What hull materials are suitable for a helium-sea jet-ski?
Inspired by this question.
Imagine a sea of liquid helium. Some people like to use submarines, but we've got a better plan.
Impeller pumps are used in jet-skis and can also be used to shift helium around, so we'll assume that the motive power of the craft is dealt with and the internal components are built for the cold. We're also assuming that our own bodies are protected from the ridiculously low temperatures by a MK4 Plot-Device.
As we're not professional helium jet-skiers and possibly in quite shallow helium it may be involved in collisions with the iron-hard water that forms the coastline of our frigid sea.
The question is what hull material is strong enough, light enough and flexible enough to avoid becoming brittle in the extreme cold and easily sustaining damage?
This post was sourced from https://worldbuilding.stackexchange.com/q/70827. It is licensed under CC BY-SA 3.0.
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