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    Re: SOA vs SMG or SOG
    From: Byron Franklin
    Date: 2009 Oct 28, 12:45 -0700

    Trial and error is just want it is, why use it, if you can find the
    error immediatly?
    Almost by just looking at a plot. I developed the Franklin Piloting
    Techique about 1960 and used it to solve compass erroes problem aboard
    other ships that had compass problems and there Azimuth said zero. The
    CVS11 in New York, had their gyro and system corrected in the yards at
    great expense, Traviled to Norfok VA. and than to her new home port in
    RI. In all that time they said they had 0 gyro error. I came aboard in
    RI.22 SEP 69. ( after they ran aground, Compass error may had help the
    grounding?) They got underway and after their 3rd fix I told the
    Navigater that they had 1.5 EAST error. I did not touch the chart I
    only looked over the plotter shoulder. It turned out they had a 1.65
    degree error. No trial and error for me! I will set up some of my
    Writings with mr Brown the past editor of BOWDITCH and RADAR
    NAVIGATION MANUAL. The NAVY has been teaching some of my navigation
    techiques but The other sea going sailors have not.
    On Oct 28, 1:06�pm, "Richard M. Pisko"  wrote:
    > On Tue, 27 Oct 2009 15:35:52 -0600, QMCM  wrote:
    > > It was in thanks for using
    > > several of my articals and introducing The Franklin Piloting, The
    > > Graduated perpendiclar bisector, for the three point problem (Sextant)
    > I read your message #9304, but did not see any of the diagrams. �My only �
    > Bowditch is 1995.
    > I'm interested in resecting my position from three points, mostly from the �
    > plane table. �I hadn't seen any instrument that would make it easier, �
    > other than a three arm protractor or purpose drawn intersecting angle �
    > chart overlays. �Protractors are getting a bit expensive. �Is a picture of �
    > your bisector available, with instructions?
    > Trial and error in making the triangle smaller on a plane table map is �
    > pretty quick, if you understand the direction and amount each line will �
    > move when rotating the table for a new round of sights. �Two rounds �
    > usually gives a very good position, +/- 2 or 3 hundredths of an inch on �
    > the map; depending on the "goodness" of the angles to the reference points.
    > --
    > Richard . . .
    > Using Opera 9.2.4 after the "Dog" died
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