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The Illustrated Longitude recounts in words and images the epic quest to solve the thorniest scientific problem of the seventeenth and eighteenth centuries. Throughout the great age of exploration, sailors attempted to navigate the oceans without any means of measuring their longitude: All too often, voyages ended in total disaster when both crew and cargo were captured or lost upon the rocks of an unexpected landfall. Thousands of lives and the fortunes of seafaring nations hung on a resolution.

To encourage a solution, governments established major prizes for anyone whose method or device proved successful. The largest reward of £20,000-truly a king's ransom-was offered by the British Parliament in 1714. The scientific establishment-from Galileo to Sir Isaac Newton-had been certain that a celestial answer would be found and invested untold effort in this pursuit. In stark contrast, one man, John Harrison, imagined and built the unimaginable: a clock that solved the problem by keeping precise time at sea, called today the chronometer. His trials and tribulations to win the prize throughout a forty-year obsession are the culmination of this remarkable story.

The Illustrated Longitude contains the entire original narrative of Longitude, redesigned to accompany 178 images chosen by Will Andrewes: from portraits of every important figure in the story to maps, diagrams, and photographs of scientific instruments, especially John Harrison's remarkable clocks. Andrewes's elegant captions emphasize the scientific and historical events surrounding the images, and they tell their own dramatic story of longitude, paralleling and illuminating Dava Sobel's memorable tale.

Average Customer Rating:

A Wonderful Book	Customer Rating:
This is a book that I have enjoyed reading and viewing the great illustrations. I have learned so much about a topic of which I knew next to nothing.

Longitude; long on interest

Customer Rating:

Longitude tells a fascinating, little-recalled history of the invention of navigational methods necessary to sail the globe accurately. Inventor John Harrison solves the dilemma of adjusting for the difference between longitudinal distances at the equator, and north or south to the poles. Ancillary details include how scurvey was conquered, economic imact of wayward sailing voyages, and social aspects of world-wide trade on the high seas. The illustrated version is a pleasure to the eye.

Much better with Andrewes illustrations	Customer Rating:
I met William Andrewes at a talk about his longitude dial. Never read Dava Sobel before and found the text week or at least week without the illustrations. The history in these documents and images of paintings made this book a don't put it down event. I've even used some of the history noted in public talks on astronomy. Highly recommended. I've shared it with several colleagues. John S.

Entertaining insight in longitude problemsolving

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An easy to read and enjoyable (hi)story about the efforts that have been made in the past centuries to find an way of navigating at sea. Every aspect finding the longitude has been covered. The book contains a lot of pictures and graphics that deepens out some (technical) background issues. It provides just enough details so that the subject is well understood, but no too much, making is suitable for every interested reader. So, if you are interested in navigating, reading this book gives you an good insight in the amount of work people have done in the past to make that possible.

One way to describe persistence: William Harrison

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As an "electronic geographer" (geographic information systems... computerized mapping... operator and manager), I was immediately attracted to Sobel's story upon it's original publication in 1995. Technically, navigationally, and economically speaking this is, as others have stated, a truly epic and civilization-changing story that is well and readably told by Sobel. On the first read I was awestruck to learn that craftsmen of the 18th century could make timepieces of the accuracy that Harrison achieved. Then further amazed to learn they were made portable and durable enough to withstand the rigors of years of service at sea. As I read Sobel's original book my curosity about what these amazing pieces of incredible craftsmenship (art?) LOOKED LIKE was a continual distraction. The "Illustrated Longitude" delightfully sates the curosity that Sobel's text so pleasantly gives rise to.