Twrns 



Jinttom temperature 



, VV/. of thmnonvattsr ^ ^ ^ ^ t/ 

 Correct vfl terfip^raiur^ 40vl 



y ^ Surface H (\ 

 Trmvl or wreilgu ' 

 SOUNDING WIRE 



I 



Cor. "ft)i I 



Drift 



DREDGE ROPE. 



700 



goo 

 tooo 

 iiac» 

 1200 

 1300 

 1400 

 t5«> 



t(MXi 



1700 

 tSoo 

 1 91 JO 



2000 



»4U0 



POWM. 



I 



