Why you shouldn't rely on GPS/Radar alone

[madrasahs]

Originally Posted by marcucci

"...no one said why you should not rely on a GPS and/or radar to navigate winnipesaukee.

The archives indicated that in a time of national emergency, non-licensees (that's you) GPS' accuracy can go from 3-foot accuracy to 1000-feet.

Some folks who navigate ocean waters carry two GPS units. Things can go awfully wrong.

I found out that radar has a "dead spot" around the boat of several feet and much further if the radar is up high.

1) That's true. CL is also right about the hazard to people of using radar at the dock. (You may be able to detect non-compliers by hearing "radar zap" noise on your radio).

2) Radar's reliability also diminishes in rough-water conditions.

"...a huge cruiser almost ran me and my wife down.
Again, your eyes are invaluable for navigation!

With the increased installation/use of cellphones, stereos, DVDs, GPS, radar, VHF, and other distractions (like liquor) in today's boats, your eyes could very well save you.

I carry an old CD as a signaling mirror for sunny days and moderate seas -- when most collisions occur. It seems to help when in doubt on that approaching monster.

Boating has changed. You're right to be wary.


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