The US Navy is taking a significant step forward in its amphibious shipbuilding efforts, recently awarding Huntington Ingalls Industries (HII) ‘s Ingalls Shipbuilding $9.6 billion to construct four new ships.

According to reports, these shipbuilding contracts include three Flight II San Antonio-class amphibious ships (LPDs 33, 34, and 35) and one big-deck amphibious assault ship (LHA-10).

This came after a brief strategic pause in shipbuilding, with Congress and the Marines pushing for a fleet of at least 31 amphibious warships to meet operational needs.

Here’s what we know so far about the deal and what Congress thinks about these ships’ costs and technical risks.

Key Details of the Contracts

This latest amphibious warship procurements not only fill critical gaps in our Navy’s current fleet but also provide much-needed stability for Ingalls Shipbuilding and its workforce.

Moreover, building these ships on a predictable timeline ensures a steady flow of work for the shipyard and results in cost savings through economies of scale—about $901 million, according to Navy officials.

The contracts also follow recent deliveries of other San Antonio-class ships like the USS Richard M. McCool Jr. (LPD-29), which comes with advanced radar systems for air and missile defense.

Meanwhile, the future Helmand Province (LHA-10) will join big-deck amphibious assault ships currently being built at Ingalls, like Bougainville (LHA-8) and Fallujah (LHA-9).