| 摘要 |
PROBLEM TO BE SOLVED: To reverse a monochromatic display of a liquid crystal display part (a liquid crystal device 71) when a transportation means transfers from a normal state to an abnormal state, when a case where the normal operation of the transportation means is performed and a case where the necessity of rapidly reducing speed of the transportation means or rapidly changing the direction of the transportation means is generated are discriminated as the normal state and the abnormal state, respectively, in the transportation means (a jet-propelled boat 10) provided with the liquid crystal display part for displaying operation information. SOLUTION: The abnormal state in the transportation means can be sensuously and directly notified to an operator. As a result, the abnormal state in the transportation means becomes easy to be recognized.
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