UST Apollo

Sea launched super heavy, nuclear upper vehicle, designed for the most heavy payloads in the need for a launch.

Actually it acts as a direct launch transfer stage capable of delievering 80 brute metric tons to almost anywhere into the inner and far deep space of the juno system (actually its just cylero).

Its sea launched because at ultra physycs it collapses under its own weight causing a massive explosion on ground.

It can stay vertical thanks to the buoyancy tank attached to the bottom, and has enough power to counter the water pressure and liftoff by itself.

Its a direct succesor of the retired MOUHL rocket, since it run obsolete by design and benefits.