D'deridex-class

The D'deridex-class is the workhorse of the space navy of the Romulan Star Empire from the 2360s through the Dominion War. Like most Romulan warships, the D'deridex-Class is equipped with a cloaking device. At over a kilometer in length, D'deridex-class ships are exceptionally large for starships of the Alpha Quadrant.

Unlike Federation starships that use matter/anti-matter reactors for main power, Romulan Warbirds like the D'deridex-class derive their power from an artificial quantum singularity.