I was doing a bit of research on flywheels as a capacitor, but I found during my research that large ships actually use flywheels to keep the ship from rocking.
They have flywheels made of carbon fiber nowdays that can spin at very high speeds. The main concern of flywheels is the amount of energy created in them and the explosive power if the material breaks up while spinning. In a seastead you could have the flywheel chamber surrounded by water…any explosion would be dampened by sending shrapnel into the water.
With vacuum sealing and magnets they’re very efficient.
Might as well kill two birds with one stone and make it in to a gas centrifuge amirite?
If you make it two counter-rotatin flywheels,
then you could make your seastead into a flying saucer.
That’s how the Nazi’s made flying saucers,
counter-rotating electro-magnetic flywheels.



So we could have flying cities,
though we can start with floating ones.
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If you make it two counter-rotatin flywheels,
then you could make your seastead into a flying saucer.
counter-rotation flywheels only cancel each other out. You would want them counter-rotating during calm seas and both pointing toward the waves during rough seas.
I would actually think having several small flywheels that could be turned automatically would be best. With their energy storing capability they would be quite an asset.
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