| 摘要 |
A gravity base 1 and a taut moored buoyant structure 2 are connected by one or more pre-attached flexible connectors 5 with calculated pre-determined lengths and are floated to an installation site, the gravity base 1 is then ballasted to the seabed whilst the buoyant structure 2 remains attached to the base 1 by the flexible connectors 5 and is thus pulled into an upright semi-submerged position close to the desired installed draught held by tension in the connectors 5. Flexible connectors 5 may be replaced following installation by permanent moorings (10 fig 3) and the final position of the buoyant structure 2 can be finely adjusted using hydraulically extendable devices (9 fig. 4) pre-attached to each flexible connector 10. The buoyant structure 2 can be supported by the gravity base 1 during tow out (fig. 5) or the two can be towed some distance apart. The gravity base 1 may include storage capacity for fluids and the buoyant structure 2 may be for use in the offshore oil, gas or energy industries. |
