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Re: Integrating marine sextant

From: Alexandre Eremenko (no email)
Date: Thu Jun 02 2005 - 03:27:07 EDT

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    It is not clear to me which horizon it uses.
    (Could use both).
    The only purpose I can imagine for this instrument at sea
    (besides artificial horizon if it has one)
    is observation from some very shaking platform.
    I have no experience in sea with an ordinary sextant
    (but going to try it in July from a small boat)
    so I can only guess.

    It does not look like something related to a periscope:
    that kind of sextant is rigidly attached to the periscope
    is it?

    And this one has special shoulder straps.
    And some misterious wired box...

    Alex.

    On Wed, 1 Jun 2005, Robert Gainer wrote:

    > Alex,
    > You say that you interpret "Integriruiushchii Morskoi Sextan" as
    > “Integrating marine sextant.” That is good enough for me. This is now the
    > first one of its kind that I have seen. I wonder why you would want this
    > type instead of the more traditional instrument. This would work without a
    > visible horizon?
    > Robert Gainer
    >
    >
    > >From: Alexandre Eremenko <>
    > >Reply-To: Navigation Mailing List <>
    > >To:
    > >Subject: Re: Integrating marine sextant
    > >Date: Wed, 1 Jun 2005 16:14:05 -0500
    > >
    > >The name under which it is listed
    > >is compatible with the Russian label
    > >on the box and on the manual: IMS-3.
    > >Which I interpret as "Integriruiushchii Morskoi Sextan"
    > >(Integrating marine sextant). But of course,
    > >other, unexpected interpretations are possible.
    > >(I remember how much time and efforts it took to me to decipher
    > >the stupid abbreviation SNO-T:-)
    > >
    > >I am sure the manual contains the explanation of what
    > >IMS stands for. And I see no reason for the seller
    > >to deceive us and to represent an aircraft sextant
    > >as a marine sextant.
    > >
    > >Its weight is enormous: 12 kg.
    > >(With the box and everything inside the box).
    > >Are aircraft sextants really so hudge and heavy?
    > >Apparently it has some straps to fix it on your shoulders.
    > >
    > >I have no other evidence.
    > >Alex.
    > >
    > >On Wed, 1 Jun 2005, Robert Gainer wrote:
    > >
    > > > Alex,
    > > > Is there anything other then the description on the web site that makes
    > >you
    > > > think it’s a marine sextant? I think the description might be wrong and
    > >this
    > > > is just an aircraft unit.
    > > > Robert Gainer
    > > >
    > > >
    > > > >From: Alexandre Eremenko <>
    > > > >Reply-To: Navigation Mailing List <>
    > > > >To:
    > > > >Subject: Integrating marine sextant
    > > > >Date: Wed, 1 Jun 2005 13:50:15 -0500
    > > > >
    > > > >Something I've never seen before.
    > > > >Apparently a marine sextant modeled
    > > > >on an aircraft sextant.
    > > > >http://antiques-marine.com/sextants/862/
    > > > >
    > > > >Alex.
    > > >
    > > > _________________________________________________________________
    > > > Don’t just search. Find. Check out the new MSN Search!
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    > > >
    >
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