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David Burch is a renowned expert on navigation with severalsuccessful titles and a high profile in the boating community. The founderand director of the Starpath School of Navigation, Burch holds a Ph.D. inphysics and has more than 60,000 miles of ocean sailing experience.
List of Figures and Tables | p. viii |
Foreword to the First Edition | p. xii |
Preface to the Second Edition | p. xiii |
Acknowledgments | p. xv |
Introduction | p. 1 |
What Is Emergency Navigation? | p. 1 |
The Scope of This Book | p. 2 |
Preparation for Navigational Emergencies | p. 3 |
Time and Place at Sea | p. 9 |
Latitude Regions and Seasons Defined | p. 10 |
Time in Navigation | p. 12 |
Finding Position versus Keeping Track of Position | p. 13 |
Directions at Sea | p. 15 |
Choosing a Route | p. 16 |
Compass Checks | p. 17 |
Steering without a Compass | p. 21 |
Steering by Wind and Swells | p. 27 |
Reading the Wind | p. 29 |
Swells, Waves, and Ripples | p. 34 |
Wind Shifts | p. 37 |
Steering by the Stars | p. 42 |
Know the Whole Sky | p. 42 |
How the Stars Move | p. 43 |
Steering by the North Star | p. 47 |
The Summer Triangle | p. 53 |
The Great Square of Pegasus | p. 54 |
Finding North without the North Star | p. 54 |
Steering by Orion | p. 56 |
Steering by Gemini and Procyon | p. 57 |
Steering by Scorpio | p. 58 |
Steering by the Southern Cross and the South Pole | p. 59 |
Steering by Overhead Stars | p. 62 |
Steering by Zenith Stars | p. 64 |
Star Paths | p. 70 |
Timing Low Stars | p. 72 |
Steering by the Sun | p. 75 |
Sunrise and Sunset | p. 75 |
Morning Sun and Afternoon Sun | p. 78 |
Local Apparent Noon | p. 82 |
Solar Time Method | p. 86 |
The Shadow-Tip Method | p. 89 |
The Tropics Rule for the Sun | p. 93 |
Sun Crossing Due East or West | p. 93 |
Sun Compasses | p. 94 |
When the Sun Is Obscured | p. 98 |
Steering by Other Things in the Sky | p. 99 |
The Moon | p. 99 |
The Planets | p. 106 |
Clouds, Birds, and Planes | p. 108 |
Satellites | p. 114 |
Steering in Fog or Under Cloudy Skies | p. 115 |
How to Make a Magnetic Compass | p. 116 |
Direction Finding with a Portable Radio | p. 117 |
Streaming a Line along the Centerline | p. 119 |
Finding the Sun as a Viking Would | p. 121 |
Currents | p. 124 |
Ocean Currents | p. 125 |
Tidal Currents | p. 128 |
Wind-Driven Currents | p. 129 |
Coastal Currents | p. 130 |
Dead Reckoning | p. 132 |
Emergency DR | p. 132 |
Finding Boat Speed | p. 134 |
DR Errors from Speed and Direction | p. 136 |
DR Errors from Current and Leeway | p. 142 |
Progress to Weather | p. 146 |
Latitude at Sea | p. 148 |
Makeshift Altitude Measurements and Calibrations | p. 148 |
Makeshift Altitude Corrections | p. 155 |
Latitude from Polaris | p. 156 |
Latitude from Zenith Stars | p. 159 |
Latitude from Horizon-Grazing Stars | p. 162 |
Latitude from Double Transits of Circumpolar Stars | p. 169 |
Latitude from the Sun at LAN | p. 170 |
Latitude from the Length of Day | p. 178 |
Keeping Track of Latitude | p. 183 |
Longitude at Sea | p. 186 |
Longitude from Sunrise or Sunset | p. 187 |
Longitude from LAN (the Equation of Time) | p. 189 |
Finding UTC from a Known Position | p. 197 |
Keeping Track of Longitude | p. 197 |
Coastal Piloting without Instruments | p. 201 |
Signs of Land at Sea | p. 202 |
Visible Range of Lights and Land | p. 207 |
Distance Off | p. 211 |
Running Fix from Radio Bearings | p. 216 |
Course Made Good in Current | p. 217 |
What to Do with What You've Got | p. 219 |
Routine Navigation with Everything | p. 219 |
Position by Radio Contact | p. 226 |
Everything but UTC | p. 228 |
Everything but a Sextant | p. 234 |
Everything but Sight Reduction Tables | p. 240 |
Everything but a Compass | p. 245 |
Everything but an Almanac | p. 246 |
Nothing but UTC | p. 249 |
Annotated Bibliography | p. 250 |
Basic Marine Navigation | p. 250 |
Almanac Data | p. 251 |
Stars and Star Identification | p. 252 |
Finding Longitude without Time | p. 252 |
No-Instrument Navigation | p. 253 |
Emergency Seamanship | p. 256 |
Periodicals of Interest to Emergency Navigation | p. 256 |
Meteorology and Oceanography | p. 257 |
Published Aids to Navigation | p. 258 |
Index | p. 260 |
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