The Electric room contains the two motor generators. They are on the propeller shaft so when the engines are running, they are turning and generating power to charge the batteries and provide electricity for the U-Boat. The propellers would also be turning. When the U-Boat submerges, the engines are disengaged via a clutch. The motor generator then becomes a motor to turn the propellers using the stored battery charge. The electric room also contains the electrical switching and controls to route the electricity for charging batteries or for powering the motors. The hatch at the rear leads to the rear torpedo room, containing two rear facing torpedo tubes.