Abstract: Described are methods and systems comprising providing an energy hub having an electrical infrastructure; providing a number of generators of electrical energy and a plurality of consumers of electrical energy connectable to and disconnectable from said electrical infrastructure, the plurality of consumers comprising at least one critical consumer of electrical energy and at least one non-critical consumer of electrical energy; disconnecting the energy hub from the grid; supplying said electrical infrastructure with electrical energy from at least some generators among said number of said generators of electrical energy; using said electrical energy by means of at least some consumers of said plurality of consumers; monitoring at least voltage and frequency of said electrical energy in said electrical infrastructure; and selectively disconnecting and/or reconnecting one or more of said non-critical consumers of electrical energy.

Abstract: Wind turbine lightning stroke diagnostic apparatus for a wind turbine having conductive blades. A lightning protection system input is provided for receiving measured current data associated with a current conducted by the lightning protection system following a lightning stroke. An air pressure sensor is mounted using a mount within an internal cavity of a conducive wind turbine blade assembly. A sensor monitor monitors the measured current data and the output of the air pressure sensor for identifying a bypass lightning stroke when a measured current increase coincides with the detection of a lightning generated shockwave within the internal cavity by the air pressure sensor.

Abstract: Devices are methods are disclosed for a ladder cleaning device. The ladder cleaning device comprises a number of rings. The rings are adapted to be arranged around rungs of a ladder. A cord passes through a hole in each of said rings. The device further comprises at least one attachment device adapted for attaching said cord to the ladder. The ladder cleaning device may be in the form of a kit of parts to allow retrofitting on the ladder.

Abstract: Described are systems and methods for black-starting an electrical grid, comprising disconnecting an energy farm from the grid at a first location, said first location being located between the electrical grid and the energy storage with the associated converter, providing a synchronous condenser, energizing the AC export cable using said energy storage and the associated converter, energizing at least one part of the energy farm electrical infrastructure via said AC export cable using said energy storage and the associated converter, re-establishing energy supply to said energy farm electrical infrastructure by said electric generators, energizing said synchronous condenser, and reconnecting the energy farm to said electrical grid at said first location.

Abstract: Described herein are systems, methods, and structures for transferring an object between a ship and an offshore structure, comprising a hoisting mechanism arranged on the offshore structure and adapted to attach to the object, at least one range sensing device adapted to provide data relating to a detected distance from a reference point on the offshore structure to the ship, where the system is adapted to receive the data from the at least one range sensing device and to move the hoisting cable in response to the detected distance, and a motion reference unit adapted to provide data relating to a detected motion of the ship independently of the at least one range sensing device, and wherein the system is adapted to move the hoisting cable in response to the detected motion of the ship.

Abstract: Described are ships and docking systems comprising a fender for mounting on a bow of a ship, comprising an elastically deformable body portion, and a concave engagement surface defined by the body portion, wherein the concave engagement surface extends perpendicular to a center line of the ship, such that portions of the fender distal to the center line extend further forward in a direction parallel to the center line than a portion of the fender central to the center line.

Abstract: A foundation (1) for a structure such as an off-shore wind turbine. The foundation (1) comprises a body (4) having a lateral surface (8,9) and a distal end (5) for insertion into a soil (2). At least a region of the lateral surface (8,9) forms a first electrode. A second electrode (7) is provided on the lateral surface (8,9) of the body (4) and is electrically insulated from the first electrode. The body (4) further comprises a spacing formation (6) for forming a gap (11) between the second electrode (7) and the soil (2) when the body (4) is inserted into the soil (2). In use, an electric potential may be established between the electrodes to induce electro-osmosis in the soil for allowing the foundation to be installed more easily. The polarity of the electric potential may also be reversed for stabilising the foundation.

Abstract: Disclosed is a method for estimating deterioration of a steel support structure (180) supporting an offshore wind turbine (181). The steel support structure (180) being made of a first type of steel, the method comprising the steps of: (a) providing a first sensor (111) having one or more sensor elements, wherein a first sensor element of the one or more sensor elements is made of a type of steel corresponding to the first type of steel; (b) arranging the first sensor (111) in connection with said steel support structure (180); (c) inducing an electrical current through at least one of the one or more sensor elements; (d) monitoring the deterioration of a part of the first sensor (111) by in a first time interval measuring electrical properties of the first sensor (111) and storing the measurements as first data; (e) estimating the deterioration of the steel support structure (180) from the first data.

