1775 ⟶ Cook's Second Voyage Utilizes Harrison and Kendall Chronometers for Navigation
John Harrison H4 and Larcum Kendall K1 marine chronometers a...Year
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1775
🧭 Backstaff Invention by John Davis
Backstaff: Invented by Captain John Davis.⟶

NavigationExplorationMaritime HistoryAge of Discovery

🧭 Independent Invention of the Octant
Thomas Godfrey and John Hadley independently develop the octant⟶

NavigationAstronomyScientific RevolutionMaritime HistoryExploration


⏱️ Harrison's Chronometer Solves Longitude Problem
The problem of longitude was finally resolved by the fourth chronometer of John Harrison⟶

NavigationMaritime HistoryScientific InnovationExplorationAge of ExplorationMeasurement

🧭 John Harrison Completes Marine Chronometer
Marine chronometer invented.⟶

NavigationMaritime HistoryScientific RevolutionExplorationClockmakingAge of DiscoveryPrecision Engineering

🧭 Cook's Second Voyage Utilizes Harrison and Kendall Chronometers for Navigation
John Harrison H4 and Larcum Kendall K1 marine chronometers are used to measure longitude by James Cook on his second voyage (1772–1775).⟶

ExplorationNavigationMaritime HistoryScientific InstrumentsJames CookAge of Exploration
