The fully patented 4breadyR device has been developed using the principle of ultrasonic wave to inhibit the growth of marine organisms such as cirripeds, mussels and barnacles. The device utilizes a microprocessor control unit in combination with non through-hull ultrasonic transducers secured to the inside of the hull. The number of transducers required varies according to the size of your boat, with each covering about 6 meters diameter. The number of transducers varies with the size of the vessel, with an operating coverage for each transducer of about 6 m in diameter.The instrument is supplied complete with two transducers and is therefore suitable for vessels up to 12 m. The main advantages derived from the use of this device are:-Fuel saving deriving from the hull cleaning- Fuel savings resulting from the cleaning of the hull;- Complete elimination of the use of harmful substances for the marine environment.