Miscellaneous Submerged Structures 



A great number of structures other than acoustic arrays and habitats 

 have been placed on the seafloor (Table 2). Many of the structures included 

 in this category are scientific or experimental devices and packages. Some of 

 the structures are installed semipermanently, while others are deployed many 

 times but only for short durations. The foundation types include both pile 

 and footing configurations. 



NCEL DOTIPOS System. The NCEL DOTIPOS (Deep Ocean 

 Test-ln-Place and Observation System) is a tethered, bottom-sitting plat- 

 form (Figure 13) with observation systems, control mechanisms, power 

 source, and data telemetry (Kretschmer, 1969; Padilla, 1969 and 1970). 



Figure 13. NCEL DOTIPOS. 



DOTIPOS has a pyramidal frame with an 18-foot-square base and an 

 overall height of approximately 1 6 feet. The platform is supported by three 

 4-foot-square pads. The total submerged weight varies from 1 ,900 to 4,000 

 pounds, depending upon the type of accessories attached. At maximum 



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