currents are care- 

 fully noted and the lines are made up into 

 suitable lengths (strings), which are then 

 set parallel or diagonal to each other. 

 Retrieving the lines, which begins at mid- 

 night, takes about 6 hours. Figure 2 shows 

 the makeup of a longline and the methods of 

 baiting. 



FISHING TREND AND CATCH 

 COMPOSITION 



At the beginning of the fishing season, 

 the fishing vessels operate off the coast 

 of northern Honshu and southern Hokkaido, 

 with many of the larger vessels fishing in 

 the area east of 155° E. longitude between 

 43° N. and 45° N. latitude. 



As the season progresses, the salmon 

 fleet gradually works northward. In June 

 fishing is concentrated off the coast of 

 Hokkaido between 42° N. and 45° N. latitude 

 and extends east to 160° E. longitude. In 

 July and August, the best areas of fishing 

 are found off the central Rurile Islemds 

 between 46° N. and 48° N. latitude. Figure 

 3 shows the general trend of the fishery 

 for the past 2 years and the catch composi- 

 tion of the different areas by time. 



Pink salmon form the bulk of the total 

 catch, being found in great abundance in 

 areas relatively close to shore at the be- 

 ginning of the season. In early May, in 

 the vicinity of 44° N, latitude and 157° E, 

 longitude, pinks constitute approximately 

 30 percent of the catch, red salmon 20 per- 

 cent, and chum salmon 50 percent. A month 

 later, in June, pink salmon make up 80 per- 

 cent of the catch in this szune area, and 

 chums 20 percent. 



Wood Floof 



S'l-g" (2"x95"xO,6") 



HT 



Manila Twine 



■Sr:7z 



'39" 



-7.5 



T- 



.,_ Nylon- 

 Leader 



One "hachi": 300 — 400 feet ■ 

 49 ~ 60 hooks 



Light buoy every 10 "hachi" 



Two methods used in baiting hooks 



Figure 2. --Longline -gear arrangement and baiting medjods. 



