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