Why boarding a modern aircraft carrier is exceptionally difficult

Could a boarding party take control of a modern aircraft carrier?

It would be extraordinarily difficult because the attackers would have to secure and hold several separated control centers against a large crew.

Taking control of a modern carrier would require attackers to secure several separated centers of ship operation, including engineering, the flight deck, command-information spaces, and the bridge. British carriers add two island structures to that physical problem. A carrier's crew also gives the defenders a large pool of people, from roughly 800 on a British ship to about 5,000 on a large American carrier in the comparison given. Nuclear engineering spaces impose especially strict access and security controls, making a successful seizure extraordinarily difficult to sustain.