Offshore station, having a metal structure, wherein the metal structure (4) has watering regions (6) which are exposed to natural watering (22), wherein the metal structure (4) has sheltered regions (8) which are exposed to natural watering (22) only to a limited extent, if at all, having at least one cleaning device (14), wherein the cleaning device (14) has at least one collecting device (16), at least one line system (18) and outlet openings (20), wherein the collecting device (16) is designed for collecting rainwater (22), wherein the line system (18) is connected to the collecting device (16) and is designed for distributing the rainwater (22), and wherein the outlet openings (20) are designed for flushing the sheltered regions (8) with rainwater (22).

Exemplary embodiments of the present disclosure directed towards a non-destructive device configured to survey, inspect, and clean marine growth, comprising: manipulators comprising adjustable clamps configured to move or rotate 360 degrees for holding at least one cylindrical shape of an offshore structure; a plurality of hydraulic rams configured to hydraulically operate and control the plurality of manipulators; a central part comprising a camera and light emitting diodes configured to provide visual aid to a user and a lidar configured to determine ranges by targeting the offshore structure with a laser and measure the time for reflected light to return to a programming logic circuit board; probes configured to survey angular and distance measures of objects around the offshore structure, and inspections of safety and security of the offshore; and a high pressure jetting nozzle configured to clean the marine growth and rotary arms of the offshore structure.

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 carriage arranged to walk along an elongate member while carrying a payload includes individually-operable clamps that are spaced axially along a common longitudinal axis. An axially-extensible frame connects the clamps. At least one of the clamps is attached to the frame via a rotationally-displaceable coupling for relative angular movement between that clamp and the frame about the longitudinal axis. The carriage can carry the payload to a subsea worksite by opening and closing the clamps to release and grip the elongate member in a sequence that includes moving the leading clamp forward when the leading clamp is open and moving the trailing clamp forward when the leading clamp is closed. At the worksite, installation force can be applied to the payload in a forward direction by moving the leading clamp forward when the leading clamp is open and the trailing clamp is closed.

A monitoring system for use in a marine riser system coupled to a rig vessel includes one or more subsea inertial measurement units adapted for mounting to a lower end of a riser, an LMRP, or both. The one or more subsea inertial measurement units may acquire time series data of inclination and acceleration. The one or more subsea inertial measurement units may transmit, to a vessel transceiver, frequency data computed from the time series data, low-pass filtered values of the time series data, or both. The monitoring system includes a surface processing unit that is in communication with the vessel transceiver. The surface processing unit may be programmed to compute, for example, fatigue along the marine riser system, the difference between the inclination of the lower end of the riser and the inclination of the LMRP, or both, by applying predetermined functions to the transmitted data.

Integrated probes and probe systems suitable for attachment to a robotic arm of a remotely operated vehicle are disclosed. The probes and probe systems serve to perform cleaning operations and both cathodic protection (CP) voltage measurements and ultrasonic testing (UT) thickness measurements at an underwater surface. The cathodic protection measurement system includes one or more electrically conductive legs that extend outwardly from the probe. These legs are arranged about a cleaning tool and an ultrasonic sensor. When the integrated probe contacts the underwater surface, at least one leg contacts the surface, thereby providing a desired distance between the probe and the underwater surface for efficient cleaning and UT inspection. The underwater surface can be cleaned and CP and UT measurements can all be performed using a single, integrated probed during a single operation, without having to reposition the probe.

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 wind turbine erected in a body of water includes a generator, a foundation, a nacelle, a tower having a first end mounted to the foundation and a second end supporting the nacelle, an electrolytic unit arranged above a water level and electrically powered by the generator to produce hydrogen from an input fluid, in particular water, and a fluid supply assembly for supplying the input fluid from a fluid inlet arranged below the water level to the electrolytic unit by means of a fluid connection, wherein the fluid supply assembly includes a cleaning unit configured to clean a build-up formed along an area extending through the inner part of at least a part of the fluid connection or formed at the fluid inlet.

The system enables remote inspection of an object, such as an underwater steel pile, using a plurality of video cameras. The cameras are positioned on a frame along a plane substantially perpendicular to the axis of the object and spaced apart so as to enable inspection of the circumference of the object. Moving the frame along the surface of the object enables a video of the entire surface area of the object to be made. A plurality of wheels are mounted to the frame to provide rolling contact with the surface of the object and to cause the cameras to remain a fixed distance from the surface of the object. A plurality of springs are mounted between the frame and the wheels to further ensure smooth movement of the frame. A plurality of lights mounted to the frame illuminate the surface of the object during the inspection process.

A maintenance device for maintaining an offshore wind turbine, the device being suitable for pressing against and traveling along the pylon of the wind turbine. The device includes a maintenance platform including a preferably U-shaped notch so that the pylon of the wind turbine can penetrate into said notch and travel means for causing the maintenance platform to travel along the pylon of the wind turbine. The travel means comprising a plurality of motor-driven crawlers arranged under said maintenance platform so that when the pylon of the wind turbine is placed in said notch with the vertical longitudinal axis of the pylon of the wind turbine perpendicular to the work plane of said maintenance platform.