Silent Hunter: Wolves of the Pacific Gold Edition is a compilation of Silent Hunter 4: Wolves of the Pacific and Silent Hunter 4: Wolves of the Pacific U-Boat Missions.
From the box back:
HUNT, HIDE, AND KILL across the icy waters of the Oacific with over 75 authentically recreated war machines.
COMMAND U.S. SUB CLASSES: Tambor, P-Class, S-Class, Salmon, Gato, and Balao.
COMPLETE A BRAND-NEW CAMPAIGN deep in the heart of the Indian Ocean and coordinate attacks.
PROWL THE WATERS as the captain of a German submarine in a never-before-seen theater of operations.