Flush-deck carriers struggled to route hot boiler gases without disturbing pilots or consuming valuable hangar space. Contemporary experience found that a short, narrow, streamlined island caused little interference over the usable portion of the flight deck. The island also permitted a wider, cooler hangar and concentrated navigation, mast, and exhaust functions in one structure. Designers still had to manage asymmetrical weight and a heeling moment, but the operational gains made the island arrangement the prevailing solution.
Notable Point · 1:17:52-1:20:05
Why the island layout became the carrier standard
A 1934 design assessment shows why compact islands beat flush decks despite asymmetry and stability concerns.