Fatal Depth

THE MISSION: Sink an unsinkable warsub.
It seems futile.
It's a vessel created to start --- and end --- wars: a dreadnought.
At over four hundred meters long with a crew of six hundred, it's the largest submarine in the world.
Sixty—eight torpedo tubes. Twenty nuclear ballistic missiles with one hundred and sixty warheads. Mines. Grapples. A revolutionary propulsion system.
And a brand new weapon: The Tsunami Plow.
The warsub has just devastated the United States Submarine Fleet HQ on both the At...