FACTOID # 106: Americans are 15% more innovative than the Japanese. But in percentage terms, the Japanese grant 3.5 times more patents.
 
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Encyclopedia > Navigable

A river or canal is Navigatable if the water is deep and wide enough, and not flowing too fast.


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Navigation - Wikipedia, the free encyclopedia (2553 words)
The Polynesian navigators routinely crossed thousands of miles of open ocean, to tiny inhabited islands, using only their own senses and knowledge, passed by oral tradition, from navigator to apprentice.
Celestial navigation systems are based on observation of the positions of the Sun, Moon and stars relative to the observer and a known location.
Navigators could determine their latitude by measuring the angular altitude of Polaris any time that it was visible (excepting, of course, in those southern latitudes from where it cannot be observed).
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