A UNSC destroyer is part of the UNSC Navy, along with many other UNSC spacecraft. Weapons: Twin blaster cannons (x 2 one pair on each side), machine gun blaster cannons (x 20), dual missile launchers(x2), and arch pods(x 3). abilities: Guard key ships in a blocade, and detect movement of a sabre. other: hanger[s]: two (one on each side), crew: 5,000; one captian, one co. captian, 4,998 solders, ect. known destroyer[s]: UNSC Relier, UNSC Metal Pecker, "Covey" Killer, UNSC Canada.