"Your Highness, it blew a hole right through the sea serpent killing it instantly. It sounds like a powerful weapon, but we were lucky. The tank had started to deform, another few minutes it would have blown and taken us, and probably the ship to the bottom of the ocean."

"What if you wanted to move something slowly?"

"You'd be better off running a steam engine and setting the gears to whatever speed you want. Steam is highly compressible, water is not, which is why it's ...