Free Download Celestial Navigation: A Complete Home Study Course, Second Edition, by David Burch

Minggu, 09 Juli 2017

Free Download Celestial Navigation: A Complete Home Study Course, Second Edition, by David Burch

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Celestial Navigation: A Complete Home Study Course, Second Edition, by David Burch

Celestial Navigation: A Complete Home Study Course, Second Edition, by David Burch


Celestial Navigation: A Complete Home Study Course, Second Edition, by David Burch


Free Download Celestial Navigation: A Complete Home Study Course, Second Edition, by David Burch

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Celestial Navigation: A Complete Home Study Course, Second Edition, by David Burch

Review

BWS's regular columnist David Burch is the founder and president of Starpath Navigation in Seattle, Washington. A Fellow of the U.S. Institute of Navigation and the Royal Institute of Navigation, he has spent his career writing about and instructing mariners and sailors in the art and science of navigation. His book Celestial Navigation has recently been updated and reissued in a second edition. Although the original text was complete, Burch has been able to expand and improve the book both graphically and contextually. Designed to be a home study course in celestial navigation , the book takes you from the very basics of how to use a sextant to the most advanced calculations. The beauty of celestial navigation is the self reliance the skill provides sailors at sea. If you have a reliable time piece and a way to check time with a battery powered shortwave radio, you can determine your position on your own anywhere at sea. So, if you are days from landfall and struck by lightning, which shorts out all of your electronics, you can still make harbor safely and in a timely way using only the sun, moon and stars as your guide.Celestial navigation also links us with ancient mariners who first sailed across oceans and created the world's discovery and trading routes. These intrepid sailors were intimately familiar with the natural world around them and the significance in the earth's movement in the solar system and galaxy. Instead of sailing with heads down staring at LED screens, they sailed with eyes uplift ed to the sky, which is not a bad way to see the world. Celestial navigation is not hard. Using Burch's book as a guide, you will learn how to take and calculate noon sights, morning and afternoon sun sights, twilight moon sights and the classic dawn and evening star sights. You'll figure out how to use a nautical almanac and sight reductions tables so you can make the simple calculations. You will Learn how to use a universal plotting sheet to create lines of position , running fixes and the valuable "cocked hats" derived from three or more star sights. And, you will learn about the heavens. You will come to know the sun and moon in ways you never did before. You will learn to identify the brighter planets and tell them apart and to identify the primary navigation stars and the constellations they reside in . Along the way, you will know your place in the world a little better, both literally when at sea and figuratively every time you stargaze on a brilliant summer night. -- Bluewater Sailing Magazine, July 2015"...the second edition of a home study course that Burch has created that enables students to learn nor just the theory, but the practice of sight reduction and plotting.Burch is one of those really smart people who has a complete grasp of things celestial. He knows, as all good teachers know, how to communicate information in a manner that is not didactic, leading the student over the intellectual hurdles to confidence and , one hopes, understanding. Th e progression of information leads the student from LAN sights, plotting and ve1y clear instructions on the use of the sight reduction tables in the Nautical Almanac. Burch is not a luddite and doesn't believe celestial navigation is more valuable than GPS. He posits, though, that the learning of celestial is a welcome exercise for the mind that could keep the mariner out of trouble should there be a snafu with the power supply aboard a vessel at sea. What makes the study of celestial navigation so interesting is that it is a subject full of nuances and subtleties that appeal to a curious mind. The understanding of celestial navigation can be a portal to a greater appreciation of astronomy, the natural world and a deeper respect for the mind s char created its constructs. Far from being a waste of time or a drawing room exercise, the study of celestial navigation can be both practical and enlightening. Certainly David Burch has contributed much to removing the mystery surrounding the subject." -- Ocean Navigator Magazine"Among all the books in print on modern celestial navigation, including mine, this one is far and away the most comprehensive, more so than even the classic tomes-Bowditch's American Practical Navigator and Dutton's Navigation & Piloting. It is rich in graphics, detailed in explanation, extensive in examples. At logical points, there are quizzes to let you track your progress." -- Hewitt Schlereth, Author of Celestial Navigation in a Nutshell"I just wanted again to give you feed back on your books. I have just navigated Sydney to New Caledonia, and I was not only able to do it, but also taught others how too as well. Considering I am self taught from your book I am very impressed--not just on being able to do it, but that this stuff actually works! " -- Chris Q., Oct 11, 2018"Please accept my gratitude for your two books Celestial Navigation: A Complete Home Study Guide and Hawaii by Sextant. In the last twelve months, with the knowledge gained from your books and my trusty Tamaya sextant, I have cel naved across the southern ocean from Albany to Hobart and then across the Tasman Sea from Sydney to Auckland.I am a keen sailor who completes internationally in the Dragon class and have sailed from the age of nine but making fiends with the heavenly bodies has been a mind expanding experience of cosmic proportion. I am also now friends with Abel Tasman, James Cook, Matthew Flinders and William Bligh. What a gift." --Denis C., February 2018

