As a hudge fan of planes, I discovered years before the Schneider's Cup, which was an international competition of Seaplanes in 1930s.
Prestigious plane makers did this competition, with innovative solutions.
One the most beautiful was the SUPERMARINE, created by Reginald MITCHELL, which will be in fact the genesis of the SPITFIRE.
YK-PLANE is just a reminder of all "Those Magnificent Men in their Flying Machines".