Y is for Yamato

It's the year 2199, and an alien race is raining radioactive meteorites onto the Earth, rendering the planet's surface uninhabitable and forcing the population underground. All seems lost... until a discovery gives mankind one further slim chance to save the planet. All efforts go into restoring the hull of a battleship that was sunk during World War II. This becomes the Space Battleship Yamato, and supplemented with the installation of a new type of propulsion system - the wave motion engine. The ship then sets off on its journey to the planet Iscandar -  there's a device there that can heal the ravaged Earth...

Space Battleship Yamato ( 宇宙戦艦ヤマト ) is a Japanese science fiction anime series. The name of the ship may be more familiar to US and UK audiences as it was also used as the name of one of the Enterprise's sister ships in Star Trek: The Next Generation (NCC-1305-E).