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compassinertial guidance systemnavigation chartdead reckoningcelestial navigationsextantradio direction findercollision avoidancebearingradio navigationtraffic controlundersea explorationaviationshipping
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Key People

William Adams
English navigator

William P. Lear
American engineer and industrialist

Jean-Charles de Borda
French naval officer and physicist

George Dollond
British optician

Peter Dollond
British optician

Harold Gatty
Australian-born aviator

Edmond Halley
British scientist

Nathaniel Bowditch
American navigator

Sir George Cayley
British inventor and scientist

Nevil Maskelyne
British astronomer

Sir Robert Dudley
English engineer
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