Emergency Navigation, 2nd Edition Improvised and No-Instrument Methods for the Prudent Mariner

David Burch 지음

McGraw-Hill 2008년 05월 14일 출간

작품소개

책소개

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

목차

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 Wo

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저자(글) David Burch