: Control speed using the engine telegraph and steer by clicking the rudder indicator .

: Click specific points on the depth gauge to descend or surface. Use the periscope depth button to bring the sub just below the surface for observation.

: Select a target via the periscope or Target Bearing Transmitter (TBT). Launching is "arcade-style"—aim at the target and fire when the green chevron or range indicator appears.

Most functions are handled via the , which monitors fuel, oxygen, battery life, and current depth.