NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Orion at oceannavigator site
From: Peter Hakel
Date: 2013 Feb 10, 12:09 -0800
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
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
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
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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: http://fer3.com/arc/m2.aspx?i=122310
File: 122312.sun.xls
File: 122312.alt_corr.xls
File: 122312.noon_sight.xls
