WEAPONS AND FIRE CONTROL
Pampanito's main weapons are torpedoes, main deck gun, anti-aircraft guns, and small arms. Pampanito carried both the Mark 14 steam powered torpedoes and the Mark 18 electric torpedoes. On her forward main deck she is fitted with a four-inch / fifty-caliber deck gun. On the elevated gun decks she carries a twenty millimeter gun forward and a forty millimeter gun aft. Below deck the magazine was equipped with a variety of small arms ranging from handguns, twelve gauge shotguns and fifty caliber machine guns.
The fire control system consists of the periscopes, target bearing transmitters mounted on the bridge and after gun deck, Torpedo Data Computer in the conning tower, and gyro indicating setting regulators in each torpedo room.
TORPEDO TUBES AND TORPEDO FIRING PROCEEDURES: The torpedo tube is very similar to a large naval gun. It is a long tube made of bronze with a muzzle, or outer door, and a breech, or inner door. As a gun fires a shell so does the torpedo tube, using compressed air rather than explosives for the purpose. One marked difference, however is that the tubes projectile, the torpedo, is self-propelled. The tube is used only to push the torpedo out of the submarine.