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Name: How To Read A Nautical Chart Author: Nigel Calder ISBN: 0071376151 Binding: Soft A superior alternative to CHART 1- Symbols and Abbreviations. This must-read for any and all boaters, not only describes symbols and terms, but also includes great illustrations, explanations and examples. The discussion of the history of chart preparation is a valuable lesson in the reliability and accuracy of modern charting. Did you know that hydrographic standards used to collect the majority of data on modern charts are considerably less accurate than GPS position fixes? That the majority of soundings still come from lead-line surveys? Nigel Calder does and explains in plain English why a chart is like it is and what all those abbreviations mean. Many samples, great color graphics and no-nonsense explanations make this vital if you expect to do more than just follow a GPS route. In fact, he explains how you may get into trouble following a GPS route.