Figure 2. — Lifting catch of Lake Superior chubs aboard R/v Kaho. 





Figure 3. — Echogram made off Ontonagon on June 3, 1965, showing good bottom concentration of chubs, A 1/2-hour 



trawl drag over this area caught 450 pounds of chubs. 



trawling. During cruise 18, 20 of the drags 

 were 15 minutes long to delineate unknown 

 trawling grounds. On other occasions, 48 drags 

 were ended early to prevent fouling fishing 

 gear set by commercial fishermen, i.e., gill 



nets, or to reduce the number of trout caught 

 in areas known to have large concentrations, 

 or because snags were encountered. The 

 gear was severely damaged on 17 drags and 

 had minor tears on 39 drags. 



