11—1023 



Dote 

 MtM'Jilric. 



Cor.+ 



Keel. 



Tama 

 Shot or lead 



UtififHii 



fioHotti friifpcnUitr* 

 Jfo, of thermometer 

 Cor re rli d- U> n hp e nttnre 

 Air Surface 

 Trau/l or dredge 



Depth 



( 'or. 



Drift 



BOUNDING WIRE. 



tKlWN. 



CI'. 



■[MENS, 



DREDGE ROPE. 



i r. 



0 



100 



200 

 800 

 400 







<m 



700 

 800 

 000 

 1000 



linn 

 ] 'Jill I 



[Win 

 MOO 

 lfiOO 



loor> 

 it.... 



ISllfj 



lflOO 

 2000 

 2100 

 2200 

 2:100 

 2-J00 



