A wireless remote control system enables precise control of a yacht, or other vessel, from virtually any point on the yacht. A hand-held transmitter includes various switches for controlling the engines, thrusters, and/or anchor winch. A receiver, mounted on the yacht, receives signals from the transmitter. The receiver generates outputs that are connected to the existing electronic controls of the yacht. Thus, the receiver is connected in parallel with the conventional electronic controls of the yacht, and the system acts in addition to, and not instead of, the conventional control system. The system can thus be installed on existing vessels without modification of such vessels. An acoustic alarm signal is generated by the receiver when radio communication between the transmitter and receiver is severed.