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Web13 nov. 2024 · Marine Chronometers: The Clocks That Changed the Course of Globalization. A marine chronometer by John Harrison, crafted between 1761 and … To determine a position on the Earth's surface, it is necessary and sufficient to know the latitude, longitude, and altitude. Altitude considerations can naturally be ignored for vessels operating at sea level. Until the mid-1750s, accurate navigation at sea out of sight of land was an unsolved problem due to the difficulty in calculating longitude. Navigators could determine their latitude by measurin… WebThe marine chronometer was essential in telling time and determining the ship’s position by celestial navigation. By comparing the Greenwich Mean Time (GMT) and the current location’s time found through observations, sailors were able to determine the longitude. Let’s dial back a bit. brouse nyaa