Why the US Navy would favour more SSNs over diesel boats

Would a larger Chinese carrier fleet push the US Navy back toward diesel-electric submarines?

The United States would probably expand its SSN force instead, while allied diesel boats could release British and French nuclear submarines for Pacific deployments.

The scenario follows the US Navy's existing industrial and operational preference for nuclear attack submarines. Additional SSNs are the likely American response to a larger Chinese carrier force. A coalition alternative could have Britain or France add conventional submarines for nearby duties, freeing nuclear boats for long-range Pacific operations. The exchange shows how alliance force structure can redistribute missions without every navy buying the same submarine type.