The Night Boat - Robert R. McCammon

From the living hell of her watery grave she rises again...
THE NIGHT BOAT

Deep under the calm water of a Caribbean lagoon, salvage diver David Moore discovers a sunken Nazi U-boat entombed in the sand. A mysterious relic from the last war. Slowly, the U-boat rises from the depths laden with a long-dead crew, cancerous with rot, mummified for eternity.

Or so Moore thought.

UNTIL HE HEARD THE DEEP HOLLOW BOOM OF SOMETHING HAMMERING WITH FEVERISH INTENSITY...SOMETHING DESPERATELY TRYING TO GET OUT!

Beneath the waves she will seduce the living and devour the dead...
THE NIGHT BOAT