Naval Historywith Dr. Alex

Q&A · 7:37:21-7:38:05

AUKUS submarine design decisions and fleet size

The November 2025 discussion places SSN-AUKUS in a design-shaping phase, with a potentially larger British order still under consideration.

AUKUSForce StructureNuclear SubmarinesRoyal NavySSN Aukus
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Question

When will the AUKUS submarine design be complete?

Short answer

No completion date was given in November 2025; design-shaping decisions and the size of a possible larger British order were still under discussion.

Notes

In November 2025, SSN-AUKUS was described as approaching an announcement while decisions about the design's shape were still being made. No completion date was supplied. The size of Britain's eventual order was also under discussion. An expansion of British defence capability could lead to more submarines and change the balance of the program.