I never understood why a lifeboat wouldn’t have a water desalination system to desalinate sea water
a shallow amount of salt water over a black surface in the sun would evaporate quickly... have a collector to grab the steam and condense. it would also double as a solar collector for electricity. of course, this woukd only work in bright sunny areas
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I took a water survival course many years ago and the life rafts did have such a device. They were inflatable and used evaporation from the sun.
well, that's good to know. just seemed like common sense to me