R&th 



Depth 



No. U / / Thth 



Machine. 

 Ttwna i _ Cor. ± j -j 

 iihvt utHcad ^ f~ / 

 Bottom .. , sS?--c- < r-- 

 Itotlf/tn tnnftendtiie 

 No. of Thermometer \ 

 ( 'orrrctnl irttifu'raturr 



, lit* *7 ^ — Surface / £ 7>ri/fc. / V 



3 



7 f 



< 'nr. 



TrcbUfl nr-rfrrrtrifr 



SOUNDING WIRE. 





DREDGE ROPE. 



HuWN. 



UK 



TURNS. 





vv. 



2 J t^tf 4 





O 











IOO 











aoo 

 300 











.y\<i 











500 











600 











700 

 80a 











90a 











1 000 











I IOO 











1200 











1 |QQ 











l.jnn 











1500 

 ifiOO 











J 700 











1N00 











1900 











3 OX) 











2100 











2200 





















2400 







