HMS Courageous shows the challenge of preserving a nuclear submarine

Can a British nuclear-powered submarine be preserved and opened as a museum ship?

Yes. HMS Courageous was the preserved example discussed in 2021, but reactor management and safe access made full public opening a long-term project.

The answer initially searches for the correct boat and then identifies HMS Courageous, a Churchill-class nuclear submarine, as the preserved example at Devonport. In the state described by the 2021 stream, limited tours reached only part of the boat while the heritage project worked toward broader access. Cutting openings, managing the reactor compartment, and eventually removing or isolating nuclear machinery make preservation slower and more expensive than displaying a conventional ship. Britain had a nuclear submarine available for museum access, but conserving the whole vessel remained a long engineering project.