| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the necessity for the calculation of a hull magnetism for each section of a vessel having a complicated shape/structure, to shorten the period of time for a demagnetization process by simplifying the calculation for the hull magnet, and to increase the demagnetization performance. SOLUTION: A hull magnetism simulation form 28 is defined by estimating a hull magnetic behavior from data indicating the shape/structure of the vessel 4. The hull magnetism is calculated from the defined hull magnetism simulation form. A processing device which demagnetizes in such a manner that a magnetic variation occurring on the outside of the hull may be reduced by using a set value for a demagnetization element obtained from the hull magnetism is provided. COPYRIGHT: (C)2007,JPO&INPIT
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