Navigation improv'd: or, The art of rowing ships of all rates, in calms, with a more easy, swift, and steady motion, than oars can. Also, a description of the engine that performs it; and the author's answer to all Mr. Dummer's objections that have been made against it ... By Tho. Savery, gent., by Thomas Savery

Title:	Navigation improv'd: or, The art of rowing ships of all rates, in calms, with a more easy, swift, and steady motion, than oars can. Also, a description of the engine that performs it; and the author's answer to all Mr. Dummer's objections that have been made against it ... By Tho. Savery, gent.
Author:	Savery, Thomas, 1650?-1715
Note:	London,: Printed and sold by James Moxon, at the Atlas in Warwick-lane, 1698

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Subject:	Ship propulsion -- Early works to 1800
Subject:	Navigation -- Early works to 1800
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