Mission and future air groups define the carrier

Naval aviation evolved from reconnaissance through spotting, counter-reconnaissance, torpedo attack, and bombing, so no single hull feature defines every useful carrier. Mission determines the aircraft, and the aircraft in turn drive deck, hangar, launch, recovery, maintenance, and stores requirements. A carrier may serve for several decades and encounter two or three generations of aircraft, including a growing share of large reusable drones. Across those changes, its enduring function is to store, maintain, launch, and recover aircraft repeatedly, so the ship's value lies partly in the air groups it can support later. Designers must therefore integrate ship structure, propulsion, electrical capacity, and upgrade margins rather than optimize only for today's air group.