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2018 Nautical Almanac

Author: Uk Hydrographic
Publisher:
ISBN: 9781684114610
Size: 26.70 MB
Format: PDF, ePub, Mobi
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The cornerstone for all celestial navigation, listing the celestial bodies used for navigation, a sight reduction table, and other information valuable to the offshore navigator. The content of this edition is identical to the United States Naval Observatory edition.

Nautical Almanac For The Year 2018

Author: Government Publications Office
Publisher: Government Printing Office
ISBN: 9780160937415
Size: 24.68 MB
Format: PDF, Kindle
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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 book is produced in collaboration with Her Majesty's Nautical Almanac Office in the UK. That Office maintains the copyright on the material it produces. The Nautical Almanac contains the following data tabulated at hourly intervals to a precision of 0.1 arcminute: the Greenwich hour angle and declination of the Sun, Moon, and navigational planets; the Greenwich hour angle of Aries; positions of the navigational stars; rise and set times of the Sun and Moon for a range of latitudes; and other data. Each edition also contains a sight reduction tab≤ sight reduction formulas; and various correction tables for sight reduction. There is a useful concise sight reduction form at the back of the book. The Nautical Almanac is available several months in advance of its edition date.

Emergency Navigation Card

Author: David Burch
Publisher: Paradise Cay Publications
ISBN: 9780939837588
Size: 41.62 MB
Format: PDF, Mobi
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A wealth of information is provided: an emergency almanac for the sun, and declination tables for the stars; several methods of sight reduction, including one that requires only the card itself; and angular markings on the perimeter of the card that allows approximate altitude measurements of celestial bodies. With this card and a watch you can find your way to any major port in the world. Other information includes how to steer by the stars and finding your boat's speed. A handy card to have in case your GPS, sextant, or almanac becomes lost. The card is loose-leaf sized. You can punch holes in it for insertion in a binder. It is plastic laminated for weatherproofing and durability.

Celestial Navigation

Author: David Burch
Publisher:
ISBN: 9780914025511
Size: 16.92 MB
Format: PDF, ePub, Mobi
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This book has been used for 30 years, updated periodically as needed. More than 20,000 students have successfully learned ocean navigation from these materials and gone on to cross oceans or circumnavigate the globe. This book covers how to find position at sea from timed sextant sights of the sun, moon, stars, and planets plus other routine and special procedures of safe, efficient offshore navigation. No previous navigation experience is required. The only math involved is arithmetic (adding and subtracting angles and times). This is a practical, how-to-do-it book, which also includes clear explanations of how it works and how to do it well. Plus this book includes other crucial factors of ocean navigation besides just finding out where you are from the stars, such as logbook procedures, dead reckoning, error analysis, route planning, and more. At the end of this book, you will be ready for ocean navigation. The book includes: text, practice problems, tables selections, detailed glossary, and full solutions. Printable work forms, plotting sheets, and other resources are available at no charge from www.starpath.com/celnavbook. Preface to the Second Edition: We are pleased to say that after ten more years of using this text we do not find reason to change the basic approach and methods of the teaching. We still use most of the same examples, which are now quite old, but that is the beauty of celestial navigation. It has not changed, so we do not benefit in any way from making all new examples, which would bring with them more chance of error in a book of many numbers. We have, however, notably improved and expanded the book. Each section has been updated and reformatted for a clearer presentation, often in response to student questions over the years. New graphics have been added and older ones all updated. There is much new content in the text, especially in the In-Depth chapter, including more detailed discussion of the sailings and more background on the principles. New sections were added on general ocean navigation and optimizing the fixes. We have also updated the electronic navigation section, as most ocean navigators will also be using other tools besides celestial.

English As A Global Language

Author: David Crystal
Publisher: Cambridge University Press
ISBN: 1107611806
Size: 75.43 MB
Format: PDF, ePub, Docs
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David Crystal's classic English as a Global Language considers the history, present status and future of the English language, focusing on its role as the leading international language. English has been deemed the most 'successful' language ever, with 1500 million speakers internationally, presenting a difficult task to those who wish to investigate it in its entirety. However, Crystal explores the subject in a measured but engaging way, always backing up observations with facts and figures. Written in a detailed and fascinating manner, this is a book written by an expert both for specialists in the subject and for general readers interested in the English language.

Applied Ethnobotany

Author: Anthony B. Cunningham
Publisher: Taylor & Francis
ISBN: 1136534660
Size: 80.15 MB
Format: PDF
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Its wise and sensitive approach to working with local people will be relevant in situations throughout the world.' ECOS 'The numerous diagrams, tables of data, information flow charts, fieldwork sketches etc. give a great vibrancy to the work... It deserves a wide readership.' TEG News Wild or non-cultivated plants are crucial to the lives of a large portion of the world's population, providing low-cost building materials, fuel, food supplements, medicines, tools and sources of income. Despite their importance, their vulnerability to harvesting and other social impacts is not well understood. Applied Ethnobotany is the first practical guide to be published on how to manage wild plant species sustainably. This detailed manual on wild plant resources sets out the approaches and field methods involved in participatory work between conservationists, researchers and the primary resource users. Supported by extensive illustrations, it explains how local people can learn to assess the pressures on plant resources and what steps to take to ensure their continued availability. For all those involved in resource management decisions regarding plant species and diversity, and in particular those studying or working in conservation, rural development and park management, this guide is invaluable. Published with WWF, UNESCO and Royal Botanic Gardens Kew

Exploring Ancient Skies

Author: David H. Kelley
Publisher: Springer Science & Business Media
ISBN: 9781441976246
Size: 70.50 MB
Format: PDF, Docs
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Exploring Ancient Skies brings together the methods of archaeology and the insights of modern astronomy to explore the science of astronomy as it was practiced in various cultures prior to the invention of the telescope. The book reviews an enormous and growing body of literature on the cultures of the ancient Mediterranean, the Far East, and the New World (particularly Mesoamerica), putting the ancient astronomical materials into their archaeological and cultural contexts. The authors begin with an overview of the field and proceed to essential aspects of naked-eye astronomy, followed by an examination of specific cultures. The book concludes by taking into account the purposes of ancient astronomy: astrology, navigation, calendar regulation, and (not least) the understanding of our place and role in the universe. Skies are recreated to display critical events as they would have appeared to ancient observers--events such as the supernova of 1054 A.D., the "lion horoscope," and the Star of Bethlehem. Exploring Ancient Skies provides a comprehensive overview of the relationships between astronomy and other areas of human investigation. It will be useful as a reference for scholars and as a text for students in both astronomy and archaeology, and will be of compelling interest to readers who seek a broad understanding of our collective intellectual history.