...looks big enough to land aircraft in there.
In WWII. the US Navy bought several Great Lakes steam ships, cut off most of the superstructure, built a wooden deck, and used them to qualify pilots for carrier operations. They were not real aircraft carriers, just slow moving landing strips.
The Navy used the ships to train not just pilots, but also aircraft carrier deck crew. As a bonus, the training carriers also supplied aircraft damaged by nervous trainees, to a Navy aircraft repair school, after moving them by crane to a trailing barge.