What is the upper deck of an aircraft carrier called?

The upper deck of an aircraft carrier is referred to as the flight deck. This is the area where aircraft take off, land, and are launched from the ship. The flight deck is specifically designed to facilitate these operations and is equipped with various features such as catapults and arrestor wires to assist in the safe handling of aircraft.

In contrast, other areas of the aircraft carrier serve different functions. The main deck, while encompassing the flight deck, typically refers to the entire primary deck level, which includes areas not used for flight operations. The hangar deck, located below the flight deck, is where aircraft are stored, maintained, and repaired when not in use. The fore deck is generally a term used in nautical contexts to describe a portion of a ship toward the bow, but it is not specific to aircraft carriers. Therefore, the flight deck is the correct term to denote the operational area for aircraft.