How To Use Plastic Sextants With Applications To Metal Sextants And A Review Of Sextant Piloting
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How To Use Plastic Sextants With Applications To Metal Sextants And A Review Of Sextant Piloting
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Author : David Burch
language : en
Publisher:
Release Date : 2010-09
How To Use Plastic Sextants With Applications To Metal Sextants And A Review Of Sextant Piloting written by David Burch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-09 with Sports & Recreation categories.
Sextants are used to measure angular heights of celestial bodies above the horizon to find the latitude and longitude of the observer. They can also be used on land with artificial horizons. Sextants can also be used to find the correct Universal Time by measuring the angular distance between the moon and another body along its path across the zodiac. In coastal waters or on land, sextants can be used for very accurate piloting by measuring the horizontal angles between charted landmarks. The vertical angle of a peak above its baseline determines the distance to it, which, combined with a compass bearing, yields a position fix from just one landmark. The angular dip of an object (island or vessel) below the visible horizon can also be used to determine the distance to it. This booklet explains how to get the best results from plastic sextants, and presents numerical comparisons with similar data from metal sextants. Sextant piloting techniques are also reviewed as they are an ideal use of a plastic sextant.
Celestial Navigation In The Gps Age
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Author : John Karl
language : en
Publisher: Paradise Cay Publications
Release Date : 2007
Celestial Navigation In The Gps Age written by John Karl and has been published by Paradise Cay Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Technology & Engineering categories.
Many books on celestial navigation take shortcuts in explaining concepts; incorrect diagrams and discussion are often used for the sake of moving the student along quickly. This book tells the true story-and the whole story. It conveys celestial navigation concepts clearly and in the shortest possible time.It's tailored for navigation in the GPS age-a time of computers, calculators, and web resources. Although it covers all of the traditional methods of 'working a sight, ' the primary thrust is using the (under $10) scientific calculator. By using equations that you key into your calculator, this book guides you toward a better understanding of the concepts of celestial navigation.You will learn novel ways to plot lines of position, ways to check your sextant accurately by star sights, and how to tell what time it is from a moon sight. The many appendices are a treasure of references and explanations of abstract ideas. Celestial Navigation is a crucial skill for the offshore navigator to know, this book provides the shortest path to that knowledge.
The Sextant Handbook
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Author : Bruce Bauer
language : en
Publisher: McGraw Hill Professional
Release Date : 1995-02-22
The Sextant Handbook written by Bruce Bauer and has been published by McGraw Hill Professional this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-02-22 with Nature categories.
Loran and GPS notwithstanding, there will always be a place for the sextant aboard any blue-water boat, if for no other reason than the thrill and mystery of finding one's position on earth by gazing at the heavens. Here is the indispensable reference that should accompany the instrument aboard. Cmdr. Bruce Bauer, a professional navigator and master mariner with the U.S. Merchant Marine, has distilled years of hands-on experience into an eminently readable guide to buying, adjusting, using, and repairing sextants. The Sextant Handbook is dedicated to the premise that electronic navigation devices, while too convenient to disregard, are too vulnerable to rely on exclusively. The book is designed to make beginner and expert alike conversant with this most beautiful and functional of the navigator's tools. Topics include: Assembly and Disassembly Vital Adjustments Avoiding Problems Rough Weather Sightings Oiling and Cleaning Immersion Baths Emergency Silvering Finding and Buying Used Sextants And Much More You'll also find a list of distributors, manufacturers, and dealers worldwide, a discussion of future trends, and numerous helpful hints, including sighting with eyeglasses and using a Rude starfinder. All in a thoroughly revised edition of a book acclaimed by navigation professionals.
The Barometer Handbook
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Author : David Burch
language : en
Publisher:
Release Date : 2009
The Barometer Handbook written by David Burch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Nature categories.
A modern look at barometers and applications of barometric pressure.
Inland And Coastal Navigation 2nd Edition
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Author : David Burch
language : en
Publisher: Starpath Publications
Release Date : 2013-11
Inland And Coastal Navigation 2nd Edition written by David Burch and has been published by Starpath Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11 with Sports & Recreation categories.
This book is an updated and expanded edition of a text that has been used in navigation courses for 30 years. It covers practical small-craft navigation (sail, power, or paddle), starting from the basics and ending with all that is needed to navigate safely and efficiently on inland and coastal waters in all weather conditions. It is for beginners, starting from scratch, or for more seasoned mariners who wish to expand their skills. Topics include: Charts, Chart Reading, and Chart Plotting Instruments and Logbook Procedures Compass Use Piloting and Dead Reckoning Lights and Buoyage Tides and Currents Rules of the Road GPS and other Electronic Aids The GPS tells us where we are and how fast we are moving in what direction, but it can never tell us the safest, most efficient route to our destination. That fundamental task requires the basic navigation skills taught in this book, which we can use as well to check the GPS underway, and then be prepared to navigate without the GPS if we need to. The hallmark of good seamanship is to look ahead and be prepared. The text covers not only the long tested traditional methods of navigation but also the efficient use of the latest technology in electronic navigation and charting.
Emergency Navigation
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Author : David F. Burch
language : en
Publisher: International Marine/Ragged Mountain Press
Release Date : 1989-11
Emergency Navigation written by David F. Burch and has been published by International Marine/Ragged Mountain Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989-11 with Navigation categories.
