The BL 18-inch Mk I naval gun was a breech-loading naval rifle used by the Royal Navy during World War I. It was the largest and heaviest gun ever used by the British. [1] Only the Second …

The 18"/48 caliber Mark 1 – United States Naval Gun was the initial name and design for a large caliber naval gun in the early 1920s. After the Washington Naval Treaty prohibited the …

The Japanese 46 cm/45 Type 94 naval gun was a 46 cm (18.1 in) naval gun with the largest bore diameter of any gun ever mounted on a warship. Only two ships carried them, the Imperial …

One of two 18" (45.7 cm) Type C Target Projectiles on display at Building One, NSWC Crane, Indiana. Plate reads "18 inch Experimental Projectile." This is one of the test Projectiles made …

When you see photographs of modern fighter jets carrying 2,000-lb., low-drag bombs, think of the Navy’s only 18-inch gun—the largest and most powerful American gun ever built! The …

The 18"/48 caliber Mark 1 – United States Naval Gun was the initial name and design for large caliber naval gun in the early 1920s. After the Washington Naval Treaty prohibited the …

In the early 1920s, the USN was in the process of developing the 18"/48 (45.7 cm) Mark 1 naval gun. The prototype for this weapon was about halfway completed when the Washington Naval …

A total of three 18" (45.7 cm) guns were built by the Armstrong Works at Elswick, the only manufacturer capable of making such large weapons. These guns were designated as "15 …

Apr 29, 2016 · Its sole purpose was to act as the platform upon which heavy calibre guns of between 12-in. and 16.25-in. (110 tons or 111,765 kg) were placed in order to conduct proof …

The general requirement was for a gun capable of defeating a ship protected by a 15-inch belt and a 7-inch deck. The design for the 18-inch gun was regarded most favourably as the one …