| 摘要 |
A buoyant submersible structure (5) adapted to float above the sea floor comprises a support portion to support a load, and a tank (14) being filled with a gas. The tank has an opening, and a tube being connected to said opening so as to be in communication with the tank. The tube is partially filled with sea water defining a water-gas interface (21) at a first level. For operation of this buoyant submersible structure the buoyancy structure is fully submerged below the water surface so as to be floating above the sea floor at a first depth. The second chamber (20) is partially filled with sea water defining a water-gas interface at a first position inside the second chamber. Then, the buoyancy structure is moved to a second depth that is greater than the first depth. Water is allowed to enter the second chamber so as to raise the water-gas interface to a second level position inside the second chamber higher than the first position and without entering the first chamber (15). Subsequently, the buoyancy of the buoyancy structure is adjusted to tension the tendon or cable, a support structure to support a load is attached to the buoyancy structure, and then the buoyancy of the buoyancy structure is re-adjusted.
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