navigational aids
Direction-finding equipment used
Navigational aids are devices, systems, or markers that help travelers determine their position and find their way.
The term applies across domains: at sea, navigational aids include lighthouses, buoys, and GPS; in aviation, radio beacons and runway lights; on roads, signs and mile markers.
The harbor's navigational aids were upgraded after the accident.
The phrase is often shortened to navaids in technical contexts, particularly in aviation and maritime industries.
- buoysAnchored floating signals
- starsLuminous celestial bodies
- lighthousesCoastal towers with lamps
- fog hornLoud coastal warning device
- sextantsAstronomical angle-measuring devices
maps · transponders · cairns · compasses · dead reckoning · gyroscopes · GPS devices · radar systems · astrolabe · road signs · chronometer · magnetic north · constellations · beacons · radio beacon · nautical charts · triangulation · sonar systems
navigational aidsnavigational hazards
Obstacles threatening safe passage
obstacles · obstructions · shoals · reefs · sandbars
navigational aidsfog
Low-lying cloud cover
whiteout · poor visibility · GPS jamming · will-o'-the-wisp · uncharted territory
navigational aidsnavigational hazards
Obstacles threatening safe passage
obstacles · obstructions · fog · whiteout conditions · signal jammers