Reply to post: Computer?

US Navy grabs old-fashioned sextants amid hacker attack fears



"...and a serious amount of math work to get your position within a couple of miles"

Nothing you can't put on a programmable scientific calculator. There are power series on the orbital elements for the positions of the Sun and Moon up to navigational accuracy for a couple of years either side of now that can be downloaded into a modest calculator along with positions of the navigational stars. Coordinate transformations are relatively routine.

Coat: Mine's the one with the Ebco emergency sextant in the (large) pocket.

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