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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Ageton & HO 211
From: Paul Hirose
Date: 1999 Jul 05, 10:07 PM
From: Paul Hirose
Date: 1999 Jul 05, 10:07 PM
The Hydrographic Office first published HO 211 in 1931. Ageton invented this sight reduction method. Someone named Weems devised the "New Line of Position Tables" around the same time. This method required an assumed position such that LHA and latitude were integers. It was not published until 1943. Ageton published his "Manual of Celestial Navigation" in 1942, including the first Weems table as Table I and the HO 211 table as Table II. Did he give any credit to Weems? All the above info is from Bowditch. I like reading the chapter on the history of various sight reduction methods. Sad to say, I think that story is over. Get your copies of HO 229 while it's still in print! We'll never see anything like it again.
