Saturn I
…top, now to be known as the S-V stage. The C-2 model added a new S-III stage with two new 150,000 to 200,000 lbf (670 to 890 kN) engines, keeping the S-IV and S-V on top. The C-3 configuration added the S-II stage with four of these same engines, keeping only the S-III and S-IV on top. The C models easily…