An
aeronautical chart is a
map designed to assist in
navigation of
aircraft, much as
nautical charts do for watercraft, or a
roadmap for drivers. Using these charts and other tools,
pilots are able to determine their position, safe altitude, best route to a destination, navigation aids along the way, alternative landing areas in case of an in-flight emergency, and other useful information such as
radio frequencies and
airspace boundaries. There are charts for all land masses on Earth, and long-distance charts for trans-oceanic travel.