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Sea Dragon
🇺🇸Truax Sea Dragon
1:110 Scale
H:136.4 cmD:21.1 cm
~142 bricks tall~26 studs wide
Concept Date1962-06-01
2 Stages
Height / Length
150 m
Diameter
23.2 m
Launch Mass
18,143,000 kg
Takeoff Thrust
360,000 kN
LEO Capacity
550,000 kg
Mission Profile
The Sea Dragon (Truax Sea Dragon) was a proposed two-stage American super-heavy launch vehicle concept, the largest rocket ever seriously studied, designed for ocean launch and recovery to dramatically reduce launch costs through sheer scale. Standing 150 m tall with a 23.2 m diameter and a projected liftoff mass of 18,143 tonnes, it would have generated 360,000 kN of thrust and delivered 550,000 kg to low Earth orbit. Conceived around 1962 by Robert Truax at Aerojet, the Sea Dragon was a visionary design that proposed building a rocket so large it could be manufactured in shipyards and towed to sea for launch, but it was never funded beyond initial study contracts.
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