WebThe Mark 8 shells gave the North Carolina, South Dakota, and Iowa classes the second heaviest broadside of all battleship classes, despite the fact that the North Carolina and South Dakota ships were treaty battleships. Only the Yamato … Web10 aug. 2016 · The AP Mark 8 has a radius of ogive of 144 inches (366 cm) or 9crh and leaves the barrel rotating at about 4,000 RPM. This round creates overpressures …
USN super heavy shells were there any disadvantages
Web20 jun. 2024 · The AP Mark 8 has a radius of ogive of 144 inches (366 cm) or 9crh and leaves the barrel rotating at about 70 RPS. This round creates overpressures exceeding … The 18"/48 cal Mark 1 was finished with an extra thick 16-inch liner, and the resulting weapon became the 16"/56 cal Mark 4. The gun was first tested at the Dahlgren proving grounds in 1927, with tests continuing into the 1930s. It fired a 2,100 lb (953 kg) AP shell at 3,000 ft/s (914 m/s) muzzle velocity, with a range of 49,383 yd (45,156 m) at 40° elevation. The high muzzle velocity of the prototype resulted in very short liner life of only 45 rounds, with a predicted liner life of 12… farmers markets in bay county florida
14-inch/45-caliber gun - Wikipedia
WebThe Mark 8 weighed 121,856 pounds (55,273 kg) including the breech and was capable of an average rate of fire of 2.4–3 rounds a minute. It could throw a 1,140 lb. (517.093 kg) … WebThe Tuscaloosa and Wichita classes used the older 260 lbs. (118 kg) AP projectiles and thus had the same range characteristics as those listed for the 8"/55 (20.3 cm) Mark 14. … WebAt a 15-degree angle, the guns could fire a shell out to 23,000 yd (21,000 m). Each individual gun weighed 142,492 lb (64,633 kg) with the breech and measured 53 ft 6.5 in (16.32 m) in length. [3] Each of the original Mark 1 built-up guns consisted of a tube without liner, jacket, eight hoops and a screw box liner. free pdf rotate pages