Thomas Hubbard Sumner

（重定向自Sumner method）

A New and Accurate Method of Finding a Ship's Position at Sea, by Projection on Mercator's Chart, Capt. Thomas H. Sumner, 1845

Thomas Hubbard Sumner (20 March 1807 – 9 March 1876) was a sea captain during the 19th century. He is best known for developing the celestial navigation method known as the Sumner line or line of position.

单词	Sumner method
释义	Sumner method 英语百科 Thomas Hubbard Sumner （重定向自Sumner method） Thomas Hubbard Sumner (20 March 1807 – 9 March 1876) was a sea captain during the 19th century. He is best known for developing the celestial navigation method known as the Sumner line or line of position.
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