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    Re: What precision is required in cel nav?
    From: Hewitt Schlereth
    Date: 2015 Jul 23, 09:59 -0700
    Quick, whoever knows how, I think a topic change title may be at hand.

    Anyway, re the atmospheric conditions that night. Wasn't a book recently published to the effect that they were really weird? I recall a phrase on the order of, "a very deceiving night" ?

    Hewitt

    On Jul 23, 2015, at 9:01 AM, Paul Dolkas <NoReply_Dolkas@fer3.com> wrote:

    According to Ballard in The Discovery of the Titanic (pg 199), the location of the actual collision with the iceberg is known, since the ship broke in two, and the massive boilers sank directly down from that position:

     

    “This means the Titanic sank roughly 13.5 miles east southeast of her CQD position. She is just south of her calculated course, but well to the east.” Both the California and the Mount Temple steamed to her reported position and found nothing there; the Carpathia  was en-route to this position as well when it came across the Titanic’s floating life boats.

     

    I think there have been long discussions on this site about why the Titanic’s navigators were so far off in their calculations. The viewing that night must have been near perfect: no moon and a crystal clear sky.

     

    Paul Dolkas

     

    From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of Henry Halboth
    Sent: Wednesday, July 22, 2015 10:57 PM
    To: paul{at}dolkas.net
    Subject: [NavList] Re: What precision is required in cel nav?

     

    If I remember correctly CARPATHIA steamed directly to within sight of TITANIC's lifeboat distress signals.

    But then again, I wasn't there!

     

    Henry

     

    On Wed, Jul 22, 2015 at 9:41 PM, Paul Dolkas <NoReply_Dolkas@fer3.com> wrote:

    I seem to recall reading that the Titanic did NOT know where it was, causing the rescue ships (when they finally did arrive) to go to the wrong location.

     

    Paul Dolkas

     

    From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of John D. Howard
    Sent: Wednesday, July 22, 2015 12:12 PM
    To: paul{at}dolkas.net
    Subject: [NavList] Re: What precision is required in cel nav?

     

    Geoffrey,

    In your no GPS world the aircraft looking for you will know it's own position to + or - 10 miles.   LOL

    The Titanic knew where it was.

    In good fun - John H.

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