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Marine chronometer

A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation. It is used to determine longitude by comparing Greenwich Mean Time (GMT) and the time at the current location found from observations of celestial bodies. When first developed in the 18th century, it…

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Industry
Transportation
Application
Timekeeping
Classification
Clock
Invented
1761
Inventor
John Harrison
Powered
No

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Marine chronometer use today

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Marine chronometer

Nodes122
Edges121
Triples174
Avg. degree1.98
Density0.016393
Components1

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Marine chronometer

Top relations

has method · 42
Marine chronometer → All, Allied, Although, Around, Aviation, British, Despite, Drei-Pfeiler Werk Einheitschronometer, During, East Germany, Einheitschronometer, From, German, Germany, Hamilton, Hamilton Model, Hamilton Watch Company, Hamilton's, Horological, In Germany
related to First examples · 33
Marine chronometer → Arcanum Navarchicum, Attempts, Charles, Charles II, Christiaan Huygens, Colbert, Derham's, During, England, English, France, God, He, Henry Sully, Hooke, Hooke's, Huygens, In, It, Jean-Baptiste Colbert
related to history · 23
Marine chronometer → Altitude, As, Earth, Earth's, For, Galileo's, Gemma Frisius, Johannes Werner, Jupiter's, Most, Navigators, North Star, Northern Hemisphere, Observation, Polaris, Practical, Prime Meridian, The, The Dutch, This
related to Historical significance · 22
Marine chronometer → Admiralty, Britain, British, British Empire, British Royal Observatory's Chronometer, Department, Dutch, For, French, In, India, Portuguese, Rating, Royal Navy, Seven Years' War, Ship's, The, These, They, Time Department
related to Further development · 17
Marine chronometer → Although, Britain, Ferdinand Berthoud, France, Harrison, Harrison's, In, In France, John Arnold, Le Roy, Le Roy's, Pierre Le Roy, Rupert Gould, The, This, Thomas Earnshaw, Thomas Mudge
related to External links · 15
Marine chronometer → Australia Archived, Barraud, Chronomètre, French, German, Glashütter Uhrenbetriebe VEB, GreenwichHenri MOTEL, Marine, Marine Chronometer Kaliber, National Maritime Museum, National Museum, Presentation, Short MPEG, Wayback Machine, WiktionaryWeb
Application · 1
Marine chronometer → Timekeeping
Classification · 1
Marine chronometer → Clock
Industry · 1
Marine chronometer → Transportation
Invented · 1
Marine chronometer → 1761

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Important terminology

chronometer marine chronometers time navigation sea balance longitude first accurate used work use made spring mechanical escapement celestial one production

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Marine chronometerApplicationTimekeeping1.00infobox
Marine chronometerClassificationClock1.00infobox
Marine chronometerIndustryTransportation1.00infobox
Marine chronometerInvented17611.00infobox
Marine chronometerInventorJohn Harrison1.00infobox
Marine chronometerPoweredNo1.00infobox
Marine chronometeris aprecision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation0.90text
those set by the Contrôle Officiel Suisse des Chronomètresinstance ofThe observatory testing regime typically lasted for 30 to 50 days and contained accuracy standards that were far more stringent and difficult than modern standards0.80text
Ulysse Nardin made great strides toward incorporating modern production methodsinstance ofSwiss makers0.80text
using fully interchangeable partsinstance ofSwiss makers0.80text
but it was only with the onset of World War II that the Hamilton Watch Company in the United States perfected the process of mass productioninstance ofSwiss makers0.80text
which enabled it to produce thousands of its Hamilton Model 21instance ofSwiss makers0.80text

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