7km* /fj Cor, + j % Dapiii 1 I T 



JlnHnm femporaluro 

 .A7i. of iUvrtnotiieUr 

 Otfrrccfod tcmpuraitire 



SOUNDING WIRE. 



mivvN. 



AM 



300 

 4«) 

 500 

 CiOO 



700 

 800 



900 

 locx) 



ItCKi 



1^ 



1500 

 1600 

 1700 



1«/X) 



-'4 '■J' 



Drift 



DREDGE ROPE. 



