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](/Images/godic/202502/14/A_new_and_accurate_method_of_finding_at_sea1021.jpg")
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.