| 摘要 |
PROBLEM TO BE SOLVED: To provide a vessel speed display apparatus capable of securing accuracy in the display of vessel speed, by correcting deviations in the relation between output voltage and actual vessel speed, even if they have occurred. SOLUTION: In a speed meter 15 for detecting hydraulic pressure that acts when a marine vessel is propelled at a pressure sensor 16, converting the output voltage from the pressure sensor 16 based on the hydraulic pressure into vessel speed at a CPU 18, and displaying the vessel speed on a display part 19, when the marine vessel is decided as being stationary, the CPU 18 performs a zero-point correction that sets the output voltage of the pressure sensor 16 at the decision on stationary state of the vessel speed to 0 km/h. COPYRIGHT: (C)2008,JPO&INPIT
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