| 摘要 |
A system for automatically controlling navigation of a ship, particularly a small-sized ship in which the sole crew is on board, has a radio transmitter attached to the body of the crew, a radio receiver installed on board the ship so as to receive a signal transmitted by the radio transmitter, and a control command unit connected with the output side of the radio receiver so as to control the prime mover of the ship to thereby stop the ship when the crew fell overboard. The radio transmitter is adapted to transmit a radio signal while the crew is on board the ship and stop or attenuate the signal when the crew fell overboard, while the radio receiver is adapted to transmit an output signal to the control command unit when the generation of the signal by the transmitter is stopped or when the signal is attenuated.
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