Aichi M6A Seiran
The Aichi M6A Seiran (晴嵐, Clear Sky Storm) is a submarine-launched attack floatplane designed for the Imperial Japanese Navy during World War II. It was intended to operate from I-400 class submarines, whose original mission was to conduct aerial attacks against the United States. == Design and development == From the late 1920s, the Imperial Japanese Navy had developed a doctrine of operating floatplanes from submarines to search for targets.