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    Re: 3-Star Fix - "Canned Survival Problem"
    From: Mike Burkes
    Date: 2008 Jun 13, 06:34 -0700

    Captain Lecky would be proud of those dividers ha! Speaking of
    interpolation I have found a neat way to get around that pesky DSD and
    interpolation tables by using the aviation E6B computer or the
    equivalent nautical slide rule. Essentially the set up:d-value/60=d-
    correction/declination minutes. Yes the calculator offers the proof.
    Mike Burkes
    On Jun 12, 11:44�pm, Anabasi...@aol.com wrote:
    > Thanks for the nice exercise Greg. �I literally had to dust off the �ship's
    > Vol III of HO 229 and deflower a Plotting sheet 925 to work this one �out.
    >
    > Since I was bereft of electronic gadgets, I did this with a plotting sheet, �
    > 2 triangles, a pair of dividers, 2 books, a pencil, and small piece of scratch
    > �paper (wouldn't have reams of paper in the Lifeboat). �I have attached a �
    > picture in to this message with the plot and the tools.
    >
    > My Lat is a bit lower (plotting or math error?). �I used an assumed �position
    > method and HO 229. �I had to assume we were drifting and no �current (didn't
    > advance or retard the lines). �I had not done a full HO 229 �paper reduction
    > of a star in many years, and I had to think a second to remember �how to use
    > the interpolation pages on the inside covers for the declination �interpolation.
    > �I usually whip those off with the calculator. �Still, �I got pretty close to
    > the computer solutions with Lat 34deg 11.9' N and �Longitude 119deg 16.0'W.
    >
    > As to how you would get an Eastern sight on the west coast, you would have �2
    > options in general. �The first would be a back sight. �This would be �
    > particularly difficult with a regular sextant at such a low altitude. �The �other
    > option would be to use a bubble sight tube or other artificial �horizon. �If you
    > were across a bay, you could also use a dip short of �the horizon table. �
    > That's all I can think of at the moment.
    >
    > Jeremy
    >
    > **************Vote for your city's best dining and nightlife. City's Best
    > 2008. � � �(http://citysbest.aol.com?ncid=aolacg00050000000102)
    >
    > �gregExerPlot.jpg.JPG
    > 182KViewDownload
    >
    > �GregExerTools.jpg.JPG
    > 129KViewDownload
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