Controllable variable depth mooring system and method
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United States of America Patent
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Jul 14, 1992
Grant Date -
N/A
app pub date -
Jun 21, 1991
filing date -
Jun 21, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A mooring system and method of anchoring a buoyant module (16) in a submerged location in the sea for supporting an underwater structure such as a plurality of acoustical arrays (18) for receiving and transmitting acoustical signals is disclosed. The buoyant module (16) is held in a submerged position by at least one anchor leg or line (46) anchored to the sea floor and of a variable length to permit controlled movement of the module (16) to the sea surface (10) for servicing. The single anchor line (46) is a stretchable line and includes an upper segment (56) formed of a Kevlar material and a lower segment (58) formed of a nylon material. Line 46 may stretch easily for a length of 400 feet, a preferred submerged depth of the module (16). Module (16) includes a constant buoyant material (36) and a source of compressed gas (32) controlled by a remotely actuated valve (40) to provide a variable buoyancy.
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