A bio-fouling transducer comprising: a housing comprising: a diaphragm a conduit attached to the diaphragm; and a cap attached to the conduit; a transducer element attached to the diaphragm within the conduit; a series of electrical connections electrically connected to the transducer; and at least one gasket attached to the transducer and in contact with the conduit.

A bio-fouling transducer comprising: a housing comprising: a diaphragm a conduit attached to the diaphragm; and a cap attached to the conduit; a transducer element attached to the diaphragm within the conduit; a series of electrical connections electrically connected to the transducer; and at least one gasket attached to the transducer and in contact with the conduit.

Manual, automated, or semi-automated articulating arm programmable tank cleaning nozzle systems, devices and methods for providing safe and efficient methods for removing paint, rust, scale, debris, and contaminants as well as methods to apply new coatings to tanks. A hydraulically controlled articulating arm can have up to 11 or more degrees of freedom and a working envelope ranging from approximately 10approximately 10approximately 10 up to approximately 50approximately 50approximately 50. Modularity and light weight components allow quick setup with minimal manpower, and therefore, make relocation in confined tanks feasible. Simplified programming with scanning methods can aide in quick generation of toolpaths. Dust free blasting techniques can be employed, making the operation safer, cleaner, and more efficient. Surface coatings can be applied with the same device further increasing efficiencies. The systems, devices and methods can work in the presence of flammable vapors and dust.

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.

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.

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.

One or more spray nozzles are positioned in the ballast tanks of watersports boat to allow application of a hot water spray to the internal surfaces thereof. A water conduit leading between the spray nozzles and a hull connection facilitates supply of water thereto. A pump and heater can be provided on the watersports boat connected in the water conduit to produce the hot water for decontamination onboard. A controller can be used to automate the decontamination regimen.