Skip to content
Home/ GPS Backup with a Mark 3 Sextant: All Instructions and Tables Included; For Any Ocean, on Any Date;
GPS Backup with a Mark 3 Sextant: All Instructions and Tables Included; For Any Ocean, on Any Date;

GPS Backup with a Mark 3 Sextant: All Instructions and Tables Included; For Any Ocean, on Any Date;

by Burch, David
No customer reviews yet ISBN 9780914025603 Starpath Publications

No power, and batteries used up? This book and an inexpensive Mark 3 sextant lets you carry on. Alternatively, if you want to learn a basic celestial navigation position fix for any reason with minimum investment, this book shows how to do that.

It's a short book, mostly tables. You can read it in an hour or two, master the sights in less than that, and find your position the next time you see the noonday sun.

Our guiding principle for this booklet was to provide a means of learning and executing a position fix at sea when a vessel has lost its GPS navigation. We wanted a solution that is compact and inexpensive, using tables and procedures that are easy to learn and use. This goal led to our proposing a minimum kit that mariners would not hesitate to add to their gear to cover the unlikely situation it would actually be needed. Mariners who cross oceans in small boats realize they must be self-reliant and cover all contingencies.

For mariners who do not have the opportunity to learn the full range of celestial navigation, this booklet and a Mark 3 sextant serve as an inexpensive backup that can be used to navigate across any ocean.

The almanac pages included have been custom designed to facilitate fast, easy solutions for Lat and Lon from the sun, plus we include a unique new Regiment of the North Star for easy Latitude by Polaris sights on any date.

About the author

Product details

BrandStarpath Publications
Pub dateJun 6, 2018
ISBN-100914025600
ISBN-139780914025603
Paperback108.0 pages
LanguageEnglish
Dimensions9 × 0.22 × 6 in
Weight0 lb
Last updated 2025-11-21 01:34
$18.74 $19.95 6% off
You save $1.21 · list price $19.95
In stock — ships in 24 hours with free tracking
Delivery by Tuesday, October 6, 2026
Qty
Sign in to Add to Saved list
Free delivery on orders over $35.
15-day returns. Any reason.
Secure checkout. We never store card details.

Readers who bought this also bought

More from Navigation
See all
How to Read a Nautical Chart, 2nd Edition (Includes All of Chart #1): A Complete Guide to Using and
Calder, Nigel
$21.09
Sextant Handbook (H/C) (Revised)
Bauer, Bruce
$44.15
Practical Ship Design, 1
D G M Watson
$160.00
MMDREF Coast Pilots & Light Lists
MMDREF Coast Pilots & Light Lists
$51.08
Air Almanac 2008
<p><b>NOTE: NO FURTHER DISCOUNT FOR THIS PRINT PRODUCT--OVERSTOCK SALE --Significantly reduced list price while supplies last</b><br /><br /> Provides astronomical data for air navigation. Contains ephemeral data for the year, together with auxiliary tables and graphs, and a brief explanation of the use of the volume. Presents data for the Sun, Moon, Aries, planets, and stars. Requires Adobe Acrobat Reader or similar product to view and print.<br /><br /> Related products: <br /><br /><b>Current and updated edition -- Air Almanac 2017 (CD-ROM) </b>can be found here: https: //bookstore.gpo.gov/products/sku/008-054-00249-8</p><p><b>Astronomical Almanacs and Navigation Guides product collection</b> can be found here: https: //bookstore.gpo.gov/catalog/transportation-navigation/almanacs-nav...</p><p><b>Aviation resources collection</b> can be found here: https: //bookstore.gpo.gov/catalog/transportation-navigation/aviation</p><p>Other products produced by the <b>U.S. Naval Observatory </b>can be found here: https: //bookstore.gpo.gov/agency/927</p>"
$41.88
Nautical Almanac (2010)
For over 150 years the United States Nautical Almanac Office has published The Nautical Almanac, first as part of the American Ephemeris and Nautical Almanac, and then on its own, to provide the US Navy with a convenient form of the astronomical data used for celestial navigation. This book is still the standard resource for marine celestial navigation for the U.S. Navy. The Nautical Almanac provides essential astronomical information for every kind of sea-going vessel, from cruise liners to fishing boats. It is fully comprehensive, containing a set of concise sight reduction tables for the navigator, together with all the necessary information needed for use in determining the position at sea from sextant observations. Nautical Almanac is essential for astro-navigation and used by many astro-teaching courses.
$48.38