From the back cover: "The Ludendorff-a super battleship, the single most powerful weapon yet devised, a creation of man at his most modern and most primitive.
The Ludendorff-key to Germany's great sea offensive. If the British gain control of the huge ship's armory, her giant guns can be rammed down the throats of the German U-boats based in Danish waters.
The Ludendorff-the target of a small band of well-schooled killers, led by a cool American mastermind. Disguised as U-boat survivors, they would tackle the almost impossible job of capturing the ship and her crew."