3-inch/23-caliber gun
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The 3-inch/23-caliber gun was the standard anti-aircraft gun for United States destroyers through World War I and the 1920s. United States naval gun terminology indicates the gun fired a projectile 3
A 3"/23-caliber gun being fired aboard the United States Navy submarine chaser USS SC-291 sometime between 1918 and 1920.
Plan and left elevation diagrams
3-inch gun M1918
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The 3-inch gun M1918 was a United States 3-inch anti-aircraft gun that entered service in 1918 and served until it was largely superseded by the 3-inch anti-aircraft gun M3 in 1930, though the M1918 r
3-inch M1918 on towed trailer mount
3-inch M1917
Gun crew man their 3-inch M3 at New Fighter Strip, Dobodura, New Guinea
M10 tank destroyer, sporting the 3-inch M7