Depth 



Titrm >- Oor, -f / 

 Sh>f4-or lead >- U 



Jinttam femperaiu,rc ^ j 



Corre-cfed imip^raturc 

 Mr Vf'^^ Surfacf^ 



Cor, ' 



Drift \ 



t»t , SOUNDING WIRE. 



DOWN, 



% m 



300 

 400 

 500 



7. -J 



I I'O 



I .:<.0 



•V" 

 I ^f* I 



I7<x> 

 iJkJo 



aoco 

 2 1 or J 

 4^ 

 S1300 



^ DREDGE ROPE. 



UP. 



