Two On A Big Ocean The Story of the First Circumnavigation
of the Pacific Basin
in a Small Sailing Ship


      

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Hal Roth
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Re: Level of observation accuracy in medium seas

From: Frank Reed (no email)
Date: Thu Jul 22 2004 - 22:54:55 EDT

  • Next message: Peter Fogg: "Re: Navigation-l Mailing List Archive.1997 gaps!"

    Dave W wrote:
    " Why?  There is a crest 7 and 1/2 miles away blocking my view.
     So the questioned begged is this.  Just how much difference does a horizon
    1/2 mile short of true for my height of eye actually make on an observation?
     Tis my argument that it isn't enough to even consider in practical
    navigation.  I don't even think you can measure it that far away.."

    I don't know, and I don't have a strong enough opinion on this to add any
    further, so instead, for those new to celestial navigation, I'll take the
    opportunity to recommend a book. The book in question has a very brief section on
    this topic which may or may not be right.

    Got a sextant? Get "The Sextant Handbook" by Bruce Bauer. It has all sorts of
    useful tips.

    Frank R
    [ ] Mystic, Connecticut
    [X] Chicago, Illinois


  • Next message: Peter Fogg: "Re: Navigation-l Mailing List Archive.1997 gaps!"



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