What is "gotengo"

The , also known in the West as Atragon, is a fictional submarine battleship that has appeared in several tokusatsu films of Toho Company, Ltd., beginning with Atragon in 1963. It was first conceived by author Shunrō 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. The Gotengo also makes an appearance in the film for Toho's The War in Space and Chousei Kantai Sazer-X, Chousei Kantai Sazer-X: Fight! Warriors of the Stars. While the name of the ship is recited as "Goten-gō" in Japanese, it should be rendered as "Goten" in English; as the suffix, 号 (gō), simply denotes the object as a ship.