f*tt 



1 



Machine, ^ / RmI^ 

 Corrected tefrip^'ratit^ra 



^ir Sitrfaoe DHft 



Trawl or dradgo 



SO UNDING^IRE. 



23 ^-f 

 .2, 9 s> 



I ATI 



/o 



.)(«) 



7 



1 J(X> 



i6oo. 

 1700 



•.•txx) 

 sstoo 



2300 



DOWN 



DREDGE R OPE. 



UP. 



