Future Boy Conan (1978)

Season 1: Episode 8

Lana escapes and uses a lifeboat to save Conan. The gunboat boards the Barracuda and captures Dyce and his crew. Lana and Conan escape on the lifeboat. While trying to make it to the shore, the gunboat blows up the lifeboat, but Conan and Lana survive and make it to the nearby island, where they discover an old battlefield littered with tanks. Lana hears her grandfather by telepathy, and Conan and Lana set out to cross the desert.