The , also known in the West as Atragon, is a fictional flying multipurpose warship that has appeared in several tokusatsu films of Toho Company, Ltd., beginning with Atragon in 1963.
It was first conceived by author Shunrà  Oshikawa in his 1899 novel Kaitei Gunkan ("Undersea Battleship"), of which Atragon was an adaptation produced by Toho Studios. The submarine is heavily armed and armored, but its trademark tactic is to ram and sink enemy ships. In cinema, the submarine is easily identifiable by the enormous drill on its bow; it is also notable for being able to burrow underground and fly.
For the 1977 film The War in Space, the Gotengo was redesigned as a space battleship, but containing the basic design elements as well as new weapons (such as an detachable drill which acts as a very destructive projectile weapon) to fight off an evil alien invasion force on Venus.
For the 2004 film ', the Gotengo is used mostly for battling monsters. For instance, in the first sequence it is battling the monster Godzilla in the 1960s, resulting in Godzilla's burial under hundreds of feet of ice. Immediately after the opening credits, the upgraded and futuristic version of it known as the New Gotengo is locked in battle against the sea dragon Manda in the 2000s, which the ship defeats with an emergency maneuver through an underwater volcano and a combination of the Absolute Zero Cannon and drill. Later on, during the Xilien-induced monster attacks on major cities, the New Gotengo is dispatched to destroy them. However, the only weapon that truly works to destroy the alien threat is Godzilla himself.
One year after Final Wars, in the 2005 film ', the Gotengo is described as a superweapon that was near-completion, the Gotengo is launched early to assist the Sazer-X team in fighting against the Bosquito threat.