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Kankoh-maru spacecraft.jpg
Artist's concept of Kankoh-maru
Function Manned re-usable rocket
Country of origin Japan
Height 23.5 m (77 ft)[1]
Diameter 18 m (59 ft)[1]
Mass 550 t (1,210,000 lb)[1]
Stages 1
Payload to LEO 4 t (8,800 lb)[2]
Launch history
Status Proposed[2]
First stage
Thrust 725,000 N (163,000 lbf) [1]

The Kankoh-maru (観光丸, Kankōmaru) is the name of a proposed vertical takeoff and landing (VTVL), single-stage-to-orbit (SSTO), reusable launch system (rocket-powered spacecraft).[1]


The concept was created by the Japanese Rocket Society[ja] in 1993.[2][need quotation to verify] This development cost was estimated ¥2.67 trillion ($28 billion) in 1995.[2][need quotation to verify]

The name Kankō Maru is derived from the first steam-powered vessel in Edo-era Japan.[2]

See also[edit]


  1. ^ a b c d e Anderson, Erik (July 1997). "Kankoh-maru Flight Manual". Space Future. Retrieved 2012-08-04. 
  2. ^ a b c d e 準軌道宇宙旅行 宇宙丸 - 観光丸 [Suborbital space tourism Uchumaru - Kankoh-maru] (in Japanese). uchumaru.com. 2005-04-11. Retrieved 2011-07-24. 

External links[edit]