Keywords: US Navy Mk 13 and Mk 14 torpedoes in the 1940s.jpg U S Navy submarine and aircraft torpedos developed by the Newport Torpedo Station Rhode Island USA before and during World War II The upper photograph shows the Mark XIV Model 3 type Submarine Steam Torpedo and the externally identical Mark XXIII type These torpedos were 20' 6 long 6 28 m with a diameter of 21' 53 3 cm The lower photograph shows the Mark XIII type Aircraft Torpedo which was also used on Motor Torpedo PT Boats This type of torpedo was 13' 5 long 4 14 m with a diameter of 22' 4 56 9 A shroud ring was later added around the tail fins of the Mark XIII torpedo Official U S Navy photo http //www history navy mil/our-collections/photography/numerical-list-of-images/nhhc-series/nh-series/NH-84000/NH-84499 html NH 84499 from the U S Navy http //www history navy mil Naval History and Heritage Command s 1940 USN PD-USGov-Military-Navy Mark 13 torpedo Mark XIV torpedo |