"Emergency Navigation is far more generally applicable than the title indicates. It is, first and foremost, a detailed account of how to find your position anywhere in the world's oceans after your electronics fail and you lose your sextant, watch, and almanac, but that's really only the beginning. The book is chock-full of good sound navigational techniques and principles that will serve you well regardless of where and under what conditions you are sailing. Hopefully you will never be confronted by the need for emergency navigation, but even the most pleasurable sailing afternoon can be enlivened by a knowledge of the skills and methods taught in this book. Each chapter presumes a fundamental understanding of navigational principles, then deepens and expands that understanding to embrace little-known techniques and makeshfit instruments. Beginning with the assumption that preparing for a navigational emergency is good seamanship, Burch presents detailed discussions on finding time and place at sea; determining direction; steering by wind and swells; steering by the stars; steering by the sun; and steering by other objects in the sky. You will also find chapters on steering under conditions of reduced visibility; piloting in currents; dead reckoning; latitude and longitude; and no-instrument coastal piloting. A final summary tells you what to do in any situation with what you have available at the time. David Burch writes lucidly, and the text is well supported by 127 detailed illustrations. This book offers excellent insights into sound seamanship that will serve you well in all your sailing activities. "A standout in the otherwise faceless navigation texts that passthrough our offices. Anyone venturing offshore should read this book thoroughly."--"Yachting Magazine "Opens the way to pleasurable understanding in a definitive work of instant appeal to seamen of all levels of experience. Full insights into nautical astronomy rarely seen in standard works. . . . Full of sound seamanship for coastal and open water mariners alike."--"The Navigation Foundation "Gives one a deeper understanding of the basic principles of navigation . . . a great store of knowledge which may serve you well in an emergency but will also give much pleasure off watch whilst improving your seamanship in the process."--"British Cruising Association Bulletin "Thorough and authoritative. . . . chapters on steering by the stars, sun, and moon stir the imagination and make one want to be a thousand miles from land . . . Gives us a better understanding of the signposts above the horizon than we might gain from a lifetime of random gazing."--"Sea Kayaker Magazine "Far more than an essay on the principles and practice of emergency navigation, it is a particularly well-written account of the principles of navigation in general and as such cannot fail to bring fresh insights to all of us. Every section and paragraph is permeated with sound practical seamanship . . . Apart from its other virtues, this alone makes it worthwhile."--from the foreword by David Lewis (author of "We, the Navigators and "Ice Bird) "Clearly written in a readable fashion . . . the work is so well thought out and covers so many possibilities that both a beginner and the most experienced navigator will find something of value in its pages. Worth every penny of its cost."--"The Burgee Magazine
Shoreline And Sextant
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Author : John P. Budlong
language : en
Publisher: New York ; Toronto : Van Nostrand Reinhold Company
Release Date : 1977
Shoreline And Sextant written by John P. Budlong and has been published by New York ; Toronto : Van Nostrand Reinhold Company this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Coastwise navigation categories.
Fundamentals Of Kayak Navigation
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Author : David Burch
language : en
Publisher:
Release Date : 1987
Fundamentals Of Kayak Navigation written by David Burch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Reference categories.
Code Of Safe Working Practices For Merchant Seafarers
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Author : The Stationery Office
language : en
Publisher: Stationery Office Books (TSO)
Release Date : 2018-01-18
Code Of Safe Working Practices For Merchant Seafarers written by The Stationery Office and has been published by Stationery Office Books (TSO) this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-18 with categories.
Amendment to 2015 consolidated ed. (ISBN 9780115534027). Amendment consists of loose-leaf pages that replace select pages from the main edition binder
Cognition In The Wild
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Author : Edwin Hutchins
language : en
Publisher: MIT Press
Release Date : 1996-08-26
Cognition In The Wild written by Edwin Hutchins and has been published by MIT Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-08-26 with Psychology categories.
Edwin Hutchins combines his background as an anthropologist and an open ocean racing sailor and navigator in this account of how anthropological methods can be combined with cognitive theory to produce a new reading of cognitive science. His theoretical insights are grounded in an extended analysis of ship navigation—its computational basis, its historical roots, its social organization, and the details of its implementation in actual practice aboard large ships. The result is an unusual interdisciplinary approach to cognition in culturally constituted activities outside the laboratory—"in the wild." Hutchins examines a set of phenomena that have fallen in the cracks between the established disciplines of psychology and anthropology, bringing to light a new set of relationships between culture and cognition. The standard view is that culture affects the cognition of individuals. Hutchins argues instead that cultural activity systems have cognitive properties of their own that are different from the cognitive properties of the individuals who participate in them. Each action for bringing a large naval vessel into port, for example, is informed by culture: the navigation team can be seen as a cognitive and computational system. Introducing Navy life and work on the bridge, Hutchins makes a clear distinction between the cognitive properties of an individual and the cognitive properties of a system. In striking contrast to the usual laboratory tasks of research in cognitive science, he applies the principal metaphor of cognitive science—cognition as computation (adopting David Marr's paradigm)—to the navigation task. After comparing modern Western navigation with the method practiced in Micronesia, Hutchins explores the computational and cognitive properties of systems that are larger than an individual. He then turns to an analysis of learning or change in the organization of cognitive systems at several scales. Hutchins's conclusion illustrates the costs of ignoring the cultural nature of cognition, pointing to the ways in which contemporary cognitive science can be transformed by new meanings and interpretations. A Bradford Book