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).

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).

An underwater remote cleaning device includes a submersible assembly, a cleaning conduit, and a thruster conduit. The submersible assembly has an upper frame and a lower frame spaced-apart from each other and at least one vertically extending element having a first end and a second end. The first end of the vertically extending element is engaged to the upper frame and the second end of the vertically extending element is engaged to the lower frame. The cleaning conduit is disposed within the submersible assembly with an inlet for receiving a liquid and at least one nozzle disposed on the cleaning conduit for spraying the liquid. The thruster conduit is disposed within the submersible assembly with an inlet for receiving a liquid and at least one nozzle disposed on the cleaning conduit for spraying the liquid.

An underwater remote cleaning device includes a submersible assembly, a cleaning conduit, and a thruster conduit. The submersible assembly has an upper frame and a lower frame spaced-apart from each other and at least one vertically extending element having a first end and a second end. The first end of the vertically extending element is engaged to the upper frame and the second end of the vertically extending element is engaged to the lower frame. The cleaning conduit is disposed within the submersible assembly with an inlet for receiving a liquid and at least one nozzle disposed on the cleaning conduit for spraying the liquid. The thruster conduit is disposed within the submersible assembly with an inlet for receiving a liquid and at least one nozzle disposed on the cleaning conduit for spraying the liquid.

A self-cleaning and anti-adhesion apparatus for marine instruments includes an installation frame. A first end of the installation frame is fixed with an installation base, and a second end of the installation frame is movable with a screw rod. The upper end of the installation base is movable with a first rotation base. A wire netting ball used for holding a sensor is installed above the first rotation base. The wire netting ball is fixedly connected with the installation base. The top end of the screw rod is fixedly connected with a first end of the flexible connector, and a second end of the flexible connector is fixedly connected with a floating bladder. The screw rod is screwed with an inner wheel of an internal meshing ratchet mechanism, and an outer wheel of the internal meshing ratchet mechanism is fixed inside the mounting ring.

The invention relates to a method and a system for treatment of an underwater surface (S) and material removed from it at a cleaning site. The underwater surface is cleaned by a brush device (1), by which effluent containing solid matter removed from the underwater surface in connection with cleaning is conveyed to a treatment unit (5) where the effluent is subjected to separation and filtering. In a first step, the solid matter contained in the effluent is separated from the effluent in a form as unbroken as possible, immediately followed by a second step in which the effluent is precipitated. Said second step is immediately followed by a third step in which the effluent is filtered. The filtered effluent is discharged directly back to a body of water or to another clean water connection at the cleaning site. The effluent may be subjected to additional filtering and/or disinfection, if necessary.

The invention relates to a method and a system for treatment of an underwater surface (S) and material removed from it at a cleaning site. The underwater surface is cleaned by a brush device (1), by which effluent containing solid matter removed from the underwater surface in connection with cleaning is conveyed to a treatment unit (5) where the effluent is subjected to separation and filtering. In a first step, the solid matter contained in the effluent is separated from the effluent in a form as unbroken as possible, immediately followed by a second step in which the effluent is precipitated. Said second step is immediately followed by a third step in which the effluent is filtered. The filtered effluent is discharged directly back to a body of water or to another clean water connection at the cleaning site. The effluent may be subjected to additional filtering and/or disinfection, if necessary.

An anti-sedimentation system can implement a method in which a pump pumps seawater to a discharge nozzle positioned under the seawater and facing an under keel clearance of a marine vessel docked at a dock. Sediments are flowed away from the under keel clearance by the discharge nozzle discharging the seawater toward the under keel clearance.

An anti-sedimentation system can implement a method in which a pump pumps seawater to a discharge nozzle positioned under the seawater and facing an under keel clearance of a marine vessel docked at a dock. Sediments are flowed away from the under keel clearance by the discharge nozzle discharging the seawater toward the under keel clearance.

A mobile robot may include a first track located on a first side of a robot body and a second track located on a second side of the robot body. The first track and the second track may be configured to cause movement of the robot body relative to a first surface. The mobile robot may also include a crutch. The crutch may have a crutch arm extending from a magnet base, where the crutch includes a crutch magnet secured to the magnet base, where the crutch arm is rotatable relative to the robot body about an axis, and where the magnet base is fixed relative to the crutch arm such that the crutch magnet moves when the crutch arm rotates about the axis.