A negative pressure aeration system, created by atmospheric siphon pressure above the waterline and mechanical pump suction below the waterline, which impedes the growth of organic matter. A waterfall flow in vacuum effect is created within a system that aerates the raw water as it falls through the air chamber of the system housing, which assists in the suppression of organic growth by reducing the contact surface area within the system. A chemical tank allows an anti-fouling chemical to be added to the entire system and a power supply allows flexible electrodes driven by a vacuum to create a further anti-fouling benefit throughout the components of the system.

A sea water intake riser system for a floating production unit, including a caisson having a through-opening in a bottom side and being connectable to an upper end of a riser pipe; a lift pump inside the caisson and having an inlet at a vertical distance with a predetermined minimum submergence for pumping cold water from the caisson up to the floating production unit for use as cooling medium, wherein the sea water intake riser system includes at least two caissons, having a height substantially equal to a vertical height of a hull of the floating production unit and including an open top side; each caisson extending from a predetermined minimum distance from the bottom side of the hull up to at least the water-line during use and wherein a sump tank is located between the bottom side of the hull and the at least two caissons.

A drive for a boat includes a housing that is arranged underwater during operation, and that houses an electric motor that drives a propeller. The housing includes a cooling section that includes a coolant duct.

A slide-in structural interface between a Sea Water Intake Riser (SWIR) and a floating unit hull or sump tank bottom plate permits a pull-in, diver-less installation of the SWIR. Certain embodiments include an integrated, easily maintainable strainer.

A drive for a boat includes a housing that is arranged underwater during operation, and that houses an electric motor that drives a propeller. The housing includes a cooling section that includes a coolant duct.

Systems and methods are presented of operating a seawater system to reduce fouling. The seawater system may be installed in a waterborne vessel. A method comprises establishing suction in a first manifold, drawing seawater through a first manifold port, and discharging seawater through a second manifold simultaneous to drawing fluid through the first manifold port. The first manifold is in fluid communication with a first manifold port defined by a cover assembly. The second manifold is in fluid communication with a second manifold port defined by the cover assembly. The cover assembly is positioned in contact with a body of seawater.

A method for operating a cooling system of a ship, having a sea water part system with a sea water pump (14a, 14b) and at least one first cooling water circuit. The first cooling water circuit includes a bypass in a heat exchanger coupling the sea water part system and the first cooling water circuit and a control valve. A position of the control valve determines a cooling water proportion of the first cooling water circuit that is conducted via the heat exchanger and a cooling water proportion of the first cooling water circuit that is conducted via the bypass. The position of the control valve is controlled such that an advance cooling water temperature corresponds to a set point value. The rotational speed of the sea water pump is controlled based on the position of the control valve.

Systems and methods are presented of operating a seawater system to reduce fouling. The seawater system may be installed in a waterborne vessel. A method comprises establishing suction in a first manifold, drawing seawater through a first manifold port, and discharging seawater through a second manifold simultaneous to drawing fluid through the first manifold port. The first manifold is in fluid communication with a first manifold port defined by a cover assembly. The second manifold is in fluid communication with a second manifold port defined by the cover assembly. The cover assembly is positioned in contact with a body of seawater.

A system for providing raw water for cooling of one or more Auxiliary Systems of a Luxury Boat, when the Luxury Boat is in Temporary Dry Storage involves a pump, external to the Luxury Boat, a controller coupled to the external pump and a sensor coupled to a boat-based pump controller on the Luxury Boat. The sensor is configured to sense a trigger signal from the boat-based pump controller indicating that raw water is to be pumped to the one or more Auxiliary Systems and send a signal to the controller that will cause the controller to start the external pump pumping raw water to the Luxury Boat. A related method for controlling raw water supply to one or more Auxiliary Systems of a Luxury Boat, when the Luxury Boat is in Temporary Dry Storage is also described.

Systems and methods are presented of operating a seawater system to reduce fouling. The seawater system may be installed in a waterborne vessel. A method comprises establishing suction in a first manifold, drawing seawater through a first manifold port, and discharging seawater through a second manifold simultaneous to drawing fluid through the first manifold port. The first manifold is in fluid communication with a first manifold port defined by a cover assembly. The second manifold is in fluid communication with a second manifold port defined by the cover assembly. The cover assembly is positioned in contact with a body of seawater.