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by londons_explore
1100 days ago
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You either put floats (ie. Gas chambers of fixed volume) or sealed tanks of a light liquid, for example kerosene. For high depth like this, tanks of a light liquid are probably most suitable. I'd probably use liquid butane. With a vapour pressure of 40 psi, it is easy to contain, and is has a density of only half of water. If it leaks, there won't be an environmental cleanup cost either. |
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