Aichi M6A1 Seiran Technical Specifications
Service Year: 1945
Type: Submarine-Based Attack Floatplane
National Origin: Imperial Japan
Manufacturer(s): Aichi Kokuki KK - Imperial Japan
Production Total: 28
Structural (Crew Space, Dimensions and Weights)
Operating Crew (Typical): 2
Overall Length: 34.88 feet (10.63 meters)
Overall Width: 40.22 feet (12.26 meters)
Overall Height: 15.03 feet (4.58 meters)
Weight (Empty): 7,412 lb (3,362 kg)
Weight (MTOW): 9,370 lb (4,250 kg)
Installed Power and Standard Day Performance
Propulsion: 1 x Aichi Atsuta Type 31 liquid-cooled V12 inline piston engine developing 1,400 horsepower.
Maximum Speed: 295 mph (474 kph; 256 knots)
Maximum Range: 1,243 miles (2,000 km)
Service Ceiling: 32,480 feet (9,900 meters; 6.15 miles)
Rate-of-Climb: 1,640 feet-per-minute (500 m/min)
Armament / Mission Payload
1 x 13mm Type 2 heavy machine gun
2 x 551lb bombs OR 1 x 1,874lb bomb OR 1 x Torpedo
Global Operators / Customers
Model Variants (Including Prototypes)
M6A1 Prototype - Prototype
M6A1 "Seiran" - Production Model Designation; 18 production aircraft.
M6A1-K "Seiran Kai" - Trainer derivative of the base Seiran; never reached production status.
M6A2 - Prototype Model; fitted with Mitsubishi Kinsei MK8P 62 at 1,560 horsepower; single production model.