The Saturn V is still the Tallest, heaviest and most powerful ever built. It is however dwarfed by another rocket that never left the blueprint stage. Youtube channel Curious Droid shows us the Sea Dragon, a super-heavy-lift rocket designed in the early 1960’s that would have been 10 times more powerful with 80 Million lb’s of thrust compared to the Saturn’s 7.8 million and that was from just one massive engine.