5-inch/38-caliber gun
Videos
The Mark 12 5"/38-caliber gun was a United States dual-purpose naval gun, but also installed in single-purpose mounts on a handful of ships. The 38-calibers long barrel was a mid-length compromise bet
Two Mk 30 single enclosed base ring mounts on USS David W. Taylor
Mk 12 gun assembly
Vertical Sliding Wedge Breech Block.
Drawing of the recoil and counter-recoil systems. The arrow shows the motion of the housing in the slide during recoil.
5-inch/25-caliber gun
Videos
The 5"/25 caliber gun entered service as the standard heavy anti-aircraft gun for United States Washington Naval Treaty cruisers commissioned in the 1920s and 1930s. The goal of the 5"/25 design was t
5-inch/38-caliber gun
…on a handful of ships. The 38-calibers long barrel was a mid-length compromise between the previous United States standard 5-inch/51 low-angle gun and 5-inch/25 anti-aircraft gun. The increased barrel length provided greatly improved performance in both anti-aircraft and anti-surface roles compared to the 5-inch/25 gun. However…
On the deck of Balao-class submarine USS Bowfin
Battleship USS New Mexico's 5"/25 battery prepares to fire during the bombardment of Saipan, 15 June 1944