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    Re: sextant without paper charts
    From: Scott Owen
    Date: 2008 Oct 31, 22:17 -0500

    frankreed@HistoricalAtlas.net wrote:
    > I have been aboard a nuclear submarine (when I was a kid, as a guest of a
    > friend's dad), and there's plenty of spare space for sight reduction tables,
    > even on an attack sub. Of course, space is still something that you don't
    > want to waste, so to me it would make sense to teach the tables in the
    > Nautical Almanac, rather than HO229, for that very improbable emergency
    >  --but definitely possible emergency-- where you need to navigate by sextant
    > and stars.
    QMs learn sight reduction using HO229, NA, and calculator methods.  How
    often they practice celnav would be entirely up the the ships navigator
    and Captain.  Call me crazy but it seems to me if you learn the methods
    you'd have the capability to be able to do them all.  So now we are back
    to the method of carry of those pubs which I will not repeat here.
    > Hey, I've got a question regarding naval practice with respect to celestial
    > navigation: when are they required to carry the almanac for the following
    > year? A nuclear sub can remain at sea for a very long time and in war-time,
    > it wouldn't be too hard to imagine staying away so long that you run past
    > December 31st. Is there a rule?
    Not sure it's a rule but I think I can answer it.  IIRC, the NA comes
    out every year around Oct or Nov from the USNO.  The USNO has a
    "distribution list" to mail a copy to all naval commands [ships, subs,
    shore facilities] that are required or want to have a copy.  If a Naval
    vessel is "deployed" before the issuance of the NA and is not in port
    before Dec 31 the vessel will receive it via mail at sea or via mail at
    the first available port where mail is received after Dec 31.  Ships do
    receive regular mail at sea including letters/packages from home and new
    publications covering expired publications.  The prudent ship/sub
    navigator will let USNO know they will be deployed during reissuance and
    have them send it to them first to allow for the anticipated lag time in
    receiving mail at sea.
    Lu, they have email at sea in the 21st Century and even back in the old
    20th Century but it's not unheard of to shut it off... another old
    adage, loose lips sink ships still applies.  I could give you the
    technical details on how email at sea works but I am disinclined to do so.
    > And you added:
    > "I believe I did include calculators but..."
    > Yes, you did. 'Nuff said.
    >  -FER
    Navigation List archive: www.fer3.com/arc
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