The Gladius-class frigate was a type of Romulan Empire warship operated in the 23rd century. Variants could be classed as either a frigate or destroyer.
History and specifications[]
The ship possessed only a single warp nacelle, comparable to Starfleet's Saladin-class, a starship also in the same frigate or destroyer weight category. Gladius vessels were armed with disruptor weapons and plasma torpedoes, carrying a complement of Romulan marines. (ST video game: Klingon Academy)