A new and accurate method of finding a ship's position at sea, by projection on Mercator's chart ...
Subtitle: The principles of the method being fully explained and illustrated by problems, examples, and plates, with rules for practice, and examples from actual observation
By: By Capt. Thomas H. Sumner
Edition: 3d ed., rev.
Publisher: T. Groom & co.
Published: 1851
Place of publication: Boston
Language: eng
Number of pages: 90
Subjects: Sumner's method
Other titles: New method of finding a ship's position at sea
Notes: Cover vignette stamped in gold.

Publisher's advertisement: 2 p. (at end)

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