Satsuma

The Satsuma is a military submarine used in the film, Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack.

History
The Satsuma first appears at the beginning of the film when it is sent to find a lost U.S. submarine. It is later dispatched to kill Godzilla with the D-03 Missile. It is used to enter Godzilla's body and fire the missile from the inside, eventually killing him.