The IRW Chilvas is a Romulan Warbird assigned to the Maelstrom under the command of Captain Terrik. In 2378, with the help of the IRW Soryak, it attacked the USS Sovereign, USS Dauntless (NCC-71879), IKV Rankuf and IKV Trayor in the Tevron system. Later it worked with the Sovereign, USS Geronimo (NCC-69302) and IKV Ho'hegh to destroy station Litvok Nor at Alioth VI. (ST video game: Bridge Commander)