navigational aid
marker that assists a traveler in navigation
radio beacon
radio transmitter to identify a location for navigation aid
day beacon
unlighted nautical sea mark
Lighted airway
navigational aid deployed in the United States
Ambrose Channel pilot cable
electromagnetic navigational aid
Chinaman's Hat
navigational aid and seal haul-out in Port Phillip, Victoria, Australia
automatic direction finder
marine or aircraft radio-navigation instrument
isolated danger mark
sea mark indicating a danger spot
light float
floating lighted navigational aid
foghorn
device that uses sound to warn vehicles of navigational hazards like rocky coastlines, or boats of the presence of other vessels, in foggy conditions
sunstone
ancient navigational aid
signal station
place on shore from which signals are made to ships at sea
geographical marker
physical marker used to identify and/or indicate geographic features
Navigation Structures at Frankfort Harbor
Navigation structures in Michigan, United States