The present invention relates to methods, controllers and computer program products for determining an optimal tilt angle for a wind turbine. One or more signals indicating site conditions at and/or near a wind turbine are received 402 and an optimal tilt angle for said wind turbine based on said received one or more signals indicating site conditions is determined 403. The optimal tilt angle is then transmitted 404 to a platform controller such that said wind turbine can be inclined said optimal tilt angle.

A floating offshore wind power generation facility includes a floating body, a mooring cable, a tower, and a windmill installed at the top of the tower, the windmill including a nacelle and a plurality of blades. The rotation axis of the windmill has a predetermined upward angle to avoid contact between the blades and the tower, and the windmill is of a downwind type in which the blades are attached to the leeward side of the nacelle and installed with the back surfaces of the blades facing windward, and the mooring point of the mooring cable to the floating body is set at a position below the surface of the sea and higher than the center of gravity of the floating body.

A method of installing foundation elements, in particular (mono)piles having a diameter of five meters or more, in an underwater ground formation includes lowering a leader from a surface vessel with at least the tip of the leader into the water, and lowering a foundation element and/or a noise mitigation screen along the leader.

The present invention provides a floating offshore wind turbine capable of suppressing yawing of a nacelle caused by a gyro effect which is a cause of adverse influence of power generating efficiency of a wind turbine and endurance of devices thereof. The floating offshore wind turbine 10 includes a rotor 11 which is rotated by wind, a nacelle 13 in which a rotation shaft 12 of the rotor 11 is accommodated, and a tower 15 including a turning seated bearing 14 which supports the nacelle 13 such that the nacelle 13 can turn with respect to a sea surface P to exert a weathercock effect. The tower is provided with yawing suppressing means 16 which suppresses yawing T of the nacelle 13. According to this, it is possible to suppress the yawing T of the nacelle 13 generated by a gyro effect caused by yawing Ω generated in the floating body 31 by waves of the sea surface P.

A floating multi-turbine wind power platform for offshore power production, wherein the platform has a substantially elongated shape with an extension direction and being attached to at least two mooring points for securing the platform at its operation site in an original position in relation to the mooring points. The platform includes a device for rotation of the platform (MR1) around an essentially vertical first axis (z1) and further includes at least two wind turbines arranged substantially in a straight line corresponding to the extension direction of the platform and the at least two wind turbines each includes a structural support component and a rotor component. The rotor component is attached to a nacelle which is arranged to rotate using a device for rotation of the nacelle (MR2). The platform further includes a control arrangement (C) arranged to control the device for rotation of the platform (MR1) to rotate the platform only during certain detected wind directions deviating from an original wind direction (WDO) and to limit the rotation of the platform to at the most 90° from the original position, preferably at most ±45°. A method and system are disclosed for aligning rotor components of wind turbines arranged on a floating multi turbine wind power platform according to the above to be essentially perpendicular to a wind direction.

An offshore wind turbine generator comprises a tower 1 and a platform 2. The tower 1 is provided with a side door 4 accessed from the platform 2 using a stairway 5 leading to an upper platform 6. The upper platform 6 is formed from the upper surface of a cabinet 7 which houses a diesel backup generator. Both the backup generator and the cabinet 7 are mounted to the tower 1 by bolts, such that the cabinet and backup generator are fully supported by the tower 1. A diesel fuel tank 12 is also mounted to the tower 1 by bolts. The fuel tank supplies diesel fuel to the backup generator.

A wind power system includes a wind turbine resting on a floating support and an anchoring system for anchoring the wind power system connected to the wind power system by attachment points. The wind power system has the attachment points raised above the waterline of the floating support to a height with respect to the waterline determined so as to counterbalance an overturning moment of the wind turbine subjected to a given wind speed.

Floating TLP wind turbine comprising a buoyancy structure, a plurality of braces, one or more tensioned mooring lines for each brace, and a support structure arranged on the buoyancy structure. The braces extend radially outwardly from a region of the buoyancy structure or support structure, each brace having a distal end portion with respect to the buoyancy structure or support structure. Each distal end portion of the braces comprises a guiding element to allow a guided passage of a tensioned mooring line. Each of the tensioned mooring lines is anchored to the seabed at a first end, and attached/coupled to a region of the buoyancy structure or support structure at a second end, said region being above the region of the buoyancy structure or support structure from which the braces extend radially outwardly. Each tensioned mooring line is guided by the guiding element of the corresponding brace.

Disclosed is a system for deploying, stationing, and translocating buoyant wind- and wave-energy converters and/or other buoyant structures or devices, as well as farms of same. Also disclosed is a novel apparatus and/or machine comprising a farm of buoyant wave energy converters deployed by said method and/or configured to be deployed by said method.

The present invention discloses a portable and re-useable grillage (100) for receiving and supporting a heavy load during transportation as well as methods of making and using same. The grillage (100) comprising a base (3); a load bearing structure (4) coupled to the base (3), the load bearing structure (4) is used for supporting the heavy load; and a framework (5) attached to the load bearing structure (4). The grillage (100) is containerized such that the combination of the base (3), load bearing structure (4) and the framework (5) forming the grillage has external dimensions and weight that conforms with ISO specifications for an intermodal container. The containerized grillage (100) may be used with different sized legs for different sized heavy loads. It may also be shipped in a vertical stacked formation using cost-effective standard shipping for containers.