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Product details

Paperback: 296 pages

Publisher: Starpath Publications; Second edition (March 11, 2015)

Language: English

ISBN-10: 0914025465

ISBN-13: 978-0914025467

Product Dimensions:

8.3 x 0.6 x 11 inches

Shipping Weight: 1.4 pounds (View shipping rates and policies)

Average Customer Review:

4.6 out of 5 stars

50 customer reviews

Amazon Best Sellers Rank:

#54,422 in Books (See Top 100 in Books)

All five are good, but only one really walks you through the actual steps, with examples, of cel nav. I wish I saw this book first. The beginning has just the right amount of theory, and then he jumps into the sextant, spending time on the vernier, actual old-school plotting, and then specific examples, ie., noon sighting, sun sighting, moon, and stars. Then there is a thick section of detailed "extra study" material, more or less like an appendix, filled with tips and tricks of all sorts. Finally, there is a glossary, examples, problems, answers, and copies of the forms he suggests you use from his firm. He even covers topics like "short dip" sightings, to use on a lake or land, when you are practicing and can't get out to blue water. This is critical for all us beginners....I am sure that if you go through this book carefully, work the problems, and so on, and then set up your cel nav station, you will be able to do a pretty good job of cel nav from start to finish without so much as a pocket calculator or GPS: just his material, an Almanac or equivalent, a good watch, and a pencil, paper and some plotting tools.I started with the e-book although another reviewer complained about the reproduction of the figures and the difficulty jumping around in the book while working the problems. Like the other reviewer of the ebook, I bought the actual book, and continue to study from the ebook when the regular book is not convenient.If you only have $30 to spend on Cel Nav literature, skip the rest, although they are all good, and go straight to Burch. The ebook is a good add-on, but not easy to work in, secondary to inherent problems with ebooks. Burch has managed to put a whole bunch more into one easy book than anyone else has.I "guarantee" you won't be disappointed.......Amateur boater in Southern California

By “prescriptive method” I mean that they show you a work form and tell you how to fill in the numbers without telling you what you are filling in or why. Some people prefer to learn this way. Personally I do not learn well from that sort of instruction. I have to understand what it is I am doing even if it is only in layman’s terms. However in Chapter 10 they do offer an overview.To be fair I must point out that this book is primarily intended to be a reference text for an instructor-led course, and perhaps with an instructor to answer questions it would work better.For home study you should start with Chapter 10. Chapter 10 is a good introduction to the basic concepts of celestial navigation. Then returning to the first nine chapters, where they provide the various forms and tell you where to find the numbers to put into those forms, you might not be quite so utterly lost.It is the nature of celestial navigation that there are a great many look-up tables that one must learn to use. I don’t see enough guidance in this book for beginners on how to interpret those tables. I am no stranger to look-up tables, but darned if I didn’t find many in both The Nautical Almanac and various Sight Reduction Tables to be initially confounding. Sure…once you see how they are laid out they are as dirt-simple to use as any look-up tables, but on first blush you can easily get confused.On the plus side Burch is quick to acknowledge many other beginners’ blunders and to point them out along the way. For an example: he is careful to explicitly teach how to add and subtract clock times and angles which at first can seem tricky when you have to carry over whole hours into the minutes or whole degrees into arc-minutes. Furthermore in various places throughout the book he will put in a notation along the lines of : “If you got the wrong answer go back and check this step for thus-and-such error.” A sign of a very experienced teacher, and a great comfort and help to those who are destined to make those blunders. (Myself included!)He also provides a great many practice problems with worked-out answers which are a huge help to any student taking any course in the subject. Even if you learn your celestial from some other source these worked examples would still be a good reason to purchase this book.Once you have got the concepts down (by use of this text or some other course) then moving along to Chapter 11 will reward you with a great wealth of advanced insight and interesting tips. I enjoyed Chapter 11 a great deal, but I already knew how to do celestial navigation when I read it.Regarding the Kindle edition: This book and course relies heavily on work forms. The work forms are actually very well laid out once you understand what it is you are looking for. Although I personally disdain reliance on work forms in preference for fully understanding what you are doing they would certainly be helpful in stressful or fatigued situations. Unfortunately it isn’t easy to flip back and forth in the Kindle book to the various forms, nor is it easy to flip back and forth to the snippets of the various tables from the Nautical Almanac and sight reduction methods. If you already understand that stuff the Kindle version is perfectly OK. You can enlarge any of the illustrations or tables and they are quite intelligible. On the other hand if you are hoping to execute the course with this book alone you would do better to acquire it in hard-copy format.The forms are also available at Starpath-dot-com and you really should buy yourself a hard-copy Nautical Almanac in any case – so you could tackle this particular shortcoming by downloading and printing out the forms and acquiring an almanac before you start. IMHO there isn’t a single course in celestial navigation that would not be greatly enhanced by having a hard copy Nautical Almanac on hand to thumb through even if it is a couple of years out of date.I highly recommend that any student of celestial navigation acquire this book, but I sincerely doubt that one can learn celestial navigation with this one book alone without an instructor to guide you. If an instructor is not available you will probably want to get a hold of a few additional books on the subject to supplement this one. However to be perfectly clear, I do not know of any other single book that will adequately teach you the subject on your own either. Chances are good that if you are attempting to learn this stuff on your own you will end up with at least a few books on the subject.The excellent features enumerated above far outweigh the few slight criticisms I have made so I rate this book five stars. It certainly deserves to be counted among the very best available on the subject.

