| 摘要 |
This invention relates to a floating construction (11) such as for instance a SPAR buoy, which is connected to the seabed (32) by means of tethers and/or risers (15, 16). At the top part the floating construction (11) comprises a displacement member (17') mounted on a mounting frame (17). Two risers (15, 16) and/or tethers that are placed on respective sides of a vertical center line (22) of the mounting frame (17) are connected to the displacement members for causing oppositely directed and substantially equal displacements thereof upon tilting and/or the sideways excursion of the floating body (11). Hereby a substantially similar tension in the connecting elements (15, 16) is maintained. In one embodiment displacement member comprises a pivotable arm (5) or pivotable deck structure connected near the upper end of the floating body to provide a dry tree. Alternatively the displacement member may comprise pressure fluid cylinders (39) or a cable construction (51, 52). Preferably the floating construction is at its lower end provided with a pivotable guide casing to cause a gradual bending of the riser and/or tethers.
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