| 摘要 |
<p>PURPOSE:To display desired wake information in the past so as to be easily visible by controlling read-out of a wake memory and a voyage various information memory by a trace key and a read-out address moving circuit, etc., and displaying a desired color. CONSTITUTION:When a trace key 36 is operated by operating a numerical key 34, a cursor key 38, etc. of an operating panel 44 and designating a sea route of specified latitude and longitude, and one point in the sea route, a CPU24 responds to a read-out address moving circuit 26, and wake information in the past and voyage information of a tidal current, etc. corresponding to the designation are read out of a wake memory 32 and a buffer memory 16, respectively. Also, the wake and the voyage information of a tidal current, a water temperature, a water depth, etc. are displayed on a wake part 62, a numerical display part 60, etc. of a color cathode ray tube 58 so as to be easily visible by the respective designated colors by a color selecting switch 40.</p> |
