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    In 1761, an English landsman perfected a device which has been considered the most important advance in marine navagation since the invention of the compass. What was this device, who developed it, and why was it so important?

    Question #98177. Asked by clemmydog. (Aug 01 08 10:40 AM)


    zbeckabee

    		The most important single advance in modern navigation was the development by the English horologist John Harrison (1693–1776) of the first accurate marine chronometer in 1761; on a voyage from London to the West Indies, this specially constructed clock accurately determined the ship’s longitude.

    http://www.history.com/encyclopedia.do?articleId=217414

    In 1761, John Harrison invented a pocket watch accurate enough to use for navigation at sea, which lost only 5 seconds in 6 and ½ weeks. This tiny watch has demonstrated the power of a small watch.

    http://www.rcmaps.com/news.htm

    Aug 01 08, 11:17 AM

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