''The Zuiun Model 12 is an improved, high-performance version of the reconnaissance seaplane Zuiun.<br>This particular aircraft saw service with the 634th Air Group formed for use on the Ise-class aviation battleships. | ''The Zuiun Model 12 is an improved, high-performance version of the reconnaissance seaplane Zuiun.<br>This particular aircraft saw service with the 634th Air Group formed for use on the Ise-class aviation battleships. |