|Place of origin||United States|
|Used by||United States Navy|
|Mass||23,800 pounds (10,800 kg) (with boosters)|
13,000 pounds (5,900 kg) (w/o boosters)
|Length||46 feet 1 inch (14.05 m)|
|Diameter||3.75 feet (1.14 m)|
|Warhead||3,000 pounds (1,400 kg) such as the W5 warhead|
|Engine||2 × Marquardt 28 ramjet 6,000 lbf (27 kN)|
4 × booster rockets 8,000 lbf (36 kN)
|Wingspan||13 feet 4 inches (4.06 m)|
|500 nautical miles (926 km)|
|Maximum speed||Mach 2|
In 1946 the US Navy sanctioned development of the Rigel missile as a sub-launched supersonic weapon to attack enemy shores, in parallel with development of the subsonic SSM-N-8 Regulus. The SSM-N-6 was to be launched by means of 4 rocket boosters and a catapult, with two ramjets for the cruise mode of the flight.
Several Rigel test articles were built to test the planned ramjet system for the Rigel missile. They had a single ramjet and a single rocket booster. Subsequently, scaled-down Flight Test Vehicles (FTVs) were built with a configuration similar to the full-scale missile, and the first FTV launch occurred in May 1950. Unfortunately, plans to build the SSM-N-6 missiles were cancelled because the failure of FTV flight tests, but also due to the fact that Rigel posed a problem for submariners by requiring a longer launch rail on submarines than the SSM-N-8 Regulus.
- United States Navy (planned)