Mi 



Depth ' g 



.A>/. 



HiuilMr /tit id ujSI', . . 



iinlhihi /rin/trfuiUt /' Q 



of ThfirniamcUt d ^S'f/ ('or. 7- , / 

 (yfi'/'fitiU'd tom/muUurc ^Vul), I 



^•h'r Surface Drift. 



SOUNDING WIRE. 



^7 



0(M 



700 



t ( V 



III* 



♦ I'm . 



DREDGE ROPE. 



IMJWN. 



HI-. , 



