Re: [Paddlewise] GPS observation

From: Fred T, CA Kayaker <cakayak_at_mindspring.com>
Date: Thu, 07 Sep 2000 19:42:38 -0700
 At 09:15 AM 9/5/2000 -0700, Dan Hagen wrote:

  he pointer on the compass page is a course-correction pointer--it
  shows the discrepancy between your heading (actual direction of
  travel, or "track" angle to use Garmin's nomenclature), and the
  bearing to the waypoint.  For example, if you are holding a 30-degree
  ferry angle and this is the correct ferry angle to take you to your


I am not familiar with the Garmin units, but on the Magellan units I have
(ColorTrak and the Map 330X (New and not on dealer shelf yet) they
provide "CTS" = Course To Steer.  This is the corrected course for drift,
etc. to take you to your destination vs. the direct bearing from your
current position.

Another area that should be considered when following the GPS Compass
Rose is:

  * It only works when you are moving above xx mph/kph speed

  * It can be set to True North or Magnetic North

If you set it to "Magnetic North" does it correct for Magnetic Variation
automatically or just show magnetic headings like your compass that must
be corrected for Declination and Variation.

Interesting, I will do some more research on the last item.

Fred
California Kayaker
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Received on Thu Sep 07 2000 - 19:44:59 PDT

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