Originally the Taiyō class ships were Nippon Yusea Kaisya (N.Y.K.) luxury liners. They were to serve European passengers, but with Europe at war the Japanese Navy decided to take over the ships and make them into carriers.
The Taiyō class were flush deck escort aircraft carriers with two elevators. There were no catapults.
There was one hangar, 300' long, in the Taiyō class ships.
The original diesel engines were replaced by turbines.
The uptakes were routed to starboard and exhaust when out funnels that were angled downwards.