Probably floats. It looks like at least 1.5 m in diameter, which means it displaces ~2 metric tonnes of water; so as long as it weighs less than that (~4000 lbs

Probably floats. It looks like at least 1.5 m in diameter, which means it displaces ~2 metric tonnes of water; so as long as it weighs less than that (~4000 lbs, including occupants) then it will float.