Air Force One is well known as the aircraft of the President of the United States. Technically, it is any US Air Force aircraft in which the President is a passenger. When the Preaident is aboard an aircraft of another branch of the military, that service’s name is used. Marine One is the current helicopter of choice for the commander-in-chief, but Army One has appeared many times on the White House lawn. 

Only one vessel has ever borne the name Navy One.  A Lockheed S-3 Viking held the coveted call sign Navy One for a very brief time as it flew President George W. Bush to the aircraft carrier USS Abraham Lincoln off the coast of San Diego, California on May 1, 2003. The President, himself a former Navy pilot, was at the controls for a portion of the flight, but the takeoff and landing was conducted by Commander Skip Lussier. 

That S-3 was retired from service and placed on display at the National Naval Aviation Museum in Pensacola, Florida on July 17, 2003.

To date, no aircraft has yet to bear the call sign Coast Guard One. 

When the President flies aboard a civilian aircraft, it becomes Executive One.