The US Navy has awarded a $98m cost plus fixed fee advance procurement contract modification to Huntington Ingalls Industries for long-lead materials for LPD 27.

The contract also includes the purchase of major equipment for the new ship, such as main engines, diesel generators, electrical switchboards, deck equipment and fire extinguishing systems.

The 684ft-long San Antonio-class ships have a displacement capacity of 25,000t and can carry 800 troops, along with the capability of transporting and debarking air cushion or conventional landing craft.

The ships will primarily be used to deploy the combat and support elements of Marine expeditionary units and brigades, and will support amphibious assault and expeditionary warfare missions through the first half of the 21st century.

The US Navy awarded a contract for the construction of 11 San Antonio-class ships, of which the first five have been delivered and the rest are at various stages of completion.

The 11 ships will functionally replace more than 41 vessels, providing the navy and marine corps with modern, sea-based platforms.

Work will be conducted by the company’s facility in Pascagoula, Mississippi, US.