How AUKUS divides submarine design and construction

Will British and Australian submarine plans separate because US yards are struggling to build enough boats?

No; AUKUS already separates interim US-built Virginias from a joint future design likely to rely heavily on British technology and Australian construction.

American shipyard difficulties do not imply that Britain and Australia must abandon AUKUS for separate programs. Australia is buying interim Virginia-class submarines from the United States, while the future SSN-AUKUS design is expected to draw heavily on British capability, use reactor units built in Britain, and likely be assembled in Australia. The exchange also stresses the importance of independent government quality testing when a reduced supplier base weakens competition. Maintaining that testing capacity may look unprofitable, but it is far cheaper than replacing nonconforming metal across completed warships and submarines.