- 4 * Colt-Pielstick diesel engines, two shafts, 40,000 hp (30 MW)
- 2 * LCACs (air cushion)
- or 1 * LCU (conventional)
- 2 * 30 mm Bushmaster II cannons, for surface threat defense;
- 2 * Rolling Airframe Missile launchers for air defense
- 4 * CH-46 Sea Knight helicopters or 2 * MV-22 tilt rotor aircraft may be launched or recovered simultaneously
USS Harrisburg (LPD-30) will be the 14th San Antonio-class amphibious transport dock ship of the United States Navy. She will be the second ship in naval service named after the city of Harrisburg, Pennsylvania. Harrisburg is being built at Pascagoula, Mississippi, by Ingalls Shipbuilding. The ship will be the first Flight II variant of the San Antonio-class.
Ingalls has delivered 11 San Antonio-class ships to the U.S. Navy and has three more under construction including USS Harrisburg (LPD-30). The ship will be the 14th in the San Antonio class and the first Flight II LPD. USS Fort Lauderdale (LPD-28) launched in March and is scheduled to deliver in 2021.
The USS Harrisburg (LPD-30) will be the second U.S. Navy vessel named after the city of Harrisburg, Pennsylvania. The first was a troopship acquired by the U.S. Navy during World War I that served in commission from May 29, 1918 to September 25, 1919. That ship also served with the U.S. Navy in the Spanish-American War under another name. In addition to being the capital of Pennsylvania, Harrisburg is home to a number of Department of Defense facilities including the Naval Support Activity, Mechanicsburg.