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Q&A What should seas be filled with to make boats impossible without balloons

Boats and balloons both work because of buoyancy - they are pushed up by a force equal to the weight of displaced water/air respectively. I want my (otherwise earthlike) planet to have 'seas' of a ...

6 answers  ·  posted 6y ago by F. Name‭  ·  last activity 6y ago by F. Name‭

Question earth-like earth