During the mid-2360s, the Deranas was commanded by Commander Tomalak. (ST reference: Star Trek Encyclopedia, CCG reference: Second Edition, Decipher RPG module: Starships) In 2366, the Deranas violated the Romulan Neutral Zone in order to rescue the crew of the scoutship, Pi, which had crash-landed on Galorndon Core. (TNG episode: "The Enemy") The Star Trek CCG named this vessel Deranas, but the reference book Starships called it Trennis.