01725cz a2200325n 4500 sh 85002544 DLC 20250804135223.5 080722i| anannbabn |b ana sh 85002544 (DLC)sh 85002544 (DLC)7602612 (DLC)sp 85002544 (DLC)406362 DLC DLC DLC VK381 VK397 Signaling VK1000 VK1249 Lighthouse service Aids to navigation ATON (Aids to navigation) Marine aids Marine signals Navaids Navigational aids (Nautical) g Marine service g Navigation g Signals and signaling Ice breaking operations Notices to mariners Kerchove, René de. International maritime dictionary. 2nd ed. 1961 ("Aid to navigation. A charted mark to assist navigators, such as buoys, beacons, lights, radio beacons, and the like. Generally, any information published for the assistance of mariners.") Wikipedia, July 22, 2008: Navigational aid page ("A navigational aid (also known as aid to navigation, ATON, or navaid) is any sort of marker which aids the traveler in navigation; the term is most commonly used to refer to nautical or aviation travel. Common types ... include lighthouses, buoys, fog signals, and day beacons. According to the glossary of terms in the United States Coast Guard Light list, an Aid to Navigation is any device external to a vessel or aircraft specifically intended to assist navigators in determining their position or safe course, or to warn them of dangers or obstructions to navigation")