Dale 

 Machine. 

 Turns *J 0 Cor, i 

 &lu*t. ftr lead 

 Bottom *y»J 



'Bottom h'ntfunihifr 

 Jj/04 of Thrrniffii' lr r 



Corrected U'lu/ieraltirc " 



L * £ 

 . lir Surface v 



Triuvt or dredge or tartgh • 



SOUNDING WIRL. 



LK>WN. ur. 



uo 



JOO 



400 

 500 



Go<i 

 700 

 800 

 900 



IIOO 



!2Gu 

 IjOO 



1 fO 

 I50O 

 1600 



[7UO 



itjoo 



2000 



21W 

 220O 

 2JUO 



Ttpat. 



Depth • 



Drift. 



DRED GE ROPE. 



IMIWS. I (if. 



