RSE Actium

The RSE Actium was a, specifically of the , Romulan battle cruiser starship in service of the mirror universe's Romulan Republic in the 23rd century.

The Actium was one of three battle cruisers, along with RSE and RSE, that intercepted the ISS when it crossed from Klingon space to Romulan territory in 2293. In order to keep the presence of Excelsior a secret, Captain Hikaru Sulu (who had assumed the mirror Sulu's place on Excelsior) was forced to order his fighters to destroy the Romulans. (TOS game: Shattered Universe)