A rotary cleaning apparatus for underwater cleaning including a housing, a battery, a motor and a flexible hub system. The flexible hub system includes a toroidal brush system coupled to a circular centrifugal pump assembly. The flexible hub system includes a flexible hub allowing the flexible hub system to bend out of plane. When the flexible hub system is rotated underwater at a curved surface, the brush system cleans the surface while the suction of the centrifugal pump assembly flexes the flexible hub system to evenly contact the surface.

A load arrangement is provided for powering a load on a surface (30) of a marine structure (50) exposed to a liquid (10). The load arrangement has a carrier (100) and a conductor arrangement (110) arranged on the surface of the marine structure and coupled to one pole of a power source (1). The other pole is coupled to the liquid. The carrier has a back surface (102) to cover part of the conductor arrangement and the surface (30) of the marine structure. A load (20) in the carrier receives supply current from the power source via a front electrode (130) arranged for coupling to the liquid, and a back electrode (120) at the back surface arranged for coupling to the conductor arrangement. The load may be an UV-C LED for emitting anti-fouling light.

A load arrangement is provided for powering a load on a surface (30) of a marine structure (50) exposed to a liquid (10). The load arrangement has a carrier (100) and a conductor arrangement (110) arranged on the surface of the marine structure and coupled to one pole of a power source (1). The other pole is coupled to the liquid. The carrier has a back surface (102) to cover part of the conductor arrangement and the surface (30) of the marine structure. A load (20) in the carrier receives supply current from the power source via a front electrode (130) arranged for coupling to the liquid, and a back electrode (120) at the back surface arranged for coupling to the conductor arrangement. The load may be an UV-C LED for emitting anti-fouling light.

Various aspects provide for parking an apparatus in a parking position. A parking position may be a configuration of an apparatus that minimizes damage resulting from extended exposure during periods of inactivity. An apparatus may comprise a marine apparatus, which may be configured to be disposed in an environment comprising saltwater, salty air, brackish water, freshwater, and the like. An apparatus may comprise a propulsion system (e.g., for a ship) and/or a steering system. Some aspects include a water jet based propulsion system having a scoop and a nozzle operable to redirect the water jet, providing a range of forward/backward and port/starboard thrusts. A control cylinder and/or a linkage may be parked in a configuration that segregates damage incurred during periods of inactivity to portions of an apparatus not needed for normal operation.

Various aspects provide for parking an apparatus in a parking position. A parking position may be a configuration of an apparatus that minimizes damage resulting from extended exposure during periods of inactivity. An apparatus may comprise a marine apparatus, which may be configured to be disposed in an environment comprising saltwater, salty air, brackish water, freshwater, and the like. An apparatus may comprise a propulsion system (e.g., for a ship) and/or a steering system. Some aspects include a water jet based propulsion system having a scoop and a nozzle operable to redirect the water jet, providing a range of forward/backward and port/starboard thrusts. A control cylinder and/or a linkage may be parked in a configuration that segregates damage incurred during periods of inactivity to portions of an apparatus not needed for normal operation.

An electric current supply system (20) is designed to be at least partially submerged in an electrically conductive liquid during operation thereof, and comprises at least one electrically conductive component (21, 22, 23, 24) enveloped in liquid-tight material (40). The component (21, 22, 23, 24) comprises sacrificial material that is capable of reacting electrochemically with the liquid. Further, the component (21, 22, 23, 24) comprises at least one gas trap portion (50) at which the sacrificial material occupies a space in the liquid-tight material (40) that is thereby defined with a gas trapping shape. If, in case of damage to the system (20) in an actual submerged state thereof, the component (21, 22, 23, 24) gets exposed to the liquid, it is achieved that an electrochemical reaction occurring at the exposed area of the component (21, 22, 23, 24) and an outflow of electric current to the liquid are stopped.

The present invention relates to a marine structure comprising an external surface (50), a load (2, 20, 21, 22, 25) comprising a light source, said load having a first load terminal (2a) and a second load terminal (2b) adapted to be powered by an AC power source (1), said AC power source (1) having a first AC terminal (1a) electrically connectable to the surface (50) and a second AC terminal (1b), a first electrode (3) electrically connected to the first load terminal (2a), and a dielectric layer (4). The first electrode (3) and the dielectric layer (4) are arranged to form, in combination with the surface (50), a capacitor (6) for capacitive transmission of electrical power between the first electrode (3) and the surface (50). The second AC terminal (1b) and the second load terminal (2b) are arranged to be electrically connected to an external electrically conductive element (10, 11) insulated from the surface (50). The first load terminal (2a) is electrically insulated from the second load terminal (2b).

The present invention relates to a marine structure comprising an external surface (50), a load (2, 20, 21, 22, 25) comprising a light source, said load having a first load terminal (2a) and a second load terminal (2b) adapted to be powered by an AC power source (1), said AC power source (1) having a first AC terminal (1a) electrically connectable to the surface (50) and a second AC terminal (1b), a first electrode (3) electrically connected to the first load terminal (2a), and a dielectric layer (4). The first electrode (3) and the dielectric layer (4) are arranged to form, in combination with the surface (50), a capacitor (6) for capacitive transmission of electrical power between the first electrode (3) and the surface (50). The second AC terminal (1b) and the second load terminal (2b) are arranged to be electrically connected to an external electrically conductive element (10, 11) insulated from the surface (50). The first load terminal (2a) is electrically insulated from the second load terminal (2b).

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.

The invention provides an element comprising: an electrical component, an optical medium comprising medium material comprising a silicone transmissive for one or more of UV radiation and visible radiation, wherein the electrical component is embedded in the optical medium, an electrical connector for functionally coupling the electrical component external to the optical medium, wherein the electrical connector is embedded in the optical medium over at least part of its length; and a water barrier at least partly embedded in the optical medium and configured to enclose at least part of the electrical connector.