The I.S.S. Intrepid (NCC-74621-B) is an Intrepid-class Science Vessel and the mirror universe counterpart of Federation Starfleet's U.S.S. Intrepid. She takes part in the Terran Empire's invasion of the prime universe.
The Intrepid was removed from the game and replaced with the I.S.S. Star Treader in mid-to-late 2012.