We have invented a floating platform with 3 canted columns, a new type of fairlead, and a new method of mooring line makeup and installation method, that can be used for canted columns. The platform includes 3 columns having upper ends projecting above water surface. The columns are canted or inclined inward from the corner of hull toward the central vertical axis. The 3 columns converge at the top of column such that each column will lean against the other 2 columns. Each column has two connection points to the other 2 columns. Horizontally disposed pontoons interconnect adjacent columns at the lower ends. The columns and pontoons form a closed structure hull to support a foundation structure directly above the top of column.

The invention relates to floating platform mooring and involves an improved platform mounted tendon tension monitoring system with porch-mounted variable reluctance measurement technology sensors configured. The variable reluctance measurement technology sensors of this system are optimized for porch mounting. The porch-mounted tendon tension monitoring system can also be configured such that the porch-mounted optimized variable reluctance measurement technology sensors are replaceable. Sensors may be replaced to extend the desired useful lifetime of a tendon tension monitoring system or in the event that a sensor happens to malfunction. A plurality of variable reluctance measurement technology sensors can be configured in sensor packs at the corners or at other locations where tendon tension monitoring can be useful for a floating platform.

Disclosed is a floating wind turbine assembly, including a floating platform and a wind turbine arranged on top of the floating platform, the wind turbine having a mast with a mast axis, of which a lower end is connected to the floating platform, and a nacelle arranged on top of the mast, wherein the floating platform is connected to a seafloor with a plurality of tensioned mooring lines, wherein the mooring lines each include a mooring line axis extending in a longitudinal direction of the mooring line, wherein the mooring line axes intersect each other at a crossing position on the mast axis and at an elevation level at or above the nacelle, as well as a method for mooring such a floating wind turbine assembly.

A semi-submersible marine structure is described. The structure includes a hull including a pontoon, a deck disposed above the pontoon, and a plurality of columns supporting the deck from the pontoon. The structure also includes a plurality of tendons supporting the hull from a seabed. The pontoon has the shape of a circular ring, and the plurality of tendons are arranged at regular intervals along an external circumferential surface of the pontoon.

A suction anchor for a subsea well is provided. The suction anchor comprises: a wellhead support structure, wherein the wellhead support structure is at least in part external of the internal volume.

The floating apparatus for wave power generation according to the present invention includes; a floating unit floating on a sea surface; an energy unit configured to convert a kinetic energy of the floating unit to an electric or hydraulic energy; and a transfer unit configured to transfer the kinetic energy of the floating unit to the energy unit.

A riser tensioner bearing is provided. The riser tensioner bearing is an asymmetric bearing having an outer member comprising a cylindrical outer profile and an at least partially spherical interior profile, and an inner member comprising an at least partially spherical outer profile and a substantially cylindrical outer profile.

A very large floating structure based on modular units and a combined mooring system. The system includes a central large platform module, small outer platform modules, tension-legs, mooring lines, oscillating float-type wave energy converters and module connectors. The oscillating float-type wave energy converters can convert the swinging motion of the floaters into the horizontal motion of the piston rods through the gear wheel-rack transmission. Module connectors between modules are divided into two kinds of modes. One can utilize both relative torsional motion and horizontal motion between the central large platform module and the adjacent small platform modules, while the other simultaneously generates power and reduces the relative motions between the adjacent platform modules. The wave energy converters on the outer modules of the very large floating structure can generate power by absorbing the incident wave energy.

A connection apparatus 10 for mounting a cable to a structure such as a wind turbine or oil rig. The apparatus 10 comprising including a receiving member 14 comprising having a hollow body with a diverging mouth, a latch member 22 movably mounted on the outside of the receiving member 14 with a latch part 24 extending into the receiving member 14. A mounting member 16 is provided which mounts the cable extending therethrough. The mounting member 16 is selectively locatable in the receiving member 14 with the latch part 24 engaging with a retaining formation in the form of a groove 56 to retain the mounting member 16 in the receiving member 14 and hence retain the cable mounted to the structure.

A floating wind turbine farm 230 includes a plurality of anchors 20/202/204/206/208 fixed in or on a bed of a body of water. A plurality of floating wind turbine platforms 10 is deployed in the body of water, each of the floating wind turbine platforms 10 having one or more mooring lines 200/212 that extend between, and are attached to, the floating wind turbine platform 10 and one of the anchors 20/202/204/206/208. Each anchor 20/202/204/206/208 is configured to receive two or more mooring lines 200/212, wherein each of the mooring lines 200/212 are from a different one of the plurality of floating wind turbine platforms 10.