Systems and methods for reducing scouring around piles are described. The system includes a pile and an enclosure. The pile has a maximum cross-sectional dimension, D.sub.p. The enclosure is circumferentially disposed around the pile, the enclosure having a first end proximate a surface of a seabed; a second end distal the surface of the seabed; and a maximum cross-sectional dimension, D.sub.e, wherein D.sub.e is at least 1.25*D.sub.p.

Ladder cleaning device, particularly for use on ladders mounted on offshore installations, wherein the ladder cleaning device comprises: means for guiding and moving the device along the ladder means for detecting a ladder rung means for cleaning at least the detected rung.

A leg cutting system with a leg support clamp 2 with a height for maintaining a structural integrity of the leg 1 during and after the leg 1 is cut. The system includes at least two leg support clamp parts joined in at least one clamp structure joint 11 with releasable mechanical fasteners for joining or releasing the at least two leg support clamp parts along the at least one clamp structure joint. A wire saw 6 with a wire saw support frame 7 and longitudinal saw tracks 16 for longitudinal displacement of the sawing wire along said longitudinal saw tracks 16 can be fixed to the leg support clamp. A wire replacement unit 9 with a plurality of sawing wires with a joint allowing the wires to be joined is located adjacent the wire saw. The embodiment(s) furthermore relates to a leg support clamp.

An inspection system may be deployed as part of a routine crew transfer diving (CTV) or service operation vessel (SOV) deployment to perform inspections for analyses which can be conducted while carrying out other inspection tasks. A marinized digital detector array and betatron source may be maneuvered proximate a first detector plate, which can be of a plurality of detector plates and a first exposure generated at the first detector plate which is then used to aid in generating one or more images comprising each such exposure. The images are then reconstructed to identify defects in the grout.

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.

The present invention generally relates to a continuous monitoring system and method for monitoring the loads in a support leg of an offshore drilling rig through a remote unit mounted to the climbing pinion shaft of a jacking drive system when the brake is engaged.

An offshore foundation structure includes a jacket portion having a plurality of struts interconnected in a framework-like manner, and a receiving means for a tower shaft of a wind power installation. The platform is arranged at least partially in the interior of the jacket portion. The offshore foundation structure also has a gangway and a lift.

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.

A system including a camera configured to capture a first image of an offshore structure and a second image of the offshore structure, and a processor coupled to the camera, the processor configured to receive the first image and the second image from the camera, recognize a first visual pattern in the first image and the second image, extract pixel coordinates associated with a first position of the first visual pattern in the first image and a second position of the first visual pattern in the second image, and determine a first distance between the first position and the second position, or the first position of the first visual pattern and a first position of a second visual pattern fixably attached to the offshore structure in the first image.

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.