Argumento de Emergency Navigation, 2nd Edition : Improvised and No-instrument Methods for the Prudent Mariner (ebook)
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Find Your Way at Sea, No Matter What
Inherently interesting and fun to read . . . provides the clearest understanding of general navigation principles we've seen yet. --BoatU.S.
Thorough and authoritative. --Sea Kayaker
A definitive work of instant appeal to seamen of all levels of experience. --The Navigation Foundation
Every sailor knows that instruments can fail. Things get wet, break, fall overboard. Whether you re safe on your boat or drifting in a life raft, let David Burch show you how to find your way no matter what navigational equipment you have. Often relying on common materials like a small stick, a plastic bottle, even a pair of sunglasses, Burch explains how to make use of all available means--from the ancient skills of Polynesian navigators to the contrails of airliners overhead--to calculate speed, direction, latitude, and longitude and to perform all aspects of piloting and dead reckoning.Learn how to
- Steer by sun, stars, wind, and swells
- Estimate current and leeway
- Improvise your own knotmeter or plumb-bob sextant
- Find the sun in a fogbank
- Estimate latitude with a plate and a knotted string
- And more vital information
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0" List of Figures and Tables Foreword to the First Edition Preface to the Second Edition Acknowledgments Chapter 1. Introduction What Is Emergency Navigation? The Scope of This Book Preparation for Navigational Emergencies Chapter 2. Time and Place at Sea Latitude Regions and Seasons Defined Time in Navigation Finding Position versus Keeping Track of Position Chapter 3. Directions at Sea Choosing a Route Compass Checks Steering without a Compass Chapter 4. Steering by Wind and Swells Reading the Wind Swells, Waves, and Ripples Wind Shifts Chapter 5. Steering by the Stars Know the Whole Sky How the Stars Move Steering by the North Star The Summer Triangle The Great Square of Pegasus Finding North without the North Star Steering by Orion Steering by Gemini and Procyon Steering by Scorpio Steering by the Southern Cross and the South Pole Steering by Overhead Stars Steering by Zenith Stars Star Paths Timing Low Stars Chapter 6. Steering by the Sun Sunrise and Sunset Morning Sun and Afternoon Sun Local Apparent Noon Solar Time Method The Shadow-Tip Method The Tropics Rule for the Sun Sun Crossing Due East or West Sun Compasses When the Sun Is Obscured Chapter 7. Steering by Other Things in the Sky The Moon The Planets Clouds, Birds, and Planes Satellites Chapter 8. Steering in Fog or Under Cloudy Skies How to Make a Magnetic Compass Direction Finding with a Portable Radio Streaming a Line along the Centerline Finding the Sun as a Viking Would Chapter 9. Currents Ocean Currents Tidal Currents Wind-Driven Currents Coastal Currents Chapter 10. Dead Reckoning Emergency DR Finding Boat Speed DR Errors from Speed and Direction DR Errors from Current and Leeway Progress to Weather Chapter 11. Latitude at Sea Makeshift Altitude Measurements and Calibrations Makeshift Altitude Corrections Latitude from Polaris Latitude from Zenith Stars Latitude from Horizon-Grazing Stars Latitude from Double Transits of Circumpolar Stars Latitude from the Sun at LAN Latitude from the Length of Day Keeping Track of Latitude Chapter 12. Longitude at Sea Longitude from Sunrise or Sunset Longitude from LAN (the Equation of Time) Finding UTC from a Known Position Keeping Track of Longitude Chapter 13. Coastal Piloting without Instruments Signs of Land at Sea Visible Range of Lights and Land Distance Off Running Fix from Radio Bearings Course Made Good in Current Chapter 14. What to Do with What You ve Got Routine Navigation with Everything Position by Radio Contact Everything but UTC Everything but a Sextant Everything but Sight Reduction Tables Everything but a Compass Everything but an Almanac Nothing but UTC Annotated Bibliography Basic Marine Navigation Almanac Data Stars and Star Identification Finding Longitude without Time No-Instrument Navigation Emergency Seamanship Periodicals of Interest to Emergency Navigation Meteorology and Oceanography Published Aids to Navigation Index "
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