[Rhodes22-list] Rhodes 22 does 17.6kts !!!

[Alan Robertson]

Thanks much!!  Will stick with the chart, the corrected compass and dead reckoning in fog.
  ----- Original Message ----- 
  From: Mary Lou Troy<mailto:mtroy at atlanticbb.net> 
  To: The Rhodes 22 mail list<mailto:rhodes22-list at rhodes22.org> 
  Sent: Monday, June 25, 2007 7:49 AM
  Subject: Re: [Rhodes22-list] Rhodes 22 does 17.6kts !!!


  Actually by showing you speed over ground and your exact position it 
  accounts for both in a sense. What our handheld GPS doesn't do (don't 
  know about the fancier ones) is give you a compass reading or show 
  you speed through the water - it only gives SOG and the direction you 
  need to go to get to a waypoint.

  Mary Lou
  1991 R22 Fretless
  Rock Hall, MD

  At 11:51 PM 6/24/2007, you wrote:
  >A GPS can't substitute for local knowledge nor if is configured 
  >primarily for land use has limitations for marine. Can a GPS account 
  >for tidal currents or leeward drift on a beat? Please enlighten we 
  >old chart and parallel rulers users!!
  >   ----- Original Message -----
  >   From: John Lock<mailto:jlock at relevantarts.com<mailto:jlock at relevantarts.com>>
  >   To: rhodes22-list at rhodes22.org<mailto:rhodes22-list at rhodes22.org<mailto:rhodes22-list at rhodes22.org%3Cmailto:rhodes22-list at rhodes22.org>>
  >   Sent: Sunday, June 24, 2007 2:53 PM
  >   Subject: [Rhodes22-list] Rhodes 22 does 17.6kts !!!
  >
  >
  >   Now that I have your attention...  that's what my GPS reported on
  >   Saturday afternoon.  We were sailing in light wind, but the GPS was
  >   reporting speeds all over the place - sometimes 1.5, then 6.4, then
  >   3.5, then 0... all within a matter of seconds.  Clearly this was not
  >   trustworthy.
  >
  >   I turned the GPS off and back on again, figuring I'd unscramble its
  >   brains that way.  No good, still got wacky speeds reported, even
  >   though our progress was pretty steady and I'd guess around 2.5kts.
  >
  >   So... we decided to go visit a friend on the lake and called him up
  >   to see if he's home. "Sure, come on over!", he says, " but my
  >   satellite service is down, so no TV".  Aha!  Now the pieces come
  >   together - solar activity must be mucking with the satellites.  It
  >   was a good lesson on the limitations of electronic  gear.  I wasn't
  >   tracking position, so I can't tell if that was whacked too, but I'm
  >   guessing you couldn't trust it either based on the confused speed
  >   reports I got.
  >
  >   Don't throw away your paper charts just yet ;-)
  >
  >   Cheers!
  >
  >   John Lock
  >   ~~~~~~~~~~~~~~~~~~
  >   s/v Pandion - '79 Rhodes 22
  >   Lake Sinclair, GA
  >   ~~~~~~~~~~~~~~~~~~
  >
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