Posted by TDI_2 on July 11, 2002 at 11:32:26:
Ken Kurtis, does this formulaic approach make sense to you? ->
Density of seawater 64.0 lbs/cu ft
Density of freshwater 62.4 lbs/cu ft
64.0/62.4 = 1.025641025
Sample neutrally buoyant ocean diver:
217 lbs Body weight
100 lbs Scuba tech gear dry weight w/ filled tanks
14 lbs Lead weighting with drysuit
331 lbs Total weight for neutral buoyancy in seawater
331/1.025641025 = 323 equivalent neutrally buoyant freshwater weight.
331 - 323 = 8 lbs lead weight to remove for the same diver to be neutrally buoyant in a freshwater lake?
Usually the problem is to work it the other way, from the pool, to the Ocean. But I have a group of tech divers that wants to go to a local freshwater lake, and we are clear on our ocean buoyancy, but not on the freshwater equivalent for our tech gear.
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