INTRODUCTION 



The development of deep diving vehicles which can stay submerged 

 for long periods of time has focused attention on the deep ocean as an 

 operating environment. This has created a need for information concern- 

 ing the behavior of both common and potential materials of construction 

 at depths in the ocean. 



To study the problems of construction in the deep ocean, project 

 "Deep Ocean Studies" was established. Fundamental to the design, con- 

 struction and operation of structures, and their related facilities is 

 information with regard to the deterioration of materials in deep ocean 

 environments. This portion of the project is concerned with determin- 

 ing the effects of these environments on the corrosion of metals and 

 alloys . 



In order to determine the differences between the corrosiveness of 

 sea water at depths and at the surface it is desirable to compare deep 

 ocean corrosion data with surface immersion data. Since surface data 

 was not available in the literature for many of the alloys exposed at 

 depths in the Pacific Ocean, it was decided to establish a surface 

 exposure site to obtain this information. Therefore, a third site 

 designated as Site V was established at Point Mugu, California, 

 latitude 34°06'N and longitude 119°07'W. 



The locations of the three test sites, two deep ocean sites and 

 the surface site, are shown in Figure 1. The specific geographical 

 locations of the test sites and the average characteristics of the sea 

 water at these sites are given in Table 1. 



Reports pertaining to the performance of alloys in the deep ocean 

 environments are given in References 1 through 7. 



This report presents a discussion of the results obtained of the 

 corrosion of various alloys exposed at the surface, site V, for a per- 

 iod of 6 months . 



RESULTS AND DISCUSSIONS 



The results presented and discussed herein also include the cor- 

 rosion data for the alloys exposed at the surface for the International 

 Nickel Co., Inc. Permission for their use has been granted by 

 Dr. T. P. May, Reference 8. 



The deep ocean data from depths of 2,500 and 6,000 feet after 

 comparable periods of exposure are included for comparison purposes. 



