Joined the Service in 2006 Producers: Ingalls Shipbuilding Price: *$1.6 billion The USS San Antonio stands as a testament to the U.S. Navy’s commitment to versatility and multi-mission capability. Launched as the lead ship of its class, this amphibious transport dock, built by Northrop Grumman Ship Systems, entered service in 2006. With a design focusing on deploying Marines in amphibious assaults, the LPD-17 can carry roughly 800 troops, along with their necessary vehicles and equipment.