Considered a navigational aid to ships entering the harbor, the statue was first administered by the U.S lighthouse Board before eventually falling under the jurisdiction of the National Park Service.
The priority of the coast guard is in repairing navigational aids.
"radar, navigational aid and communication device"
radar and navigational aids system
This, he says, is proof that the landmarks were deliberately created as navigational aides. Many were built within sight of each other and provided a simple way to get from a to b.
The crash was a direct result of inadequate navigational aids.
Again, most breadcrumbs provide not only a navigational aid, but a navigational control as well: They not only show where in the data structure a visitor is, but they give him tools to move to different nodes in the structure in the form of links.
The utility model relates to a free-floating light beacon of navigational aid on water in the sea, a river, or a harbor.
navigational aids and bridge system
Not having proper navigational aids the pilot had been unaware of the changing conditions and had flown the plane right into the eye of the tropical storm.
Negligence or other wrongful acts in the exercise of the functions of departments responsible for the maintenance of beacons or other navigational aids.
