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Destroyers and Guided Missile Destroyersback to Breakdown of a Battlegroup Destroyers and guided missile destroyers are fast warships that help safeguard larger ships in a fleet or battle group. Destroyers primarily perform anti-submarine warfare duty. Guided missile destroyers, on the other hand, can be used in both anti-air and anti-surface warfare. General Characteristics, Arleigh Burke class Power Plant: Four General Electric LM 2500-30 gas turbines; two shafts, 100,000 total shaft horsepower. Length: 466 feet (142 meters) Beam: 59 feet (18 meters) Displacement: 8,300 tons full load Speed: 31 knots (35.7 mph, 57.1 kph) Aircraft: None. LAMPS III electronics installed on landing deck for coordinated DDG 51/helo ASW operations Crew: 23 officers, 300 enlisted Armament: Standard missile; Harpoon; Tomahawk ASM/LAM; six Mk-46 torpedoes (from two triple tube mounts); one 5"/54 caliber Mk-45 (lightweight gun); two 20mm Phalanx CIWS Date Deployed: July 4, 1991 (USS Arleigh Burke) Breakdown of a Battle Group | Women on the Carrier | Behind the Scenes Resources | Transcript | Site Map | Battle Alert Home Editor's Picks | Previous Sites | Join Us/E-mail | TV/Web Schedule About NOVA | Teachers | Site Map | Shop | Jobs | Search | To print PBS Online | NOVA Online | WGBH © | Updated October 2000 |