The submarines spend 70 days at sea followed by 25 days in dock for overhaul. A US Navy study is assessing this option. The Ohio class submarine is equipped with the Trident strategic ballistic missile from Lockheed Martin Missiles and Space. The submarine has the capacity for 24 Trident missile tubes in two rows of 12. The three stage solid fuel rocket motor provides a range in excess of 11,000 km.
Missile guidance is provided by an inertial navigation system, supported by stellar navigation.
The Sperry Univac Mark 98 missile control system controls the 24 missiles. The Ohio class submarine is fitted with four 533 mm torpedo tubes with a Mark 118 digital torpedo fire control system. The torpedoes are the Gould Mark 48 torpedoes. The Mark 48 is a heavy weight torpedo with a warhead of 290 kg, which has been operational in the US Navy since 1972. Range is up to 50 km at a speed of 40 knots.