High Quality Content by WIKIPEDIA articles! Silent Hunter 4: Wolves of the Pacific is a computer submarine simulation for Windows developed by Ubisoft Romania and published by Ubisoft in 2007. It places the player in command of an American submarine during World War II and takes place in the Pacific theater. The game allows players a variety of play modes including career, single war patrol and single battle engagements. The simulation uses detailed and accurate 3D graphics to immerse the player in the environment of a World War II submarine.