Thomas Hubbard Sumner
American sea captain (1807-1876) · United States · Died at 68
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Something wrong?Thomas Hubbard Sumner was a sea captain during the 19th century. He is best known for developing the celestial navigation method known as the Sumner line or circle of equal altitude.
Also in Deutsch
Photos 3
A New and Accurate Method of Finding a Ship's Position at Sea, by Projection on Mercator's Chart, by Capt. Thomas H. Sumner, 2nd. Ed. 1845![Plot of Sumner's calculated positions in 1837[4]: 56](https://upload.wikimedia.org/wikipedia/commons/thumb/9/96/Bowditch_1958_Figure_131_Sumner_Line.jpg/1280px-Bowditch_1958_Figure_131_Sumner_Line.jpg)
Plot of Sumner's calculated positions in 1837[4]: 56
Orthographic projection showing approximate position of the subsolar point and part of the circle of equal altitude at 10 am GMT 17 December 1837About this person
Country
United States
Status
deceased
Dates
Lived 1807 to 1876 · aged 68
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