Torpedo Room
The torpedo room contains the firepower of the submarine. As many as 22 weapons can be stored on racks. Both torpedoes (used for sea-to-sea combat) and Tomahawk cruise missiles (used for sea-to-land combat) are housed here. To load a weapon into torpedo tubes, it must first be moved onto a loading tray and carefully inspected. Once checked and readied, a loading ram moves the weapon into the tube and the breech door is closed, sealing the tube.
Diagram reprinted from Tom Clancy's Submarine: A Guided Tour Inside a Nuclear Warship, Laura Deninno, Series Illustrator.