SOUNDING- WIRE. 

 Jj. M. Dowy. | Up. 



4 k ili-o 4 1 



2 M- 



*7 4^ 



a 



1(X> 

 200 







DREDGING CABLE. 



IF 



400 



500 ft 

 700 



Ml Ml 



900 

 1000 



:U3 



