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showing 2 library results for 'h4'

Kendall's longitude "Lost at sea: every mariner's fear. Maritime navigational tools could find latitude, but finding longitude remained elusive until Harrison developed the reliable sea clock, H4. Building on H4's success, Kendall made a series of nautical timekeepers, K1, K2 and K3. This is the story of the K2 timekeeper; its adventurous voyages, the people it touched, and its place in history. K2's first voyage, accompanied by the young Nelson, was nearly its last in the crushing Arctic ice. The next two expeditions saw it survive kidnappings, nautical intrigue, and gunpowder plots of the American revolutionary wars. The slave coasts of Africa followed. Bligh took K2 on the Bounty, but lost it in a fight with the mutineers in 1789. It was recovered by an American Quaker from Nantucket, only to be stolen by the Spanish. It rode on mules along the Andes before sailing into the Opium Wars. K2 finally returned to Greenwich in 1963."--Provided by the publisher. 2019. • BOOK • 1 copy available. 527
Longitude's legacy : James Harrison of Hull 1789-1875 :turret clockmaker :the last of the Harrison clockmakers /Chris McKay. "The story of John Harrison is well known. How he created an accurate regulator, made the sea clocks H1, H2, H3 and H4, has been documented in academic books, in popular literature, film and how he was the father of the marine chronometer. His quest to win the ¹20,000 prize, as defined in the Longitude Act of 1714, runs through the John Harrison story. However, little has been written about the other members of his family. His brother James was a very skilled and pragmatic person. From him three generations followed all involved with bells and clocks. The third generation, James Harrison of Hull, was the last of the Harrison clockmaking line." 2015. • FOLIO • 1 copy available. 92HARRISON