But sounds travels even faster in water – 3320mph – and water is harder to move through than air because it is more dense. The fastest thing under water is a torpedo, at around 200mph.
I would have guessed no: as Dave mentioned it would be a very high speed to attain in a media that has low compressibility so it imposes a very strong drag on any moving object.
There is however a website that claims it has been done by anti-torpedo torpedoes, thanks to an effect called supercavitation. Not sure…
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