The W19, also called Katie, was an American nuclear artillery shell, derived from the earlier W9 shell. The W19 was fired from a special howitzer. It was introduced in 1955 and retired in 1963.
Specifications The W19 was in diameter, long, and weighed . It had a yield of 15–20 kilotons and was like its predecessor the W9, a gun-type nuclear weapon.
Variants
W23 The W19 nuclear system was adapted into a nuclear artillery shell for the US Navy's 16-inch (406 mm) main battery found on the Iowa-class battleships, the W23. Production of the W23 began in 1956 and they were in service until 1962, with a total of 50 units being produced.
The W23 was 16 inches (406 mm) in diameter and long, with a weight given variously as in reference sources. As with the W19, yield was 15–20 kilotons.
References
See also Nuclear artillery List of nuclear weapons W9
External links Allbombs.html webpage listing all US nuclear weapons, at nuclearweaponarchive.org