| 摘要 |
PROBLEM TO BE SOLVED: To provide a demagnetizer of a ship capable of reliably performing the compensatory neutralization of the hull magnetism by correctly grasping the magnetic state in a vicinity of a hull. SOLUTION: The demagnetizer of the ship comprises a demagnetizing coil equipped on a hull, a demagnetizing current control unit capable of performing the compensatory neutralization of the hull magnetism by controlling the electric current to the demagnetizing coil, a non-magnetic underwater navigating body which is connected by wires to the demagnetizing current control unit and arranged outside the hull, and a magnetic sensor provided on the underwater navigating body to acquire information on the external magnetic field. The demagnetizing current control unit controls the electric current to the demagnetizing coil so as to perform the compensatory neutralization of the hull magnetism based on information on the external magnetic field acquired by the magnetic sensor. COPYRIGHT: (C)2007,JPO&INPIT
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