Silent Hunter 4: Wolves of the Pacific — U-Boat Missions — The simulator uses detailed and accurate 3D graphics to immerse the player in the environment of a World War II submarine. The ship's systems are largely functional, and the player is exposed to many aspects of submarine warfare of the time. The game allows the player to choose how realistic and challenging the gameplay is, and is designed to allow new players to easily learn the core gameplay while allowing experienced users to manually control systems such as crew management, torpedo distribution, radar, sonar and Trigonometry target indicator.