Trirnfi for ' 



SUfd or Uuf ii 

 Bottom ^ L ; 



Boilonv temptratiLrts 

 ^u, of Thermometer 

 Corrccf^ed tcm/H'raltue 

 Air C' d Surjact' 

 Trfiwlor dredge or hm oV* 



TiLfdh (.: 



SOUNDING WIRE 



(MlV.S', I I' 



.'00 



400 

 SClrl 



ItXXl 



J Kxt 



I 



Itoo 

 1700 

 I80U 



41 ou 



'i4oo 



Cor. 



Drift, 



DREDGE ROPE, 



