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The 8-inch and 10-inch siege mortars had maximum ranges of 2,225 and 2,064 yards, respectively, (Abbot 1867, pp. 39–40) and the 13-inch seacoast mortar had a maximum range of 4,300 yards, but their effective ranges were much shorter. For the 8-inch siege mortar at a range of 800 yards, about 50% of the shells would fall within a 50-yard ...
Albrecht Mortar German Empire: World War I 254: 10-inch siege mortar M. 1841 United States: 1841 254: 10-inch seacoast mortar M. 1841 United States: 1841 260: 26 cm Minenwerfer M 17 Austria-Hungary: World War I 320: 320 mm Type 98 mortar Japan: World War II: 325: Mortier de 12 Gribeauval Kingdom of France: 1781 330: 13-inch seacoast mortar M ...
US Army 13-inch mortar "Dictator" was a rail-mounted gun of the American Civil War. The mortar had fallen out of general use in Europe by the Napoleonic era , although Manby Mortars were widely used on the coast to launch lines to ships in distress, and interest in their use as a weapon was not revived until the beginning of the 20th century.
Fort St. Philip was described as 'an irregular work, the body a parallelogram. Approaches to it are nearly impracticable.' [12] (Today, the fort is only accessible via boat or helicopter. [13]) The fort mounted twenty-nine 24-pound cannons, a 6-pound cannon, two howitzers (of 5.5-inch and 8 inch calibres) and a 13-inch mortar. Additionally, two ...
English: Title: 13 inch mortar "Dictator" in front of Petersburg, Va Abstract: Photograph shows Union officers and enlisted men standing around a large mortar on a platform on a flatbed railroad car near Petersburg, Virginia. Physical description: 1 photographic print on card mount : albumen ; 6 3/4 x 9 1/4 in. (image), 11 x 14 in. (mount)
USS John Griffith was a mortar schooner acquired by the Union Navy during the American Civil War.She was used for various purposes, but especially for bombardment because of her large 13-inch mortar and 12-pounder howitzers that could fire up and over tall defensive riverbanks.
During the American Civil War, the Union fleet included armored gunboats armed with 13 inch mortars; the weapon weighed 17,250 lbs and its bedding another 4,500 lbs. They fired 204-lb shells, with a bursting charge of 7 lbs of gunpowder, and had a range of three miles. At this distance, the projectile spent 30 seconds in flight.
Both vessels were broadly similar to ketches but with two 12 1 ⁄ 2 inch mortars installed in fixed positions before the main mast. Firedrake was by far the larger of the two, measuring 279 tonnes burthen with a gundeck length of 84 ft 9 in (25.83 m) and a keel of 68 ft 0 in (20.73 m). Her initial complement was 50 men. [8]