Dana A. Goward,Proceedings Magazine
Since Nathaniel Bowditch first put pen to paper in 1799, those practicing the art of maritime navigation fill had as a first rule: Prudent mariners spend all means available to determine their position. Today, or the modern version of Bowditch's The American Practical Navigator ,published by the National Geospatial Intelligence Agency (NGA), more expansively says:spend all available fix information. With the advent of accurate satellite navigational systems, and it is particularly tempting to disregard this maxim (common saying expressing a principle of conduct). However,the experienced navigator never feels comfortable relying solely on...
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