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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Haversines with Logarithms
From: David C
Date: 2020 Oct 16, 14:12 -0700
From: David C
Date: 2020 Oct 16, 14:12 -0700
Brian wrote
I have in hand, a copy of Inman’s Nautical Tables, 1947 version, first published in 1821. My copy contains a reviser’s preface which describes a revision made by Rev Hall, in 1910.
I believe that Percy Davis introduced the cosine-haversine method to the RN. In the 1932 edition of Inmans (p294) there is a copyright notice by Davis in which he states that the haversine table, which was first published in 1905, has been used in Bowditch and HO200 without permission. Specifically the reprints "... ARE NOT AUTHORISED AND ARE INFRINGEMENTS OF COPYRIGHT." (his caps).
