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By comparison, the 12"/50-caliber Mark 8 gun of the Alaska-class large cruisers had a barrel life of 344 shots, while the 16"/50-caliber Mark 7 gun fitted in the Iowa-class battleships had a barrel life of 290 rounds. [2] Turning at 4 degrees a second, each turret could train to 150 degrees on either side of the ship.
The Gun Assembly shown in the picture is the mount's right gun. The left gun is the mirror image of the right gun. Since this gun assembly fired semi-fixed ammunition, (pictured) each round was delivered to the guns in two pieces. [27] Each gun, in this twin mount, had its own projectile hoist and powder case hoist from the upper handling room.
Three of these formed the main battery of the Iowa-class battleships. A main battery is the primary weapon or group of weapons around which a warship is designed. As such, a main battery was historically a naval gun or group of guns used in volleys, as in the broadsides of cannon on a ship of the line.
Napoléon (1850), the world's first steam-powered battleship. A ship of the line was a large, unarmored wooden sailing ship which mounted a battery of up to 120 smoothbore guns and carronades, which came to prominence with the adoption of line of battle tactics in the early 17th century and the end of the sailing battleship's heyday in the 1830s.
Battleships, cruisers and destroyers would pound shore installations, sometimes for days, in the hope of reducing fortifications and attriting defending forces. Obsolete battleships unfit for combat against other ships were often used as floating gun platforms expressly for this purpose.
A battleship gun barrel used by the Navy in World War II that seemed destined for the scrapyard will soon get a second life. Coast Defense Study Group, a nonprofit organization dedicated to ...
In turn the modern Dreadnought battleship appeared and alongside it the battlecruiser; the former protected by large amounts of armour which could protect it against all but guns of the largest calibre as found on other battleships, the latter carrying same size guns as a battleship but less armour in order to reach higher speeds.
The effective length of the barrel (from breech to muzzle) is divided by the barrel diameter to give a dimensionless quantity. [2]: 81 For example, the main guns of the Iowa-class battleships can be referred to as 16"/50 caliber. They are 16 inches in diameter and the barrel is 800 inches long (16 × 50 = 800).