The simulation uses detailed and accurate 3D graphics to immerse the player in the environment of a World War II submarine. The systems of the vessel 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 game experience is to be and it is designed to allow new players to easily master the basic game play, while allowing for experienced users to manually control systems such as crew management, torpedo allocation, radar, sonar and target trigonometry.