Long, hard and full of seamen, the Los Angeles class submarine Nimitz sliced through the icy water like a big cock powered by twin turbine testicles.
Captain Shteubing was putting his new yeoman through her paces.
"NAV, CONN! Dive! Dive!" he bellowed, pushing her flaxen head down.
"That's right," he murmured, his head listing aft, "Plot a solution... up periscope... flooding tubes 1 & 2..."