Saturn IB
Saturn familyNational Aeronautics and Space AdministrationRetired
The Saturn IB (pronounced "one B", also known as the Uprated Saturn I) was an American launch vehicle commissioned by the National Aeronautics and Space Administration (NASA) for the Apollo program. It replaced the S-IV second stage of the Saturn I with the much more powerful S-IVB, able to launch a partially fueled Apollo Command/Service Module (CSM) or a fully fueled Lunar Module (LM) into low Earth orbit for early flight tests before the larger Saturn V needed for lunar flight was ready.

Specifications
- Thrust
- 7,100 kN
- Height
- 43.2 m
- Diameter
- 6.61 m
- Launch mass
- 590 t
- Stages
- 2
- LEO capacity
- 21,000 kg
Specifications from Launch Library. Figures the operator has not published are omitted.
Flight record
10flightswith a definitive outcome
90%success rate9 of 10
6success streakcurrent
Counted from padside's own launch record, the same basis as the stats page.