FIGURES 



Figure 1. Area map showing STU sites off Pacific Coast; STU structure m inset. 



Figure 2. Oceanographic data at STU sites. 



Figure 3. Corrosion rates of low carbon steels at various locations. 



Figure 4. Corrosion rates of wrought iron and Armco iron. 



Figure 5. Corrosion rates of steels in sea water. 



Figure 6. Corrosion rates of steels in the bottom sediments. 



Figure 7. Statistical curves, 95 percent confidence limits, for steels m sea 

 water. 



Figure 8. Statistical curves, 95 percent confidence limits, for steels in the 

 bottom sediments. 



Figure 9. Median statistical curves for steels in sea water and in the bottom 

 sediments . 



Figure 10. Effect of nickel on the corrosion rate of steel in sea water. 



Figure 11. Corrosion rates of cast irons in sea water. 



Figure 12. Corrosion rates of cast irons in the bottom sediments. 



Figure 13. Corrosion rates of austenitic cast irons in sea water. 



Figure 14. Corrosion rates of austenitic cast irons in the bottom sediment. 



Figure 15. Statistical curves, 95 percent confidence limits, of cast irons m 

 sea water. 



Figure 16. Statistical curves, 95 percent confidence limits, of cast irons in 

 the bottom sediment. 



Figure 17. Statistical curves, 95 percent confidence limits, of austenitic cast 

 irons in sea water. 



Figure 18. Statistical median curves for alloy steels, cast irons and austenitic 

 cast irons in sea water. 



Figure 19. Statistical median curves for alloy steels, cast irons and austenitic 

 cast irons in the bottom sediments. 



