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Old 06-18-2014, 06:51 PM   #14
City: Brunswick
Country: USA
Vessel Name: Yet To Be
Vessel Model: 1979 Gulfstar 44' Motor Cruiser
Join Date: Nov 2013
Posts: 9
Garmin handheld GPS - get the 12v cigarette adapter

Our chart plotter at the helm uses too much energy and we can't hear the alarm in the aft cabin, so we use the Garmin 76c with the anchor alarm feature. Installed a 12v outlet by the bed and purchased the 12v cigarette cable for the Garmin (no more AA batteries).

We consider several factors when we set the distance... 1) expected weather, 2) distance to others in the anchorage, 3)distance to trouble (shallows, rocks, channel markers, etc.), 4)how much chain we have out, 5) changing currents/tides, etc. If we expect strong winds or currents pushing us toward trouble, we set a short distance. Otherwise, maybe twice the length of chain we have out plus the distance from the bow to our aft cabin. We sleep like babies.

We also use the Garmin at the helm when underway as a back-up to the main chart plotter. Having redundant GPS and charts with similar but not always the same info is useful.
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