| 摘要 |
<p>PURPOSE:To enable a running anchor to be monitored even without experience and knowledge of operations by automatically determining the distance from a ship to be monitored to an anchor and the center and radius of a running-anchor monitoring circle while taking into account meteorological conditions and the length of the ship body. CONSTITUTION:When a ship to be monitored is determined as having anchored on the display screen of a radar 1, a running-anchor-monitoring-circle setting means 11 receives inputs of wind speed W, the direction D of wind, the name and identification number ID of the ship from a data input device 9 and an input of the length of the ship body from a ship-body length data file 10 and calculates the distance LA from the ship to the anchor and the radius R of a running-anchor monitoring circle. According to the distance LA, the position Pa of the ship when the anchoring is finished, and the direction D of wind, a point windward of the ship position Pa by the distance LA is estimated as the position of the anchor and the center position Po of the running anchor monitoring circle is determined. A warning state judging means 6 provides an output 7 of warning instructions when the distance (r) between the current measured position Pi of the ship to be monitored having the identification number ID and the center position Po of the running anchor monitoring circle for the ship becomes greater than the radius.</p> |
