Somerton et al.: The effects of wave-induced vessel motion on the herding of Limanda aspera 
23 
Headrope 
Trawl net 
Footrope 
-«•— 40 m 
25 m 
Corner 
Figure t 
(A) Schematic diagram of the 83-112 Eastern survey trawl used in an experiment 
conducted in the eastern Bering Sea during September 2003, shown from the side 
(upper diagram) and from above (lower diagram). Various trawl components re¬ 
ferred to in the text are identified in the upper diagram. Placement locations of 
bottom contact sensors along the lower bridles and footrope are indicated by arrows 
in the lower diagram. (B) Diagram showing the trawl dimension variables used in 
the catch ratio model to describe how wave height can influence herding of yellow- 
fin sole (Limanda aspera). 
