GPS Reviews

Garmin n vi 350 3 5 Inch Portable GPS Navigator

What if one device could help you navigate anywhere in the U.S. and Canada, while offering travel tips, storing your favorite tunes and photos, providing translation assistance, and more? That device is here, and it’s not much bigger than a deck of cards.

Tips for Traveling on the Water

With new GPS, though, things are different than just using a map. We now know our absolute position within a few feet. Precisely. We can navigate point-to-point without ever looking outside.  We can even do this in a boat.  The only problem if you are in a boat is that the folks that surveyed the charts and marked where the hazards are may not have known their absolute position to that accuracy. What they did know, though, with fairly good certainty was the location of the micro-scale details relative to meso-scale features.

Our dilemma in the day of extremely accurate GPS positioning is that the rocks that were charted before GPS was available don’t appear at the precise latitude/longitude that the chart says that they should be at. That is why a lot of folks are now complaining that our charts are inaccurate.

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