





INC 



■ 5,500 Feet 

 2,350 Feet 





1 







\J - 



A ■ 





1 





) 









1 



V/aSOv/v 











/ 





m 











c 



^^^^1/// 















200 



400 600 

 Exposure , Days 



800 



1000 



1200 



Figure 15. Statistical curves, 95 percent confidence 

 limits, of cast irons in sea water. 



