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Re: Latitude Sailing Question
From: Gary LaPook
Date: 2011 May 29, 15:46 -0700

Yep, any two star fix will establish your latitude, you only need time to establish longitude. You could plot your two star fix in terms of latitude and SHA and this fix rotates around the globe in 23 hours and 56 minutes and this is the principal of the Weems star-altitude curves. You shoot the two stars and plot them on the chart of star altitude curves which gives you your latitude and the SHA of the fix. You then apply GHA Aries to determine your longitude.
gl

--- On Sun, 5/29/11, John Karl <jhkarl@att.net> wrote:

From: John Karl <jhkarl@att.net>
Subject: [NavList] Re: Latitude Sailing Question
To: NavList@fer3.com
Date: Sunday, May 29, 2011, 2:05 PM

One answer doesn't use the sun, but a simple St. Hilaire star fix. Without the correct time, it gives the incorrect longitude, but the correct latitude. See the discussion on "Time from a lunar LOP and a star fix" in my book.
JK
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