Yoke damping system
AssigneeSingle Buoy Moorings Inc.
InventorsPierre Balleraud, Jean-Robert Fournier
Life of this patent
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Abstract
A mooring system for a floating structure (1) in which a floating structure or fixed tower is provided with a turntable (80). A floating structure is moored to the turntable via at least one rigid arm (51,51′) and two tension members (41, 41′). The rigid arm is provided on one end with a ballast weight (61, 61′) and includes a damping system formed of least two separated liquid tanks (70, 70′) that are partly filled with liquids and placed at the same distance from the horizontal center line (100). The tanks (70, 70′) are fluidly connected with each other so that liquid can be exchanged between the tanks damps a swinging yaw motion of the rigid arm (51, 51′) around the vertical axis of the turntable (80).
Claims16
Mooring system for a floating structure (1), such as a vessel, comprising
- a mooring structure (4), such as a buoy, a further floating structure or a fixed tower, having a turntable (80) situated on a horizontal centre line (100) and rotatable around a vertical axis (260), and
- a connection structure adapted to provide a connection between the floating structure (1) and the mooring structure (4), the connection structure comprising
- at least one rigid arm (51,51′) and
- two tension members (41, 41′),
- wherein the rigid arm (51,51′) is provided with a ballast weight (61, 61′) and wherein the rigid arm (51,51′) and the tension members (41, 41′) at one end are hingedly interconnected and at their other ends are adapted to be connected to the mooring structure (4) and the floating structure (1) respectively or reverse,
- characterized in that
- the rigid arm comprises a damping system, the damping system comprising at least two separated liquid tanks (70, 70′) that are partly filled with liquids and placed at the same distance from the horizontal centre line (100), the tanks (70, 70′) being fluidly connected with each other so that liquid can be exchanged between the tanks to damp a swinging motion of the rigid arm (51, 51′) around the vertical axis of the turntable (80).
Dependencies are inferred from the claim text.