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  Topic Review (Newest First)
03-08-2006 09:49 AM
genesis-uno Thanks for the reply, but my GPS unit does not have this feature, with a programmable threshold for movement, is a Magellan colortrak.
I was thinking more on a mechanical type of alarm.
03-07-2006 05:58 PM
administrator as sailingfool said, most GPS unit have this feature with a programmable threshold for movement. If you get a GPS with "differential" they're very accurate. I forget what the manufacturers advertise but I've cruised by nav aids entering locals areas and my gps unit (a Furuno) showed the navaid a few feet from the boat when it was in fact "a few feet" from the boat.

I have not had to rely on it in the fog but after seeing it perform I would trust it.
03-07-2006 05:22 PM
sailingfool Most GPS units will have an anchor alarm feature. It may tend to false warnings when you swing, but a small price to pay...

03-07-2006 02:18 PM
anchor alarm

Hello every body,
Can any body give me a tip of an anchor alarm, so I can sleep at night?
Thanks in advance

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