Why American aircraft would reshape Royal Navy carrier doctrine

How would the war change if the Royal Navy began World War II with the same aircraft as the US Navy?

Britain would need different carriers, weapons integration, and operating doctrine; the change could not be treated as a simple aircraft swap.

The Devastator could not use British torpedoes in the required way, and American aircraft imposed different lift and hangar demands. Substituting aircraft therefore changes weapons integration as well as the shape of carrier machinery spaces and aviation facilities. Air groups express a fleet's doctrine, so adopting them would force Britain to rethink how strikes and reconnaissance were organized. The counterfactual becomes a different carrier system, not a simple exchange of one airframe for another.