USS Courageous (NX-81822)

The USS Courageous (NX-81822) was the first of the starships that saw service with the  during the 24th century. Originally built as a it was refitted with a tri-warp nacelle design and became the testbed for a hybridized quantum slipstream drive. Following the successful tests it entered service and was reclassifed as the first of the Courageous class. (Star Trek: The Courageous)