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John Harrison (3 April [O.S. 24 March] 1693 – 24 March 1776) was an English carpenter and clockmaker who invented the marine chronometer, a long-sought-after device for solving the problem of calculating longitude while at sea. Harrison's solution revolutionized navigation and greatly increased the safety of long-distance sea travel.
John Harrison (born March 1693, Foulby, Yorkshire, Eng.—died March 24, 1776, London) was an English horologist who invented the first practical marine chronometer, which enabled navigators to compute accurately their longitude at sea.
- The Editors of Encyclopaedia Britannica
Visit the clocks that changed the world and the man behind them. Learn about the revolutionary Harrison clocks that allowed ships to determine their longitude at sea and the challenges they faced.
Learn how John Harrison, a self-taught carpenter and clock maker, created four remarkable timepieces that helped find the ship's longitude at sea. Discover his challenges, trials, rewards and legacy at Royal Museums Greenwich.
Mar 14, 2023 · Learn how John Harrison invented an accurate marine chronometer that enabled mariners to measure their longitude at sea. Discover the history and challenges of clockmaking and navigation in the 17th and 18th centuries.
- Mark Cartwright
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John Harrison (1693-1776) was a carpenter and watch-maker who invented the marine chronometer, a device that enabled ships to measure longitude at sea. Learn about his life, his challenges, his achievements and his legacy in this biography.
Aug 1, 2018 · John Harrison – the problem-solving genius whose clocks saved lives. John Harrison, a carpenter and self-taught clockmaker, spent six decades of his life problem solving as he progressed towards his ultimate triumph—the first accurate marine chronometer.
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