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    Re: Orion at oceannavigator site
    From: Peter Hakel
    Date: 2013 Feb 10, 12:09 -0800
    Robin,

    Thanks for sharing this problem with the list.  Assuming zero index correction and standard atmospheric conditions, I get:

    LAN occurs at UT: 15h 34m 57s
    Ho: 73d 44.9'
    Latitude: N 25d 14.3'

    For details see the attached three files.


    Peter Hakel


    From: Robin Stuart <robinstuart@earthlink.net>
    To: pmh099@yahoo.com
    Sent: Sunday, February 10, 2013 11:11 AM
    Subject: [NavList 22310] Re: Orion at oceannavigator site


    Ocean Navigator contains a lot useful information, engaging articles and some cautionary tales related to offshore passage making. In the latest edition it describes the effects of squalls on boats returning from the Newport to Bermuda race. The J-120 Mireille was knocked down beyond 90 degrees and sea water flooded out the navigation station. It doesn’t say whether they fell back on celestial – probably just used a hand held GPS.
    I also enjoy David Berson’s “Nav Problem” column in Ocean Navigator which contains a Celnav problem linked to an historical back story. Here’s one from last September’s edition that I’m interested in comparing answers to with list members. Calculations are done using the 2012 Nautical Almanac. It is April 12, DR position 25d15’N, 53d35’W. Height of the eye is 12 feet. What time is LAN at the DR position? A lower limb noon sight gives Hs 73d32.6’. What is Ho and the latitude?
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    View and reply to this message: http://fer3.com/arc/m2.aspx?i=122310


    File: 122312.sun.xls
    File: 122312.alt_corr.xls
    File: 122312.noon_sight.xls
       
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