I first bought this book on Kindle. It was useless. Impossible to read any of the tables or charts and difficult to move around as one must do with a text book. Amazon should know better than sell any home study course in Kindle version. Please credit my account for the Kindle version.The hard copy, on the other hand, is very good and I am making much better progress now learning Celestial Navigation. Along with the Nautical Almanac, Sight Reduction Tables, and How to use Plastic Sextants; I expect to never be lost again. So do buy all of David Burch's books - just restrict the Kindle to fiction.

Great book to learn Celestial Navigation. I did some in the USCG and I'm glad I found this book to get back into it. Sometime it's great to work with out all the new electronic wizardry.

My husband has taken this and run with it. He loves the book and makes me leave the room while he studies. Perfect.

I purchased this book after taking David Burch's class on weather. I found this to be a great brush up on Celestial Navigation and referred to it during the 2017 Transpacific Yacht Race.

Very easy to read. An excellent source for the beginner and a great refresher for others.

This is an excellent self-study course. Quite comprehensive.

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PDF Ebook The Longevity Economy: Unlocking the World's Fastest-Growing, Most Misunderstood Market

Rabu, 05 Juli 2017

PDF Ebook The Longevity Economy: Unlocking the World's Fastest-Growing, Most Misunderstood Market

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The Longevity Economy: Unlocking the World's Fastest-Growing, Most Misunderstood Market

The Longevity Economy: Unlocking the World's Fastest-Growing, Most Misunderstood Market


The Longevity Economy: Unlocking the World's Fastest-Growing, Most Misunderstood Market


PDF Ebook The Longevity Economy: Unlocking the World's Fastest-Growing, Most Misunderstood Market

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The Longevity Economy: Unlocking the World's Fastest-Growing, Most Misunderstood Market

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Audible Audiobook

Listening Length: 12 hours and 24 minutes

Program Type: Audiobook

Version: Unabridged

Publisher: Hachette Audio

Audible.com Release Date: November 7, 2017

Language: English, English

ASIN: B0773QXHCC

Amazon Best Sellers Rank:

