A Method and Apparatus for Wake Enlargement System have been disclosed. By using water pick ups that are mounted on a boat controlled filling of ballast tanks is possible without the use of pumps.

A floating VAWT comprising a wind turbine body having a lower body portion and an upper body portion; at least one blade attached to the upper body portion for converting wind energy to rotation of the wind turbine body; and an energy converter attached to the wind turbine body for converting the rotation of the wind turbine body to electrical energy. The energy converter comprises a first energy converter part, and a second energy converter part to be kept relatively stationary in relation to the first energy converter part. The energy converter is attached to the wind turbine body by means of a first releasable mechanical coupling between the first energy converter part and the lower body portion of the wind turbine body, and a second releasable mechanical coupling between the first energy converter part and the upper body portion of the wind turbine body.

A method of monitoring wave slam on a vessel includes measuring acceleration forces from mechanical shocks on the vessel using one or more sensors communicatively coupled to a computing unit. Generating real-time acceleration information representative of the wave slam based at least in part on the data obtained from the sensors. Generating acceleration prediction information representative of a predicted wave slam based at least in part on the generated real-time acceleration information. Presenting at least one of the generated real-time acceleration information or acceleration prediction information to an intended recipient.

Apparatus and methods to couple fuel components to a fuel tank are described. An example method includes coupling a carrier to a guide suspended in a cavity of a fuel tank, where the guide extends in a longitudinal direction between a first end of the guide adjacent a first side wall of the fuel tank and a second end of the guide adjacent a second side wall of the fuel tank opposite the first side wall, and moving the carrier along the guide between the first end of the guide and the second end of the guide.

In an offshore system having a floating vessel, a turret within a hull opening, and a bearing assembly including a support row assembly axially transferring the weight of the turret to the vessel and allowing the vessel to weather vane about the turret, a method and arrangement for in situ remediation of a damaged support row assembly. An outer upper ring is removed from an outer lower ring and a support ring is installed on the outer lower ring. A lower race and support rollers of a remedial support row assembly are installed on the support ring. A reaction ring is positioned above the support ring and connected to an inner ring secured to the turret. The inner ring is axially displaced relative to the outer lower ring and the turret axial loading is transferred to the remedial support row assembly between the support ring and the reaction ring.

A device (100) has surfaces (21, 22, 23, 24) and an anti-biofouling system (10) comprising at least one light source (11, 12) for performing an anti-biofouling action on at least a majority of the surfaces, the at least one light source (11, 12) being adapted to emit rays of anti-biofouling light. The surfaces (21, 22, 23, 24) are configured relative to each other and to the at least one light source (11, 12) such that during operation of the at least one light source, at least a majority of the surfaces (21, 22, 23, 24) is free from shadow with respect to the rays of anti-biofouling light from the at least one light source (11, 12), wherein it may be possible for the rays of anti-biofouling light to reach the surfaces (21, 22, 23, 24) by skimming along the surfaces (21, 22, 23, 24).

A catamaran lifting apparatus is disclosed for lifting objects in a marine environment. The apparatus includes first and second vessels that are spaced apart during use. A first frame spans between the vessels. A second frame spans between the vessels. The frames are spaced apart and connected to the vessels in a configuration that spaces the vessels apart. The first frame connects to the first vessel with a universal joint and to the second vessel with a hinged connection. The second frame connects to the second vessel with a universal joint and to the first vessel with a hinged or pinned connection. Each of the frames provides a space under the frame and in between the barges that enables a package to be lifted and/or a marine vessel to be positioned in between the barges and under the frames. In this fashion, an object that has been salvaged from the seabed can be placed upon the marine vessel that is positioned in between the barges and under the frames.

This invention relates to a pipe-like appendage for a sharp-edged pontoon of an offshore vessel, a pontoon structure comprising the pipe-like appendage and a method of converting a sharp-edged pontoon into a pontoon comprising at least one rounded-edge.

Disclosed is a mount for attaching objects, like cameras and bindings to the surfaces of a surfboard. Further disclosed is related methods of fabricating or retrofitting a surfboard with said mount. The more specific details of the disclosed mount and related methods are described in connection with the figures.

A method of estimating a frictional resistance of a ship bottom coating film, the method including measuring any one of Rz (maximum height roughness), Rc (mean height of roughness profile elements), Ra (arithmetic mean roughness), Rq (root mean square roughness) and RZJIS (ten-point mean roughness) as a roughness height R in a mean length RSm of roughness profile elements in the range of 2,000 to 10,000 m according to JIS B 0601:2001 (ISO4287:1997) on a coating film formed by applying a ship bottom coating paint on a substrate and calculating a frictional resistance increase rate FIR (%) from a mirror surface by the following formula (1), wherein coefficient C is a constant depending on the kind of the roughness height R and a frictional resistance testing method, and is previously determined in such a manner that plural ship bottom coating films each having different roughness are subjected to a roughness measurement and a frictional resistance test in a definite evaluation length, and then the coefficient C is determined by the formula (1) using the roughness height R, the mean length RSm of roughness profile elements and the frictional resistance increase rate FIR (%), which have been measured.