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Aichi M6A1 Seiran
Technical Information

Seiran (Clear Sky Storm) is the only submarine-borne aircraft built anywhere in the world with offensive missions as its primary role. Its wings and tail folding system for tight storage. Wings swiveled to lie flat against fuselage. It could be readied for flight in seven minutes by four maintenance people. Florescent paint was applied to all moving parts for night operations.

The war ended before it could fly its first mission. Flying from large I-400 Class Subs, of 4,500 tons from a watertight hanger capable of accommodating two attack aircraft, and a catapult on the forward deck, five were ordered, with an enlarged hanger for three planes. Plans were formulated to bomb the Panama Canal's lock gates and Navy Anchorage at Ulithi.

About 30 Seirans were built, only one example, M6A1 1600228 exisits today in the National Air & Space Museum collection, at the NASM Udvar-Hazy Center.

Technical Details
Crew  Two (pilot / observer)
Engines  1x Aichi Atsuta 32 twelve-cylinder inverted-vee liquid-cooled engine
Span   12.2m
Length  11.64m
Height   4.58m
Maximum Speed   295 mph
Range  1,284 miles
Armament   (rear) 1x13mm
Bombload  2 x 250 kg or 1 x 800 kg bomb

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