Scana Offshore As

Seasystems As

Torkjell Lisland

Alf Reidar Sandstad

Lars Even Nilssen

Torbjørn Mollatt

Henrik Strand

The invention relates to a mooring tensioning arrangement for a floating structure or a vessel (), comprising -a mooring line () having a first mooring part () and a second mooring part (), divided by a midwater coupling (), said at least a portion of the mooring line () is made of synthetic material, -said mooring line () is extending between an anchor () arranged on the seabed and a pulling unit () arranged separate from the floating structure or vessel (), said mooring line () is extending at least via a fairlead pulley or a chain wheel () arranged on the floating structure () between the anchor and the pulling unit () when the mooring line () being pre-tensioned, -a chain stopper () being arranged in connection with the mooring line () between the anchor () and the floating vessel or structure () for tensioning the part of the mooring line () situated between the floating structure () and the anchor () at a pretension level. The mooring tensioning arrangement further comprising a second tensioning line () configured to be attached in one end to the midwater coupling () and in the other end coupled to the pulling unit () when said mooring line () being re-tensioned, said midwater coupling () and the pulling unit () being arranged relative each other such that the tensioning line () is configured to impose a lateral force on the part of the mooring line () arranged between the anchor () and the floating structure () for removing stretch in the mooring line (). The invention also relates to a method tor tensioning the mooring tensioning arrangement.

Method and an arrangement for removing stretch in polyester mooring lines with an inline tensioner

A mooring tensioning arrangement for a floating structure or vessel (), comprising an anchor (), a mooring line (), a mooring tensioner () and a working line (), said mooring tensioner () having a tensioning pulley (). A tensioning force is imposed on said mooring line (), which is directed towards said floating structure or vessel ().

Mooring pulley tensioning system

A turret mooring and riser hang-off arrangement, for transferring petroleum products from an off-shore or subsea facility to a vessel, including a turret arranged in a cavity of the vessel. The turret is held firmly in axial and radial directions within the cavity, but is rotatable relative to the vessel. The turret is adapted to be moored to the seabed. A riser assembly extends through a bore in the turret to an upper surface of the vessel. The bore of the turret is a monobore and the riser assembly is rotationally coupled to the turret but is free to move axially relative to the turret. The riser assembly is axially supported by the vessel.

Turret

A mooring arrangement for a floating vessel includes a linear anchor winch and an elongate mooring arm. The mooring arm is coupled to a mooring arm bracket via an articulating joint and the arrangement is adapted to receive an anchor chain. The bracket is attached to the vessel at the gunwale of the vessel, so that the bracket at least partially extends above the deck of the vessel. The anchor winch is coupled to or integrated with said bracket.

Mooring arrangement

A mooring unit for a vessel comprising an arm, a universal joint, and a chain stopper. The universal joint is arranged between the vessel and the arm, and the universal joint is adapted to be pivotally coupled to a bracket and the arm enabling the mooring unit to pivot about a first axis and a second pivot axis, said first and second pivot axes are arranged perpendicular to each other in substantially the same plane. The universal joint includes a link element for receiving a first and second ear pair of the respective arm and bracket. The ears and link element are coupled through journals. The link element includes walls extending on both sides of the respective ears so that the respective journals are supported by both walls.

Growing community of inventors

Drøbak, Norway

Torkjell Lisland