nautical almanac
Navigator's star guide
A nautical almanac is an annual publication containing astronomical data—positions of the sun, moon, planets, and stars—used by sailors to determine their position at sea.
Before GPS, celestial navigation depended on these tables: The navigator consulted the nautical almanac to calculate their latitude.
- ephemerisCelestial body position chart
- declinationAngular distance from equator
- sextantMaritime angular measurement device
- compassDevice showing cardinal directions
- magnetic northCompass-indicated pole direction
horizon line · astronomical tables · chronometer · celestial navigation · sun · longitude · moon · latitude · star chart · lunar phases · azimuth · astrolabe · tides · celestial sphere · equinox · tide table · solstice · bearing
navigational domain
nautical almanacroad atlas
Bound collection of maps
land survey · road map · topographic map · railway timetable · hiking guide