Harrison completed his first chronometer in 1735 and submitted it for the prize. Several unfortunate disasters at sea, caused ostensibly by poor navigation, prompted the British government to create a Board of Longitude empowered to award £20,000 to the first man who developed a chronometer with which longitude could be calculated within half a degree at the end of a voyage to the West Indies. ![]() Harrison, the son of a carpenter and a mechanic himself, became interested in constructing an accurate chronometer in 1728.
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