The invention provides an anti-fouling lighting system (1) configured for preventing or reducing biofouling on a fouling element (1201) of an object (1200). The fouling element (1201) is during use at least partly moving and at least temporarily exposed to water. Fouling is prevented by irradiating an anti-fouling light (211) onto said fouling element (1201). The anti-fouling lighting (1) system comprises at least one laser light source (2) configured to generate the anti-fouling light (211) and to provide said anti-fouling light (211) to said fouling element (1201) during use, wherein the system (1) is arranged such that during use the fouling element (1201) at least partly moves with respect to the laser light source (2).

A wind generator for sailboats including a mast (A) provided with crosstrees (C), including: at least one wind generator (1) provided with a distribution of blades (2) arranged to rotate integrally with a shaft (6) of axis (a) in response to receiving a wind flow in an active direction (v) incident to the blades distribution; an electric generator (3) operatively connected to the generator (1) for converting the rotation of the blades (2) into electricity, comprising structure (22, 41) for fixing the generator (1) to a crosstree (C), and with the blades (2) being movable from an open operating position (P1) of maximum incidence of wind flow (F) to a closed non-operating position (P2) of minimum obstruction.

A kite driven watercraft power generating system which includes at least one operative location defined on the watercraft, at least one inoperative location defined on the watercraft, a plurality of kite base stations mounted displaceably about the watercraft and, an orientation subsystem for displacing each of the plurality of kite base stations between the at least one operative, and, the at least one inoperative locations, respectively, wherein each of the plurality of kite base stations is further configured to orientate its respective kite in a wind harvesting and energy generating mode when located in the at least one operative location, and, in a kite retraction mode, when located in the at least one inoperative location.

An intentional fluid manipulation apparatus (IFMA) assembly with a first thrust apparatus that imparts a first induced velocity to a local free stream flow during a nominal operation requirement. The first thrust apparatus creates a streamtube. A second thrust apparatus is located in a downstream portion of the streamtube. The second thrust apparatus imparts a second induced velocity to the local free stream flow. The second induced velocity at the location of the second thrust apparatus has a component in a direction opposite to the direction of the first induced velocity at the location of the second thrust apparatus.

The present disclosure relates to a stand-alone buoy with a seawater battery, which includes a main body formed to have a predetermined buoyancy so as to float on seawater and provided with a seawater space therein and an inlet formed to introduce the seawater into the seawater space, a position notification part installed on the main body and configured to notify a user of a position of the main body, a solar cell part installed on the main body and configured to generate electricity using sunlight, and a seawater battery unit installed in the seawater space to be submerged in the seawater introduced into the seawater space and configured to react with the seawater to store the electricity provided from the solar cell part and to provide the stored electricity to the position notification part so as to operate the position notification part.

A method, and a support vessel for use in the system. The system can in various embodiments include: a carrier vessel for carrying fluid hydrocarbon cargo across sea, the hydrocarbon cargo to be loaded into at least one cargo tank of the vessel; a support vessel; VOC recovery means on the support vessel for recovering volatile organic compounds, VOCs, the VOCs being produced from the cargo tank in loading the cargo tank, in use; and at least one hose extending between the carrier vessel and the support vessel for communicating gas having volatile organic compounds, VOCs, through the hose from the cargo tank of the carrier vessel to the VOC recovery means on the support vessel.

A mobile offshore drilling unit includes a plurality of electric thrusters to dynamically position the drilling unit, and a microgrid electric power generation system for providing power to the plurality of electric thrusters, the microgrid electric power generation system including at least one combustion generator electrically coupled to a main electric power bus and at least one thruster electric power system, the thruster electric power system including a thruster electric power bus, an additional electric power bus connected to the thruster electric power bus via an interface device, and a circuit breaker electrically coupling the additional electric power bus to a main electric power bus for isolating the thruster electric power bus from the main electric power bus in case of loss of power on the main electric power bus.

Sun heats dark continents more than reflective oceans. Air moves onshore from high pressure to low. Creating wind: powering weather and storms—“hurricane-in-a-box-on-water” principles producing electricity in a marine vessel, providing Green Technology for Marine Transportation. Captured and recovered heat, offset by loss of heat, creates differential pressure conditions across multiple rotary engines. Night and day, a working fluid moves from high pressure to low; powering alternators, batteries, domestics, and in-hull electric drive trains, in a unique, lightweight exoskeleton dome shell design vessel. Disclosed vessel design advantages include: high energy collection and living space to vessel length ratio; high strength to weight ratio; high carrying capacity, downwind sailing while producing electricity; modular fabrication and shipping; and sustained hull speed in a vessel harvesting energy from the environment. The longer the vessel: the more it carries: the greater the hull speed: the faster it goes.

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.

According to an example aspect of the present invention, there is provided a marine propulsion system (1) comprising a first portion (4) and a second portion (5) of a set of movable foils, a movement mechanism (2) coupled to the first portion (4) and the second portion (5) of the set of movable foils and configured to simultaneously control a motion of the first portion (4) and the second portion (5) of the set of foils along a closed first trajectory (6) comprising a first direction (17) and a second direction (18) which is different than the first direction (17), and a pitch mechanism (3) coupled to the first portion (4) and the second portion (5) of the set of movable foils and configured to control a pitch angle (π) of the first portion (4) and the second portion (5) of the set of movable foils, and wherein the pitch angle (π) of at least a part of the second portion (5) of the set of foils is dependent on an incoming fluid flow (v.sub.x), the motion of the second portion (5) of the set of foils, and a flow (v.sub.ind) induced by at least a part of the first portion (4) of the set of foils.