Specific Gravity Equalizer System.
DEPARTMENT OF THE NAVY WASHINGTON DC
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This invention relates to a system for varying specific gravity of a submersible or any immersed object under a pressurized environment which includes a compressible piston designed to collapse a certain amount proportional to the submersibles depth so that the specific gravity of the submersible or other immersed object varies and remains almost equal to the specific gravity of the surrounding medium such as water. Author
- Submarine Engineering