There is a powerful message that Joe Coughlin delivers in his new book, that continues what Daniel Kahneman and Yuval Noah Harari have articulated. That is, the human mind is wired to concoct stories. And indeed, the human mind is not wired to make decisions based on facts and reasoning. Indeed Kahneman expresses pessimism for the human species on this count. Harari goes as far as to say that Homo Sapiens will be replaced by Homo Deus for this very reason.Coughlin uses this key understanding of the human mind's working to dismantle the "narrative" we have been using about old age. At the outset, Coughlin writes, "Old age (as a concept) is made up. Most of it was invented by human beings for short-term, human purposes over the past century and a half. Today, we’re stuck with a notion of oldness that is so utterly at odds with reality that it has become dangerous. It constrains what we can do as we age, which is deeply troubling, considering that the future of our older world will naturally hinge on the actions of the older people in it."Once this narrative sets in, as human beings we cannot look at old age in any other way. Kahneman would call this framing. Once old age is framed in our minds as frail and incompetent, it leaves no room for any other way of thinking about vast and an ever growing swath of society.There are two telling examples in the book. One is when the author is speaking about females being decision makers on key aspects of managing family affairs such as health care and doctors. An audience of well educated senior corporate professionals in the audience took exception to his observation. The narrative power of males being the "deciders in chief' was too deeply rooted to even tolerate this counter observation. Yet as Coughlin points out, the demographic future (of the human race) is female.The other example is even more pervasive and perhaps dangerous in the long run. There are many retirement villages being built all around the world. These villages are so complete that retirees flock to them. They have all the amenities to make life comfortable. The retirees are happy, the people who work there are happy and the developers of these villages are happy. What is not to like about this set-up?The flaw is in the narrative of old age that we have accepted without questioning it. To retire is to go away. To separate. To withdraw. That is the definition we all accept. Thus we are creating communes where people with experience, wisdom, vitality and a whole lot to offer are no longer active part of the larger society. With 20+% of the global population forecast to be in this category by 2050, that is a tectonic shift in what we are setting ourselves up for.Coughlin sees opportunity in all this. He terms this opportunity, which is also the title of his book - The Longevity Economy. Businesses can think afresh of the products and services to cater to this vast and growing segment to generate business growth and profit. That is larger than most countries on the planet. Coughlin shares examples of everything from apps to social networks to every day objects to services as creative examples that companies can develop and pursue.The book is well written and an easy read. It is full colorful anecdotes including the author's experiences at MIT, the US Government and working with companies all around the world. These anecdotes build upon each other, and one is left feeling inspired to go out and change the narrative on old age and re-integrate the entirety of the human age spectrum back into society.

I really enjoyed this book. The writing is fun and engaging, making for more of a page-turner than you might expect from the genre. Unsurprisingly given the author's pedigree, Coughlin's arguments for transcendent design and empathetic market engagement with the older generation come across less as argumentative than as the natural and obvious conclusion of years of research and experimentation.Notwithstanding the obvious conclusion from the book that, for most of us, "retirement" as currently understood will be soon regarded as a hilarious relic of the 20th century, the highlight of the book is the contrast between two deftly explored visions of retirement in today's America. This can be summarized as Florida vs. Massachusetts. In Coughlin's view, retirement to a sunny golf course and nightly sex parties is a dangerous option, in that its visibility and obvious appeal mask its external costs and crowd out more scalable and healthy options for seniors. And Coughlin makes a tight-knit community in Boston sound, let's say, highly actualizing. But intentionally or not, I don't leave the book longing for book club meetings and the occasional wine bar meet-up on Beacon Hill.Golf and sex parties sound like a lot more fun--I don't think the book disputes that. But Coughlin draws the reader to conclude that retirement itself is being re-designed both financially and culturally, with the result that we'll soon abandon the entire idea of just stopping your work and moving somewhere to play and hang out until you die. Moreover, even in Florida, seniors lack access to products and services that could greatly improve their lives, and could be provided at great profit to society as a whole. The idea that all people profit by embracing economic vitality well beyond "retirement age" is the point, and it sneaks up on you between anecdotes about stolen golf carts and ergonomic potato peelers.

I always enjoy reading a good deconstruction of outdated cultural narratives, especially when the historical context is clearly set out. This book combines thoughtful analysis with entertaining anecdotes, making clear how much is lacking in the social expectation of retirement and why the economy will reward those who can look beyond today's limited perspective.My only gripe is the lack of significant discussion of fitness products, which our society often assumes are for the young, but there are more older buyers every year as people gain more awareness of how to stay healthy. Some of the best ads I've seen that are aimed at middle-aged consumers are those for home fitness equipment, especially the machines that are Internet-enabled and allow users to participate in instructor-led virtual classes.

My main concern was given Dr Coughlin's speaking prowess, the book wouldn't capture his engaging speaking style (watch some of his YouTube clips- they're brilliant) but this book captures his voice and reads beautifully. He is equal parts enthralling and illuminating and his willingness to question a seemingly one sided "obvious age-old narrative" has created a new vista for which we should all be atunned. He has the ability to take very layered themes and distill them in an entertaining way. Simplifying the complex is Dr Coughlin's magic. If you like Malcolm Gladwell, Thomas Friedman or David McCullough- this will be right down your alley.

Superb book, flows with great stories and brilliant insights. Demographics are destiny and there are ample examples of how our demographics will shape society, business, design, medical care, and policy. Highly recommended.

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