A pile maintenance method, system, and apparatus including a shell configured to be opened and closed longitudinally such that the shell forms a chamber between a length of a pile and an inner surface of the shell when the shell is closed around the pile, at least one fixing member configured to fix the shell to the pile such that the shell is substantially centered on the pile, at least one sealing member provided proximate a bottom of the shell and configured to form a substantially watertight seal at a bottom of the chamber, a plurality of nozzles provided inside the shell and configured to spray one or more media onto the pile, and a drain outlet provided proximate the bottom of the shell and configured to drain contents from the chamber formed by the shell.

A wind turbine tower is supported on a transition piece that connects the tower to a foundation and that defines a space beneath the lower end of the tower. Electronic components positioned within a removable module in the lower portion of a wind turbine tower may be removed through a lower end of the tower for service or replacement.

An offshore platform device comprising a platform and a docking device which has a vertically oriented longitudinal axis (L) and is designed to be raised along its longitudinal axis (L) relative to the platform (3) into a transport position and to be lowered into an operational position, the docking device (4) having at its lower end at least one docking point (8a, 8b, 8c, 8d) which is accessible from a boat (11) in the operational position.

An offshore wind turbine, having a supporting structure, having a nacelle, having a rotor, having an interior space, having at least one access opening, and having a means of ascent, such as a ladder, a staircase or the like, wherein the supporting structure has a tower and a foundation structure, wherein the tower supports the nacelle and the rotor, wherein the access opening is configured as an access for people to the interior space, wherein the means of ascent is arranged in the interior space, wherein the means of ascent is assigned to the access opening, and wherein no external work platform is arranged between the foundation structure and the access opening, as viewed along a vertical extent of the supporting structure.

The present invention provides a self-positioning system of a deepwater underwater robot of an irregular dam surface of a reservoir, including cross reflection metal plates arranged on the irregular dam surface, and an underwater robot provided with a control motherboard, a water level indicator and a sonar system, wherein the water level indicator and the sonar system are respectively connected with the control motherboard, and the control motherboard is connected with a computer via a cable. The cross reflection metal plate has known coordinates and has four quadrants. A sonar signal emitted by the sonar system is reflected by the cross reflection metal plate to generate sonar reflection signals of four quadrants, and the sonar signals in the effective quadrants correspond to known coordinate parameters of the cross reflection metal plate so as to obtain the horizontal distance between the underwater robot and the irregular dam surface. The water level indicator is used for calculating the vertical position of the underwater robot. The computer calculates accurate positioning of the underwater robot according to the horizontal position and the vertical position. The present invention has the beneficial effects of being able to accurately obtain the positioning coordinates of the underwater robot in the deepwater of the irregular dam surface of the reservoir.

An offshore wind turbine support structure monitoring system and operating method are disclosed, comprising an offshore wind turbine, at least one state detection module, a data acquisition module, a data storage module, a network transmission module and at least one client. Thus, the maintenance of offshore wind turbines can be monitored directly and instantly to estimate the maintenance period, adjust the optimal operation and maintenance strategy, and save the cost.

A rotating grooming brush comprising a brush hub having grooming elements and shroud elements, and method for grooming a surface having an unwanted material thereon. The elements extend from the brush hub and may be positioned near its outer periphery. The elements may be grooming elements forming an array and shroud elements forming a shroud array. A rigid or elastomeric shroud extending from the brush hub surface may optionally be included about the edge of the brush hub, to the outside of the grooming elements. Rotation of the grooming attachment brush causes a low pressure region to build in the central area of the brush. This low pressure region creates a resulting force that forcefully attracts the grooming attachment brush to the surface to be groomed. The resulting force is controlled by the diameter of the brush hub, arrangement, of the elements and the speed of rotation.

A cleaning device that passively self-adjusts to improve biofoul removal across curved, non-uniform, or irregular underwater surfaces. The cleaning device includes a motor, one or more shafts coupled to the motor and coupled to one another via at least one universal joint, and a cleaning mechanism for removing biofoul from the target surface. The cleaning device includes an alignment mechanism that restricts the cleaning mechanism's movement to improve biofoul removal. The alignment mechanism can include bearings, spring components, dampening material, adhesion components, floatation objects, or a combination thereof.

A method of elevating the deck area of a marine platform (e.g., oil and gas well drilling or production platform) utilizes a specially configured sleeve support to support the platform legs so that they can be cut. Once cut, rams or jacks elevate the platform above the cuts. The sleeve support is then connected (e.g., welded) to the platform leg and becomes part of the structural support for the platform. In one embodiment, two sleeves are employed. In another embodiment, the jacks or rams elevate in two stages including a first stage wherein one sleeve elevates and the other sleeve does not elevate and a second stage wherein both sleeves elevate together.

An offshore well-processing system includes a mobile offshore drilling unit and a remote well-processing device configured to be positioned on an offshore platform different from the mobile offshore drilling unit, the mobile offshore drilling unit defining at least one well centre and comprising at least one primary drill rig including at least one drill floor and at least one hoisting system for raising and lowering tubular equipment through the at least one well centre from/into a well in the seafloor. The mobile offshore drilling unit and the remote well-processing device are configured to be operationally coupled to each other; and the mobile offshore drilling unit is configured to assist in performing concurrent well-processing tasks on respective wells, including the first well processing task performed by the remote well-processing device on a first well and a second well-processing task concurrently performed by the offshore well-processing system on a second well.