| 摘要 |
A float including at least two structural members, enclosing a cavity having a volume which is variable by means of a relative movement of the structural members, said relative movement resulting in a change of the buoyancy of the float. According to the invention, the float includes a volume which is intended to be filled with water through an opening when the float is immersed in water, as well as an evacuating duct through which air is intended to flow out of the volume when the water flows in through the opening.
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