Guided Missile Submarines - SSGN

General Chracteristics of Guided Missile Submarines - SSGN are as Below:

Builder:	General Dynamics Electric Boat Division
Propulsion:	One nuclear reactor, one shaft
Length:	560 feet (170.69 meters)
Beam:	42 feet (12.8 meters)
Displacement:	16,764 tons (17,033.03 metric tons) surfaced; 18,750 tons (19,000.1 metric tons) submerged
Speed:	20+ knots (23+ miles per hour, 36.8+ kph)
Crew:	15 Officers, 144 Enlisted
Armament:	Up to 154 Tomahawk missiles, Mk48 torpedoes; 4 torpedo tubes