"GPS: Instant Navigation" is an instructive and accessible guide to both the basics and the advanced techniques of the Global Positioning System.Kevin Monahan and Don Douglass do a marvelous job of getting navigators (no matter how crusty!) excited about GPS ("a revolutionary navigation system that provides postion information with accurary to within a few lengths of your vessel, 24 hours a day, anywhere in the world"). As you can witness from the previous definition, the authors write vividly and clearly.The book's layout is commendable, with varying font sizes and shadings between blocks of precise information and sharp b & w illustrations.All mariners should set their autopilots for "GPS."
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