Sail Smart - Mark Chisnell

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Résumé :
Master your instruments and turn on-board information into racing results Modern sailors are bombarded with a wealth of information from their on-board instruments. From apparent and true wind speed to boat speed and speed over the, there's no shortage of data to interpret. Sail Smart shows you how to become the master of your instruments and make the right calls every time, knowing for certain when to tack, which shift to look out for, how the tide can work for or against you, and much more. With diagrams and full-color photographs throughout, this accessible and instructional guide turns information into excellence. *Unlock your winning potential *Maximise your onboard instruments *Learn to think like a professional yachtsman

Biographie:
Mark Chisnell divides his time between professional sailing and writing. He has competed as a navigator at the highest level and has written a series of technical sailing titles, Mark has also written three fiction titles.

Sommaire:
Introduction vii Chapter 1 Position Fixing Systems 1 Some Thoughts 1 The Global Positioning System 2 Using the GPS 6 Chapter 2 Instrument Systems 15 Stand-Alone Equipment versus Integrated Systems 15 The Wind Triangle and some Nomenclature 16 Chapter 3 Setting Up an Instrument System 23 Some Comments on the Calibration Process 23 Calibration of the Compass 25 Calibration of the Boat Speed 26 Calibration of the Apparent Wind Speed and Angle 27 Calibration of the Depth 34 Calibration of the Heel Angle Gauge 35 Calibration of Leeway 35 Calibration of the True or Sailing Wind 37 Don't Panic!! 45 Damping - High or Low? 46 Chapter 4 Some Instrument Techniques 49 Start Lines and Wind Shifts 49 Heel Angle or Wind Speed? 54 Anticipation 55 Chapter 5 Polar Tables and Where They Come From 57 What are Polar Tables? 57 Polar Table Accuracy 59 Velocity Prediction Programmes 60 Velocity Made Good and Target Boat Speeds 61 Data Collection and Performance Analysis 64 Chapter 6 Instrument Techniques using the Polar Table 71 Next Leg Calculations 71 Velocity Made Good to the Course: VMC 73 Weather and Current Routing 80 Appendix A A Quick Guide to Calibration 83 Appendix B General Maintenance 89 Appendix C Calibration Records 9