Future Boy Conan (1978)

Season 1: Episode 25

Evading Lepka's attempts to eliminate them, Conan, Jimsy, and Dyce start inflicting critical damage to the Giganto. While Dyce and Jimsy eventually end up getting jettisoned inside the tail rudder, Conan confronts Lepka as he tries to get away in an escape pod. Despite Conan's attempt to save them, Lepka and the rest of his men are left to perish aboard the doomed Giganto. A week later, as the final stage of the cataclysm arrives, all the Industrians except the High Council mount the restored passenger ship and watch Industria sink into the sea.