Floating structure
AssigneeMoss Maritime AS
InventorsPer Kristensen, Ida Husem, Erik Pettersen, Tor Skogan
Life of this patent
Estimating the term…
Loading patent…
AssigneeMoss Maritime AS
InventorsPer Kristensen, Ida Husem, Erik Pettersen, Tor Skogan
Estimating the term…
The present invention relates to a floating loading buoy (1) comprising a surface element (2), columns (3) connecting the surface element (2) to a submerged pontoon element (4), mooring devices (5) for securing the loading buoy (1) to the seabed (6), at least one attachment point (7) for transfer pipelines (8) from a production/processing/storage unit (9) to the loading buoy (1), mooring and transfer devices (10) for transferring fluid from the loading buoy (1) to a loading/unloading vessel (11). The surface element (2) is arranged floating in the water plane surface (12) and has a substantially rounded cross section in a substantially horizontal plane and a draught in the body of water, the columns (3) extend from the surface element (2) down to the pontoon element (4), which in a substantially horizontal plane has a substantially rounded external perimeter and a draught in the body of water The proportion of the volume of the pontoon element (4) divided by the waterline area of the surface element (2) is in the range 4-7 m, and preferably approximately 6 m, and the draught of the surface element (2) divided by the draught of the pontoon element (4) is in the range 0.31-0.43 and where the vertical mooring rigidity for the loading buoy (1) is over 50% of the waterline rigidity for the loading buoy (1).
A floating structure, especially suitable as, for example, a loading buoy or wellhead platform, comprising a surface element (2) with a substantially rounded cross section in a substantially horizontal plane, columns (3) connecting the surface element (2) to a submerged pontoon element (4) which in a substantially horizontal plane has a substantially rounded external perimeter and a draught in the body of water, mooring devices (5) for securing the structure (1) to the seabed (6) and at least one attachment point (7) for transfer pipelines (8) to a second unit, for example a seabed installation, floating production ship, loading/unloading vessel, etc., characterised in that the surface element (2) is arranged floating in the water plane surface (12), with a draught in the body of water, and that the proportion of the volume of the pontoon element (4) divided by the waterline area of the surface element (2) is in the range 4-12[m3/m2], and that the draught of the surface element (2) divided by the draught of the pontoon element (4) is in the range 0.3-0.5 and that the mooring devices have a vertical mooring rigidity for the loading buoy (1) in the range 20-75% of the waterline rigidity for the structure (1).
Dependencies are inferred from the claim text.