| 摘要 |
When anchoring such boats by means of an anchor and a line attached to the bow of the boat it is desirable to receive an alarm which is initiated dependent upon the movement of the boat round with the wind direction when the wind conditions change to such an extent that it is necessary to anchor up anew. This object is achieved in that the anchoring alarm comprises a first device (1) for monitoring the wind speed and for producing a first signal when the wind speed exceeds a predetermined value, and a second device (2) for monitoring the value of the angle between the lengthways direction of the boat and a reference direction, this angle being set equal to nil at the time of anchoring, and for producing a second signal when the value of the angle exceeds a predetermined value as a result of a change in wind direction. The anchoring alarm also comprises an alarm arrangement (5) connected signalwise with the said devices and designed to produced a noise and/or light signal when the said first and second signals occur simultaneously. |
