507. 



■ 



igfe fjtitr 



MaoJiitte. Reel. 

 Turn* Cor. + iteptft 



ftliob or lead 

 'Bottom, 



Jicrtlom temperature 



of ihfrtrumtcLtir Cor. 

 Corrected temperature 



Air S/erf ace / >> i / ' 



Trawl or dredge 



SOUNDING WIRE. 





DREDGE ROPE. 



DOWN, 





TURNS, 



DOWN. 









o 











100 











200 











yx> 











400 











500 











600 











700 











9oo 











900 











1000 











1 !■■ ■ 











12UO 































150a 











[fxx> 











1700 











iftoo 











1900 











2000 











2100 











2200 











2300 











2400 







i ,V,J 



