The 18-caliber

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The 18-caliber Empty The 18-caliber

Post by kosovohp on Fri Oct 15, 2010 4:06 am

Richelieu's intermediate armament of four 240-millimeter (9.4 in) guns was mounted in barbettes on the upper deck, one gun at each corner of the battery, with her six 274-millimeter (10.8 in) guns on the battery deck below the barbettes. One 240-millimeter gun was mounted in the forecastle as a chase gun. The ship's secondary armament consisted of ten 120-millimeter (4.7 in) guns. These were later replaced by six 138-millimeter (5.4 in) guns.[3]
The 18-caliber 274-millimeter Modéle 1870 gun fired an armor-piercing, 476.2-pound (216.0 kg) shell while the gun itself weighed 22.84 long tons (23.21 t). The gun fired its shell at a muzzle velocity of 1,424 ft/s (434 m/s) and was credited with the ability to penetrate a nominal 14.3 inches (360 mm) of wrought iron armour at the muzzle. The armor-piercing shell of the 19-caliber 240-millmeter Modele 1870 gun weighed 317.5 pounds (144.0 kg) while the gun itself weighed 15.41 long tons (15.66 t). It had a muzzle velocity of 1,624 ft/s (495 m/s) and was credited with the ability to penetrate a nominal 14.4 inches (366 mm) of wrought iron armor at the muzzle. The 138-millimeter gun was 21 calibers long and weighed 2.63 long tons (2.67 t). It fired a 61.7-pound (28.0 kg) explosive shell that had a muzzle velocity of 1,529 ft/s (466 m/s). The guns could fire both solid shot and explosive shells.[4]





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