Other Deployed Habitats. Although a number of additional habitats 

 have been used on the seafloor, little information exists on their performance. 



During the spring and summer of 1969, Chernomer I, a Russian habitat, 

 was placed in 33 feet of water at Golubaya Bay in the Black Sea (Hydrospace, 

 1969). The 125,000-pound habitat utilized a large surface buoy for support. 

 During a gale, the habitat was reported, in one instance, to have been lifted 3 

 feet off the seafloor — presumably by the surface support buoy. The habitat 

 then dropped, and "bounced on hydraulic base supports." As a result of this 

 treatment, the habitat assumed a cant of 40 degrees. 



Chernomer 1 1 was designed for use in water depths to 1 1 5 feet 

 (Hydrospace, 1969). This habitat, which was to be nearly independent of 

 surface support, is 1 feet in diameter by 25 feet long, weighs 1 44,000 pounds, 

 and is supported on four legs. 



The German company of Deutsche, Babcock, and Wilcox deployed a 

 habitat in 33 feet of water in the East Sea during the fall of 1968 and the sum- 

 mer of 1969 (Ocean Industry, Jan. 1970, p. 12). The habitat was manned for 

 14 days and remained on the seafloor for 2-1/2 months. From photographs, 

 the habitat appears to be supported on four footings. The footings are about 

 5 feet in diameter, and each is rigidly attached to a stiff leg. 



Students and faculty at the University of New Hampshire fabricated 

 and deployed the 8-foot-diameter by 12-foot-long habitat, EDALHAB (Engi- 

 neering Design and Analysis Laboratory Habitat), in Alton Bay, New Hampshire 

 (University of New Hampshire, 1967; Undersea Technology, 1970). EDALHAB 

 supported four men for 48 hours at a depth of 26 feet. The EDALHAB struc- 

 ture is slightly buoyant. The foundation consisted of two 6,000-pound anchors. 



A second German habitat was deployed in 75 feet of water off 

 Helgoland in the North Sea during the summer of 1969 (Hydrospace, 1969). 

 Three teams of aquanauts spent a total of 22 days in the habitat. The habitat, 

 which was left in place on the seafloor for use during the summer of 1970, is 

 8 feet in diameter, 30 feet long, and has a design depth capability of 330 feet. 

 A large surface support buoy, moored by three anchors, provides required 

 breathing gases and power. The foundation for the habitat consists of two 

 strip footings, each approximately 2 feet wide by 30 feet long. The habitat 

 is supported on footings by four adjustable legs designed to compensate for 

 uneven seafloor topography. 



On several occasions during the past 3 years, the Russians have used 

 a hemispherical fabric tent with a wooden floor as a habitat (Hydrospace, 

 1969). These habitats, called Sprut, have been used in the Black Sea to sup- 

 port two men for 2 days at water depths of 30 to 40 feet. The fabric tents 

 are buoyant and are anchored to the seafloor. In at least one instance, Sprut 

 was secured to two submerged rocks. 



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