This booklet has been used for 30 years, up-to-date periodically as wanted. greater than 20,000 scholars have effectively discovered ocean navigation from those fabrics and long gone directly to move oceans or circumnavigate the globe. This booklet covers how to define place at sea from timed sextant attractions of the solar, moon, stars, and planets plus different regimen and distinct systems of secure, effective offshore navigation. No past navigation event is needed. the single math concerned is mathematics (adding and subtracting angles and times). it is a functional, how-to-do-it publication, which additionally comprises transparent motives of the way it really works and the way to do it good. Plus this publication contains different an important components of ocean navigation in addition to simply checking out the place you're from the celebrities, akin to logbook tactics, useless reckoning, blunders research, course making plans, and extra. on the finish of this ebook, you can be prepared for ocean navigation. The booklet comprises: textual content, perform difficulties, tables decisions, targeted thesaurus, and entire suggestions. Printable paintings kinds, plotting sheets, and different assets can be found at no cost from www.starpath.com/celnavbook. Preface to the second one variation: we're happy to assert that once ten extra years of utilizing this article we don't locate cause to alter the elemental technique and strategies of the educating. We nonetheless use lots of the similar examples, that are now relatively previous, yet that's the fantastic thing about celestial navigation. It has now not replaced, so we don't profit in anyway from making all new examples, which might carry with them extra probability of blunders in a e-book of many numbers. we now have, despite the fact that, particularly superior and improved the publication. every one part has been up-to-date and reformatted for a clearer presentation, frequently in accordance with pupil questions through the years. New snap shots were extra and older ones all up to date. there's a lot new content material within the textual content, specifically within the In-Depth bankruptcy, together with extra special dialogue of the sailings and extra history at the ideas. New sections have been extra on common ocean navigation and optimizing the fixes. we've additionally up to date the digital navigation part, as such a lot ocean navigators may also be utilizing different instruments in addition to celestial.