2017 Bowditch- American Practical Navigator

The Nautical Almanac

The free online Nautical Almanac
The world's most complete source of free celestial navigation information

AMERICAN
PRACTICAL NAVIGATOR

AN EPITOME OF NAVIGATION

ORIGINALLY BY

NATHANIEL BOWDITCH, LL.D.

Click here to download American Practical Navigator Volume 1 (110 MB)

Low Resolution- Volume 1 (28 MB)

Click here to download American Practical Navigator Volume 2 (45 MB)

Low Resolution- Volume 2 (6 MB)

Below, find and download the Parts, individual Chapters or Tables you want.
Volume 1 and Volume 2 are below.

American Practical Navigator
Volume 1

Front Matter & Title Page

Table of Contents

Part 1- Fundamentals <----download Part 1 chapters 1-6

Chapter 1- Introduction To Marine Navigation

Chapter 2- Geodesy and Datums In Navigation

Chapter 3- Hydrography

Chapter 4- Nautical Charts

Chapter 5- ECDIS: Electronic Chart Display and Information Systems

Chapter 6- Nautical Publications

Part 2- Piloting <----download Part 2 chapters 7-12

Chapter 7- Short-Range Aids To Navigation

Chapter 8- Compasses

Chapter 9- Dead Reckoning

Chapter 10- Piloting

Chapter 11- Use of A Sextant In Piloting

Chapter 12- The Sailings

Part 3- Celestial Navigation <----download Part 3 chapters 13-19

Chapter 13- Navigational Astronomy

Chapter 14- Instruments For Celestial Navigation

Chapter 15- Azimuths and Amplitudes

Chapter 16- Time

Chapter 17- The Almanacs

Chapter 18- Sight Planning

Chapter 19- Sight Reductions

Part 4- Inertial Navigation<----download Part 4 chapter 20

Chapter 20- Introduction To Inertial Navigation

Part 5- Radio Frequency (RF) Navigation Techniques<----download Part 5 chapters 21-24

Chapter 21- Radio Waves

Chapter 22- Satellite Navigation

Chapter 23- Radar Navigation

Chapter 24- Loran Navigation

Part 6- Alternative Navigation Techniques.pdf<----download Part 6 chapters 25-26

Chapter 25- Doppler Sonar Navigation

Chapter 26- Bathymetric Navigation

Part 7- Navigational Safety <----download Part 7 chapters 27-31

Chapter 27- Navigation Processes

Chapter 28- Emergency Navigation

Chapter 29- Navigation Regulations

Chapter 30- Maritime Safety Systems

Chapter 31- Reporting

Part 8- Ice and Polar Navigation<----download Part 8 chapters 32-33

Chapter 32- Ice Navigation

Chapter 33-Polar Navigation

Part 9- Oceanography <----download Part 9 chapters 34-37

Chapter 34- The Oceans

Chapter 35- Tides and Tidal Currents

Chapter 36- Ocean Currents

Chapter 37- Waves, Breakers and Surf

Part 10- Marine Meteorology <----download Part 10 chapters 38-41

Chapter 38- Weather Elements

Chapter 39- Tropical Cyclones

Chapter 40- Weather Observations

Chapter 41- Weather Routing

Appendices <-----download Appendices A, B, C

Appendix A- The World Sailing Ship Routes

Appendix B- Calculations and Conversions

Appendix C- Satellite Navigation

Index of Volume 1 <-----download alphabetic index

American Practical Navigator
Volume 2

Front Matter & Title Page

Table of Contents

Part 1

Useful Tables <-------download Explanaton of Navigation Tables

Explanation of Navigation Tables

Mathematical Tables<----download Tables 1-4

Table 1- Logarithms of Numbers

Table 2- Natural Trigonometric Functions

Table 3- Common Logarithms of Trigonometric Functions

Table 4- Traverse Tables

Cartographic Tables<-------download all Cartographic Tables

Table 5- Natural and Numerical Chart Scales

Table 6- Meridional Parts

Table 7- Length of a Degree of Latitude and Longitude

Piloting Tables<-------download all Piloting Tables 8-18

Table 8- Conversion Table for Meters, Feet, and Fathoms

Table 9- Conversion Table for Nautical and Statute Miles

Table 10- Speed Table For Measured Mile

Table 11- Speed, Time, and Distance

Table 12- Distance of the Horizon

Table 13- Geographic Range

Table 14- Dip of the Sea Short of the Horizon

Table 15- Distance by Vertical Angle Measured Between Sea Horizon and Top of Object

Beyond Sea Horizon

Table 16- Distance by Vertical Angle Measured Between Waterline at Object and Top of Object

Table 17- Distance by Vertical Angle Measured Between Waterline at Object and Sea

Horizon Beyond Object

Table 18- Distance of an Object by Two Bearings.pdf

Celestial Navigation Tables<-------download all Celestial Navigation Tables 19-28

Table 19- Table of Offsets

Table 20- Meridian Angle and Altitude of A Body On The Prime Vertical Circle

Table 21- Latitude and Longitude Factors

Table 22- Amplitudes

Table 23- Correction of Amplitude Observed On The Visible Horizon

Table 24- Altitude Factors

Table 25- Change of Altitude In Given Time From Meridian Transit

Table 26- Time Zones, Zone Descriptions, and Suffixes

Table 27- Altitude Correction For Air Temperature

Table 28- Altitude Correction For Atmospheric Pressure

Meteorological Tables<-------download all Meteorological Tables 29-36

Table 29- Conversion Table For Thermometer Scales

Table 30- Direction and Speed of True Wind In Units of Ship's Speed

Table 31- Correction of Barometer Reading For Height Above Sea Level

Table 32- Correction of Barometer Reading For Gravity

Table 33- Correction of Barometer Reading For Temperature

Table 34- Conversion Table For Millibars, Inches, and Millimeters of Mercury

Table 35- Relative Humidity

Table 36- Dew Point

Part 2

Mathematics, Errors, and Conversions<-------download all Mathematics, Errors, and Conversionsl Chapters 1-6

Chapter 1- Mathematics

Chapter 2- Interpolation

Chapter 3- Navigational Errors

Chapter 4- Calculations and Conversion

Chapter 5- Compass Conversions

Chapter 6- Compass Errors

Part 3

Appendices<--------download Appendices A, B & C

Appendix A- The World Sailing Ship Routes

Appendix B- Haversines

Appendix C- Conversion of Compass Points to Degrees

Glossaries<-----------download Glossaries

Glossary of Abbreviations and Acronyms

Glossary of Marine Navigation

Index of Volume 2<-----download alphabetic index

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