Tu.rtM J Cf Cor. I- ^ 



Bottom tcnvpRi-aUt^re J/j^ //^ 

 J^To. of ThermonU'Ur 

 Correot-ed tnmftt'.mttit'e 

 Air ^J/ tSiir/rUHi ^^^^ 

 Tt'ntifl or drrA^fi or taif^trn 

 SOUNDING WIRE. 



V 



V 



4 



'*"--f ,2 



Uri/'t. 



DREDGE ROPE. 

 DOWN. 



1- « - 

 7'-' 



IJfAl 

 J i4X> 

 J.l« KJ 



I 'je.icj 



|6CK} 



iHnu 

 lycKJ 



.' HHj 



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 3^00 



