surface leaving the z i nc-rich-epoxy primer exposed. In addition, 

 approximately 5^ of the area of the upper portion of the sphere was 

 covered with water-filled paint blisters. The areas of exposed primer 

 were covered with a thin film of corrosion products which were sampled 

 and found to be predominately ZnCOH);- by X-ray diffraction analysis. Only 

 two small areas of rust staining were found on the upper portion of the 

 sphere. One area was at a point of mechanical damage and had resulted in 

 a pit nearly 1/8" deep. The rust stain in this area was tightly adherent 

 and black in color. The other area of rust staining was under a mild steel 

 washer found resting near the top of the sphere. The staining was from 

 the washer which was covered with a tightly adherent black oxide. There 

 was no failure of the paint coating associated with the washer. 



The coating on the joint between the sphere and the steering carriage 

 showed no damage. Some slight rust bleeding was noted at the faying 

 surfaces in a few areas. The paint in these areas was not adversely 

 affected. The only fouling on the steering carriage was a light, hair- 

 like covering of hydroids, a common deep ocean animal. The paint coating 

 on the steering carriage was intact except for areas on the inside of the 

 flanges where the carriage stop housings were attached as shown in Figure 2. 

 The steering carriage altitude and bearing shaft seals were free of attack 

 or deposition. The altitude indicator scale and vernier were rusted in 

 many areas but readable. The steering carriage identification plate was 

 severely rusted. 



The coating on the gas generator support frame was intact but there 

 were a few rusted areas at the flange attachment of the support to the 

 steering carriage. The gas generators were in excellent condition except 

 for the expendable fittings used to start the generators. These fittings 

 were made from aluminum alloys and/or stainless steels and were virtually 

 destroyed by corrosive attack. The titanium cathode on the electrolytic 

 generator was unattacked, the platinum gauze anode was unattacked but 

 was partially clogged by hydroids. 



The three antennas were virtually unattacked except for 12 small areas 

 of rust staining on the compliant tubes. One such area on the low frequency 

 antenna was probed during this inspection and revealed that underneath a 

 thin, adherent black oxide scale there was exposed bare steel with under- 

 lying pits up to 1/15" deep. The gas connections between the ends of the 

 compliant tubes and between the tubes and gas manifolds showed no visible 

 attack on the nipples on the compliant tubes or on the tubing clamps. The 

 antenna support arms had a few areas of rust at areas of mechanical paint 

 damage. Two gooseneck barnacles, one identified as a species of Lepas the 

 other as a species of Chonchoderma, were found on the middle frequency 

 antenna. Later investigations indicated that these individuals had 

 attached themselves to the antenna before its emplacement at depth but 

 had survived for one year at depth. Their small size indicates that the 

 low temperatures and dearth of food at depth severely retarded their growth. 



