A mooring device comprising a vessel and a buoy interconnected by an outrigger having a horizontal pivot axis connection with the vessel and a universal joint with the buoy. The buoy has a vertical traction-resistant torsionally stiff connection with a ground anchor, an auxiliary buoy being provided with a similar connection to a ground anchor and a parallel guide connection with the first-mentioned buoy. The auxiliary buoy carries a tubular connection between a conduit at the bottom and the top of the buoy in such a way that disconnection is easy.
Mooring device comprising a body at a distance above the bottom of a body of water such as a tower positioned upon the bottom of the water. The tower carries a downwardly extending construction loaded by a weight which construction can pivot about a vertical axis at the top of the tower and about a horizontal axis and at its lower end has been connected with a floating device such as a vessel by one or more rigid arms. The point of connection of the rigid arms with the weight loaded construction is located beyond the vertical axis of the tower seen in a direction away from the floating device.
A mooring system for anchoring sea going ships, such as storage or production tanker vessels, and more particularly, a submerged single point mooring system fixed to the seabed and which is particularly adapted for use in arctic waters having surface hazards such as pack ice or icebergs.
A mooring assembly connects a submarine conduit to another conduit of a pipe-line or fixed installation. The mooring assembly comprises a mooring frame, a movable mooring arm and a mooring head. The conduit is to be connected to the mooring head having a lateral passage through which the end of the conduit may extend. The movable mooring arm is pivotally mounted on the mooring frame. One end of said other conduit is fixed on the pivot axis of the mooring arm. A connecting pipe connects the end of the submarine conduit to the end of the other conduit. A coupling assembly at the outwardly extending end of the mooring head pivotally connects an axial extension of the end of the conduit to be connected to the mooring head.
A stable offshore platform for surface or undersea work is provided by connecting a semi-submersible trailer unit with a workboat. Preferably, two columns of the trailer are joined by a beam member or truss, and this assembly is linked to the workboat via a truss-like trailer tongue with a ball swivel joint. When in transit, the semi-submersible unit is deballasted to a shallow draft condition and towed by the workboat.
A boom is described for use on a single point mooring system to connect a tower thereof to tankers or other vessels, wherein the boom is constructed to enable rapid attachment to a vessel and to protect boom components when not connected to a vessel. The boom has an inner end pivotally connected about a horizontal axis to a transfer structure, and has an outer end forming a compressible structure which can withstand compression and tension loads during coupling to a vessel. The boom end can be pulled up along the bow of a vessel until a secure connection can be made to the vessel, at a level at which a pipe connection at the end of the boom can connect to a pipe connector on the vessel. A buoyancy tank connected by a strut to an outer end portion of the boom holds the outer end of the boom at a considerable height above the water. Tanks lie on either side of the pivot axis of the boom, and a pump can be utilized to transfer water from one tank to the other to raise or lower the boom.
