ivr. 



Machine, ' Reel. 



Depth ^.0. 







^ Stud 



fioUam. Ifim/jeratiirc 3 7 » 



lir Surface ^ ^ 



Trttwl or drcdfSe 



4 — 



Cor. - .i- 

 Drift 



^ SOUNDING WIRE. 







0 







JOO 







iOO 







loo 











7 





r 



'A 



-J/ ^ 



f lull 



I 2« n - 



2400 



DREDGE ROPE. 



