Gargantia on the Verdurous Planet: Far Beyond the Voyage (Sub)
Watch Gargantia on the Verdurous Planet: Far Beyond the Voyage full episodes online enghlish sub
Other titler: Suisei no Gargantia: Meguru Kouro, Haruka
Synopsis: A 2-episode OVA for Suisei no Gargantia revealed during an announcement at AnimeJapan 2014.
More info: Myanimelist, wikipedia