The Aichi M6A Seiran was designed as a float plane to be operated from the large Japanese I-400 type submarine. When deployed from the submarine, it would attack enemy ships. For storage in a watertight compartment, the wings could be folded and the floats could be removed as well. First flight was in 1943 with a first eight aircraft completed end 1943 but deliveries started no earlier than end 1944. The war in 1945 really came near Japan and the mid 1945 a flotilla departed to attack US forces but that not really happened. But the war soon ended August 1945.
Aichi M6A Seiran
The only surviving Seiran is an aircraft that was surrendered. It has been restored and preserved at the Udvar Hazy Center at Dulles Airport of the Smithsonian in Washington (D.C).
Photographed 2015 by Cees Hendriks (c) Copyright IPMS Nederland
A few scale models of the Seiran. To list a few: in 1/48 scale from Tamiya. In 1/72 from Aoshima, MPM and Tamiya.