Initially designed for use with the Connecticut -class of pre-dreadnought battleships, the Mark 5 continued in service aboard the first generation of American dreadnoughts. The 12-inch (305 …

The mortar could fire two types of shell, a heavy armour-piercing shell with a delayed action fuse weighing 384 kg, and a lighter 287 kg shell fitted with an impact fuze. The light shell was …

The 12-inch coastal defense gun M1895 (305 mm) and its variants the M1888 and M1900 were large coastal artillery pieces installed to defend major American seaports between 1895 and …

Unexploded 30.5 cm (12") APC shell that struck HMS Defender during the Jutland (Skagerrak) Battle. This was fired from the German 3rd Squadron and ricocheted off the water before …

The barrel is 3.05 meters long (called "L/10" in Army terminology) and has a caliber of 30.5 centimeters to fire a massive 305mm shell at range. The barrel allows an elevation range of …

The Imperial Japanese Army (IJA) 305mm (30 cm) Howitzer Type 7 (1918) was a low-velocity howitzer firing a large shell at a high-angle shell.

Very high muzzle velocity was to have given this gun an exceptionally long range, but probably at the cost of a very short liner life. Design of this weapon started in 1938 at the Metal Factory, …

The Obukhovskii 12"/52 Pattern 1907 gun was a 12-inch (305 mm), 52- caliber naval gun. It was the most powerful gun to be mounted aboard battleships of the Imperial Russian Navy and …

Designed to fire the new "super-heavy" AP projectiles, their side belt armor penetration at 20,000 to 30,000 yards (18,290 to 27,430 m) was almost identical to and the deck plate penetration …

The 12-inch (305 mm)/45 caliber Mark 5 naval gun was designed as an incremental improvement upon the preceding American naval gun, the 12"/40 caliber gun Mark 4. [1] . As such, it was a …