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    Re: Role of CN at sea, was Re: Averaging sights ...
    From: Nels Tomlinson
    Date: 2004 Oct 12, 14:34 -0800

    We can quite reasonably hope that the system will never go out, though
    with the problems NASA has been having with the space shuttle and
    satelite launches, who knows?  The cheapie GPS receiver you have on
    board is quite another matter.  It is susceptible to lightening
    strikes, getting crunched, dead batteries, falling overboard and so
    Has anyone ever heard of a vessel loosing all of its GPSs while at
    sea?  If it hasn't happened yet, I suspect it will.
    On Wed, 13 Oct 2004 08:18:22 +1000, Lisa Fiene  wrote:
    > Sure, you're right in that you can't always get a sight, but it's a
    > skill I definitely want to keep up.
    > Interesting that you say you've never had a problem with the accuracy
    > and reliability of GPS, as this has been my experience also.  That being
    > said, I do know of yachties who've recently had to undergo nav. courses
    > as they had experienced failure of their GPS at sea.
    > Anyways, guess people could go on and on about this.  I just know I
    > personally wouldn't leave home without my sextant on board.
    > Lisa
    > Herbert Prinz wrote:
    > >
    > >
    > >
    > > I do not see how one can maintain this attitude in the face of reality. In my
    > > admittedly very limited experience of ten thousand off shore miles over the last
    > > ten years I have not ONCE been in a situation where GPS didn't work, but cel nav
    > > would. In fact, I have not once been in a situation at sea where GPS didn't work.
    > > Full stop. But I have REPEATEDLY been in situations where celestial was
    > > unavailable for several days in a row and GPS was the only position finding tool
    > > available. Conclusion: Celestial is not even a backup!
    > >
    > > Herbert Prinz
    > >
    > >

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