Here is the second generation of the Booster Rockets. These are 50m tall, and pack 60% more thrust than their little brothers. You put 2 of these monsters together, and even the massive RSS fully loaded will go up like a bullet out of a gun. Use these as the main engines for a deep space vessel, and you will reach blood vessel bursting speeds. Make sure you design some high "G" chairs for your ships. With these monsters, your going to need them.