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


      

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Re: Martelli's Navigational Tables

From: Henry C. Halboth (no email)
Date: Sun May 29 2005 - 17:33:57 EDT

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    I guess the value of Martelli's tables is, at this point in time, purely
    historical. At one time, however, they were a valued short tabular
    method. The same might well be said for any calculative method not
    employing a computer or calculator.

    On Sat, 28 May 2005 15:38:37 -0500 Courtney Thomas <>
    writes:
    > Please excuse my ignorance, but what is the value of Martelli's
    > tables ?
    >
    > Thank you,
    > C. Thomas
    >
    >
    > On Sat, 2005-05-28 at 12:36, Victor Garand wrote:
    > > Henry,
    > > The 1952 edition (new GHA edition with additional examples and
    > quick
    > > reference charts (59 pages) ...) includes the following:
    > > -Position Line (sun or star), longitude, latitude and intercept
    > (St. Hilaire
    > > or calculated altitude) methods.
    > > -Position Line (circumpolar star), longitude, latitude and
    > intercept (St.
    > > Hilaire or calculated altitude) methods.
    > > -Deviation of magnetic compass.
    > > -High-altitude ex-meridian.
    > > -Amplitudes.
    > > -Identification of stars.
    > > -Great Circle distance and initial course.
    > > -Calculation of points on Great Circle.
    > >
    > > Googling, I found that some used book dealers have a copy of these
    > tables
    > > but I couldn't ascertain the vintage.
    > >
    > >
    > > ----- Original Message -----
    > > From: "Henry C. Halboth" <>
    > > To: <>
    > > Sent: Friday, May 27, 2005 9:22 PM
    > > Subject: Re: Martelli's Navigational Tables
    > >
    > >
    > > >I have used the 1914 edition and still do for the time sight
    > solution. I
    > > > really did not know that these tables had continued in print as
    > late as
    > > > 1952 and must assume them to have been modernized to allow for
    > an
    > > > intercept and azimuth solution.
    > > >
    > > > On Wed, 25 May 2005 10:17:27 -0600 Victor Garand
    > <>
    > > > writes:
    > > >> Is there anyone on the list who still uses these? My edition is
    > a
    > > >> 1952 edition, is there a later edition?
    > > >
    >


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