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Hi FR and all and yes FR I would love to see your dad's data and thanks much. 
Regarding no 14 I treated it as a running fix by retarding my AP of 14d N, 
143d 03.4 E (HO 249) 1.8 nm 260d, solving from there, and arriving at EP 14d 
15.4 N, 142d 53.3 E. I also treated GPS fix as DR. 
Mike Burkes
>
> Jeremy,
> you're right, what I got is only an estimated position, which is meaningless
> unless the 1900 ZT position is considered a DR position as it used to happen
> before GPS.
> I still have some navigation notes that my father took when he was an
> Italian merchant marine deck officer. They are real life celnav problems and
> if anyone is interested I would be glad to post some of them here.
> Federico
>
> -----Messaggio originale-----
> Da: NavList@fer3.com [mailto:NavList@fer3.com] Per conto di
> Anabasis
> Inviato: venerd� 8 agosto 2008 22.26
> A: NavList
> Oggetto: [NavList /] Re: Exercise #14 Multi-Moon LOP's
>
>
> Frederico,
>
> Glad you worked them out. I didn't bother posting a solution as
> such. Basically the given 1900 ZT position is a GPS fix, so that is
> what we can assume to be the true position, and the celestial fix is
> an error check of the GPS position (please no arguements on this point
> as it is beyond the scope of this exercise.)
>
> I plugged each moonline into my celestial program (SkyMate Pro) as
> individual moon LOP's. The computer then compared them and gave me a
> fix of 14 deg 14.9' North; Longitude 142 deg 51.9' East. This is a
> 1.7 nm error as compared to the 1900 fix via GPS.
>
> The trouble with crossing an averaged LOP in this case with a course
> line is that it does not give us a fix, but rather an "estimated
> position."
>
> This is an experiment I did to see if a fairly large number of sights
> of the same body, shot in a relatively short period of time, could
> give us a position of reasonable accuracy away from meridian transit.
> As we can see, it is fairly accurate, certainly accurate enough for a
> deep sea position. The position probably would be more accurate if
> the azimuth of the body was greater then 5.5 degrees, but that is why
> I shot the moon, as the azimuth is changing rapidly, even away from
> the time or meridian transit.
>
> Jeremy
>
>
> >

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