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68-pounder Lancaster Gun
68-pounder Lancaster guns were a British rifled muzzle-loading cannon of the 1850s that fired a 68-pound shell. They were fitted in pairs to the ''Arrow''-class gunvessel. The cannon was designed with an oval bore and had a range of about 6500 yards. The gun had a tendency to burst. References External links Naval guns of the United Kingdom Victorian-era weapons of the United Kingdom {{artillery-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
68 Pounder Lancaster Gun 1854
68 may refer to: * 68 (number) * one of the years 68 BC, AD 68, 1968, 2068 * 68 Publishers, a Czech-Canadian publishing firm * '68 (band), an American rock band * '68 (comic book) a comic book series from Image Comics Image Comics is an American comic book publisher and is the third largest comic book and graphic novel publisher in the industry in both unit and market share. It was founded in 1992 by several high-profile illustrators as a venue for creator-ow ... See also * List of highways numbered 68 {{Numberdis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rifled Muzzle Loader
A rifled muzzle loader in the forecastle of HMS Gannet (1878) ">HMS_Gannet_(1878).html" ;"title="forecastle of HMS Gannet (1878)">forecastle of HMS Gannet (1878) A rifled muzzle loader (RML) is a type of large artillery piece invented in the mid-19th century. In contrast to Smoothbore, smooth bore cannon which preceded it, the rifling of the gun barrel allowed much greater accuracy and penetration as the spin induced to the shell gave it directional stability. Typical guns weighed 18 tonnes with 10-inch-diameter bores, and were installed in forts and ships. This new gun and the rifled breech loader (RBL) generated a huge arms race in the late 19th century, with rapid advances in fortifications and ironclad warships. Royal Navy experience The largest rifled muzzle-loader carried on a warship was the 17.7-inch, 100-ton Elswick of the 1870s, four of which were installed in each of the Italian battleships '' Duilio'' and ''Enrico Dandolo'' (launched in 1872). The Royal Navy at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arrow Class Gunvessel
The ''Arrow'' class comprised six second-class screw-driven vessels built as despatch vessels for the Royal Navy in 1854, mounting 6 guns. In 1856 they were redesignated as second-class gunvessels. Construction Design The Crimean War sparked a sudden need for shallow-draught, manoeuvrable vessels for inshore work in the Baltic and the Black Sea. The ''Arrow'' class of six wooden-hulled screw steamers were built during 1854 to a design by the Surveyor’s Department. Construction was undertaken at two commercial yards on the Thames, R & H Green at Blackwall Yard and C J Mare & Company, at Leamouth. Two further designs of Crimean War gunvessel were ordered during 1855, the ''Intrepid'' class and the ''Vigilant'' class, and in 1856 the six ''Arrow''-class despatch vessels were re-classed as second-class gunvessels. Propulsion A two-cylinder horizontal single expansion steam engine provided through a single screw. Sail plan All ''Arrow''-class gunvessels were barque-rigged. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oval Bore
In firearms, rifling is machining helical grooves into the internal (bore) surface of a gun's barrel for the purpose of exerting torque and thus imparting a spin to a projectile around its longitudinal axis during shooting to stabilize the projectile longitudinally by conservation of angular momentum, improving its aerodynamic stability and accuracy over smoothbore designs. Rifling is characterized by its twist rate, which indicates the distance the rifling takes to complete one full revolution, such as "1 turn in 10 inches" (1:10 inches), "1 turn in 254 mm" ("1:254 mm" or "1:25.4 cm)", or the like. Normally, an experienced shooter can infer the units of measurement from the numbers alone. A shorter distance indicates a faster twist, meaning that for a given velocity the projectile will rotate at a higher spin rate. The combination of length, weight, and shape of a projectile determines the twist rate needed to gyroscopically stabilize it – barr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Guns Of The United Kingdom
A navy, naval force, or maritime force is the branch of a nation's armed forces principally designated for naval warfare, naval and amphibious warfare; namely, lake-borne, riverine, littoral zone, littoral, or ocean-borne combat operations and related functions. It includes anything conducted by surface Naval ship, ships, amphibious warfare, amphibious ships, submarines, and seaborne naval aviation, aviation, as well as ancillary support, communications, training, and other fields. The strategic offensive role of a navy is Power projection, projection of force into areas beyond a country's shores (for example, to protect Sea lane, sea-lanes, deter or confront piracy, ferry troops, or attack other navies, ports, or shore installations). The strategic defensive purpose of a navy is to frustrate seaborne projection-of-force by enemies. The strategic task of the navy also may incorporate nuclear deterrence by use of submarine-launched ballistic missiles. Naval operations can be broa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
