Navigation

3 inventions

Compass

Navigation206 BC-220 AD

The magnetic compass was first used for divination, not navigation. Chinese sailors began using it f...

GPS

Navigation1978

The first GPS satellite launched in 1978. Full constellation of 24 satellites completed in 1993. Ori...

Chronometer

Navigation1761

Harrison spent 31 years building clocks accurate enough for longitude calculation. H1 through H4 pro...