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    Re: What precision is required in cel nav?
    From: Tom Sult
    Date: 2015 Jul 17, 09:38 -0500
    Mid ocean the need for sub 2 mile sites is not important. The horizon distance from a low hight of eye is small and the need for better sights grows as one gets closer to your low lying island. To be good at sub 2 mile sights one should try to make every sight approx. sub 1 mile.  

    There is nothing as fun as zigzagging around looking for your land fall with growing panic. 


    Tom Sult, MD
    Author: JUST BE WELL
    justbewell.info

    On Jul 16, 2015, at 21:41, John D. Howard <NoReply_Howard@fer3.com> wrote:

    A question for all:

    What precision is required when doing cel nav ?

    The reason I ask is I am a pilot and when we had to do cel nav in the C-141 trying to find Canton I. or Wake we were happy to get a fix + or - 10 miles.  ( I was happy - maby my navigator was not. )

    It seems to me a ship in the middle of the ocean does not NEED one mile accuracy.  Close to port or hazards yes but in the Pacific ?

    I just revieved the book " Hawaii by Sextant" from Starpath and it goes to great lengths doing statics to get a set of sights to yeild a fix 1/2 mile better.  Is that extra work nessasry or pride ina good job?

    Don't want to step on any toes, just want to know.  Flying is different the sailing.

    Thanks --  John H.

       
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