Why did some early carriers lack a full-length main flight deck?
Short answerThe lower flying-off deck let fighters leave directly from the hangar for what designers hoped would be a faster air-defence launch.
NotesSome early carriers lacked a full-length main flight deck because designers wanted a lower flying-off position connected directly to the hangar. In theory, fighters could move straight out and launch more quickly. The arrangement was intended to accelerate the ship's air-defence response before later practice standardized other layouts. The unusual multi-level decks were therefore operational experiments rather than incomplete versions of the later carrier.