JEM Bolster

The JEM Bolster was a Romulan starship, a bird of prey in Breen Confederacy service in the 24th century. ( mission: "Breen Barrier")

History
During the "Breen Barrier" conflict between the Federation and the Breen Confederacy, due to the blockade instigated by the Breen Militia to prevent Starfleet from extraditing a Breen prisoner to the Romulan Star Empire, the JEM Bolster was part of the experimental fleet of derived spaceships specifically designed for this war. The Malem-class bird-of-prey attempted to block ships of Battle Group 1, Battle Group 2,  Battle Group 3,  and Battle Group 4 from tearing into the Breen heartland, and reaching Romulan space, in the Newardis and Tricert systems. ( mission: "Breen Barrier")

Specifications
Around stardate 73XX.6 (circa 2377), the Bolster was rated a level 4 battle group bird-of-prey. Its deflector shields were rated 550, while the structural integrity field, or hull strength, topped at 395. ( mission: "Breen Barrier")