Kawanishi H11K-1 'Soku' Japan ultimate flying boat in WWII (incl bonus Ohka Trainer,15 and ??)

In early 1944, due to the fuel and raw materials shortage in Japan at that stage in the war, the IJN desired to have a large transport seaplane capable of carry a significant cargo load which would fly from Japan to Sumatra and then return. The success of the H6K and H8K flying boats in the transport role led Kawanishi and the IJN to develop a new flying boat to do the job. Taking the H8K as a base, Kawanishi began the design of the H11K Soku rapidly. As ordered by the IJN, both the hull and wings were to be built of wood and under each wing would be the non-retractable floats. Authorisation was given to construct a full scale wooden mock-up for inspection before Kawanishi could proceed with the actual prototype. The deterioration of war affected the construction of the mock-up. Kawanishi was also instructed by the IJN to concentrate on building the N1K2 Shiden-kai fighyter. These factors delayed the mock-up completion. In April 1945. bombing raid destroyed the nearly completed Soku mock-up. With this loss, all further work on the Soku was ended.