The US Navy is struggling to maintain its nuclear submarine production program.

The Columbia-class submarine program continues to be a priority for the Pentagon in the coming time.

According to IHS Jane's, the US Navy is facing difficulties in delivering Virginia-class nuclear-powered fast attack submarines (SSNs), while maintaining the existing fleet, as well as implementing the Columbia-class ballistic missile submarine (SSBN) construction and delivery program on schedule.

Among them, the Columbia-class submarine continues to be the Pentagon's priority to promptly replace the Ohio-class submarines in the US fleet.

A recent report by the US Congressional Budget Office (CBO) found that meeting Australia's submarine supply requirements under the Anglo-American-Australian Alliance (AUKUS) agreement is likely to impact the future goals and needs of the US submarine fleet.

“There’s been a lot of discussion about AUKUS, and obviously we’re going to do everything we can to support our customers on that. But the reality is the (submarine) supply chain continues to be fragile,” said Jason Aiken, executive vice president and chief financial officer of General Dynamics. General Dynamics Electric Boat is one of two manufacturers of the Virginia- and Columbia-class submarines.

Mr. Aiken said his company had to make every effort at the present time to meet the needs of submarines for both the US and its Australian partners under the AUKUS agreement.

"We have a lot of work to do to get the entire submarine industry back to the rate of delivering two Virginia-class submarines per year," while delivering more than two Columbia-class submarines per year on time, and then AUKUS, Mr. Aiken said.

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