B - Operations – Transporting – 63 – B
Patent
B - Operations, Transporting
63
B
114/25
B63B 35/44 (2006.01)
Patent
CA 1237341
A b s t r a c t A method for docking of a floating structure, e.g. a concrete offshore platform. According to a first embodiment, a pit (3) separated from the sea by means of sand or gravel deposits (1; 4) is exca- vated, whereupon the structure (7) is erected entirely or partly in the pit (3). The depth of the pit (3) is increased by building the upper edge of the pit upwards to an upper level, whereupon the pit is filled with water (10) in order for the structure to become floating. The deposits (12) situated at the bottom of the pit (3) and under the structure (7) are next removed by means of suitable techniques in order to lower the bottom of the pit (3) to a lowest level, while the level (11) of the water (10) in the pit (3) is maintained. Then the level of the water (10) is lowered to a lower level (14) corre- sponding to the level of the sea (2) on the outside and the dike (4; 8) separating the pit from the sea is removed, whereupon the structure may be floated away from the pit. According to a modification, two pits are excavated next to each other, one being deeper than the other. After the structure is erec- ted, the pits are filled with water and the struc- ture is floated from the shallower to the deeper pit. Next, the water level of the pits is lowered to the level of the sea on the outside, whereupon the dike separating the pit from the sea is removed.
493410
Marks & Clerk
Selvaag-Bygg A/s
LandOfFree
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