Abstract: A method for the use in offshore crew transfer when transferring a person between a crew transfer vessel and a structure or vice versa where a prediction system for predicting vessel bow motion in response to sea waves detected by said wave detection device is used. An indicator is adapted to indicate a prediction of vessel bow motion below a first bow motion threshold value within a first predetermined time period based on said prediction system. The transfer of the person only takes place when said vessel bow motion is indicated to be below the first vessel bow motion threshold value within the first predetermined time period.

Abstract: An offshore wind farm (1) comprising a number of wind turbine generator arrays (5). Each wind turbine generator array (5) comprises an array transformer (6) and a number of wind turbine generators (6) connected, in use, electrically to the array transformer (8). The array transformer (8) is associated with one wind turbine generator (6) among said number of wind turbine generators (6) and each array transformer (8) is, in use, electrically connected a bus bar (17) on the offshore substation (4). The bus bar (17) on the offshore substation is, in use, directly connected electrically to an export cable (3) or an HVDC converter (18).

Abstract: Disclosed is a method of manufacturing an offshore substation topside for assisting in transporting electricity generated by an offshore wind farm arranged at a first location to land. The offshore substation topside comprising a first deck and a first block arranged on the first deck, wherein the first block comprises a plurality of modules including a first module and a second module, each module of the plurality of modules comprises one or more standardized sections selected from a group of standardized section, each standardized section comprises a self-supporting frame. The first module of the plurality of modules is manufactured at a second location, the first module and the second module of the plurality of modules having at least one standardized section in common, and the plurality of modules being assembled into the first block at a location remote from the second location.

Abstract: Methods for black-starting an electrical grid (2) are described herein. For example, a method comprises disconnecting the wind farm (1) from the grid at a first location, said first location being located between the electrical grid (2) and the energy storage (16) with the associated converter (17), energizing the AC export cable (12) using said energy storage (16) and the associated converter (17), energizing at least one part of the wind farm electrical infrastructure via said export cable (12) using said energy storage (16) and the associated converter (17), re-establishing energy supply to said wind farm electrical infrastructure by said wind turbine generators (3, 4), and reconnecting the wind farm (1) to said electrical grid (2) at said first location.

Abstract: Disclosed is a support system (100) for supporting an offshore wind turbine comprising a steel support structure (180) for supporting the offshore wind turbine and a cathodic protection system (101-105) configured to protect the steel support structure from corrosion. The cathodic protection system comprising one or more galvanic anodes (101) arranged in connection with the steel support structure and a first electrical connection (102) electrically connecting the one or more galvanic anodes to the steel support structure. This allows the steel support structure to be polarized by the electrons flowing from the one or more galvanic anodes to the steel support structure. The first electrical connection is an adaptable electrical connection that can change the rate of electrons flowing from the one or more galvanic anodes to the steel support structure and thereby change the polarization of the steel support structure.

Abstract: Disclosed is a guiding device for guiding an elongated element such as a cable or a pipe from the exterior into a hollow interior of a support element, the support element being a support element for supporting an offshore structure and being at least partly submerged in water, wherein the guiding device comprises; a tube having a first opening at a first end for facing the exterior and a second opening at a second end opposite to the first end for facing the hollow interior of the support element. The guiding device is configured to allow water to flow into the first opening and out of the second opening of the tube, and substantially prevent water from flowing into the second opening and out of the first opening whereby the guiding device allows water to enter the hollow interior of the support element but not exit the hollow interior.

Abstract: Apparatus for performing offshore underwater surveys, said apparatus comprising an equipment pod (6) mounted on a pole (7). The pole (7) is mounted in a movable manner on a carrier (15). The apparatus comprises means for attaching said carrier (15) to the hull (2) of a vessel (1) in a releasable manner.