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The article discusses the U.S. Navy's validation of 3D printing technology, also known as additive manufacturing, for creating parts for ships at sea. It mentions that the U.S. Navy is exploring the use of larger metal 3D printers to fabricate replacement parts on demand, which can save time, reduce costs, and improve operational readiness.

The article delves into the critical shortage of qualified mariners impacting the Military Sealift Command (MSC), attributing it to a lack of mid to senior-level licensed mariners and difficulties in attracting junior personnel. It mentions that amidst challenges exacerbated by the global pandemic, MSC is implementing initiatives to improve quality of life for mariners, and streamline personnel management, aiming to address manpower issues and sustain operational readiness effectively.