HMS Achilles was a Homer-class battlecruiser of the Royal Manticoran Navy. In 1903 PD, the Achilles was a part of Battlecruiser Squadron 15 and commanded by Captain Oscar Weldon. The vessel was a squadmate of the HMS Cassandra. In 1904 PD, the ship was transferred to Battlecruiser Squadron 5 as Commodore Isabella Banton's flagship for the second division. In 1905 PD, the Achilles and the Cassandra were able to defeat the rest of the squadron during a gunnery excerise. The Achilles was destroyed with all hands by Havenite missile fire in the First Battle of Hancock. (HH3)