Depth ^^^^ 



Ttcms *i<f Cor. 4- \(r 

 ^^fhoL^r lead ^ a ^ 

 lioUom 



jYo. nf thermormUir ^ ^Ji M Oor ntf ^ 



Citrrcctod ttnvp^raitt^e ^S'^i 



Mr ^^Y' fiitrfctcG Drift 



SOUNDING WIRE. 





DREDGt 



ROPE. 



/ / • 1 













o 











lUO 























300 



















/ 



r«jf 1 





















jm 































Tc«no 











JirKj 









i 













t V4J(} 









* 























I4f>j 





V 







1500 











1600 











171x1 











iBoo 































aaori 





















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