Philly Shipyard has secured another US government contract.

The Pennsylvania yard will make repairs to the government-owned 33,640-dwt ro-ro USNS Charlton (built 2000), having secured a contract from Patriot Contract Services.

The USNS Charlton is part of the US Navy's Military Sealift Command and carries tanks, armoured personnel carriers, tractor-trailers and other equipment and supplies to conflict areas worldwide.

"This is a great win for our shipyard and demonstrates our ability to acquire substantial repair jobs going forward," president and chief executive Steinar Nerbovik said.

"We look forward to working with Patriot as we continue on our journey as a strong partner for government projects."

The work will be done in the third quarter, the company said.

Financial details of the deal were not disclosed.

"Patriot is excited to further support US shipyards on behalf of [the Military Sealift Command] and, specifically, Philly Shipyard's growth platform and deepening domestic expertise," Patriot chief executive Ryan Libhart Pereyda said.

Aker Capital-backed, Oslo-traded Philly Shipyard said the USNS Charlton work was the third repair contract for the once-idle yard that pivoted towards government work alongside commercial shipbuilding in the second half of 2019.

Its first was for the 49,000-gt fast supply ship Anteras (built 1973) in August 2019.

Philly Shipyard also secured contracts with the government for four national security multi-mission vessels (NSMMV), one each for SUNY Maritime College, Massachusetts Maritime Academy, Texas A&M Maritime Academy and Maine Maritime Academy.

The ships are worth about $300m each.

There is a fifth potential NSMMV available for order, bringing the total contract to $1.5bn.