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RML 12-inch 25-ton Gun
The RML 12-inch 25-ton guns were large rifled muzzle-loading guns of mid-late 1800s used as primary armament on British ironclad turret battleships and coastal monitors, and also ashore for coast defence. They were the shorter and less powerful of the two 12-inch (305-mm) British RML guns, the other being the 35-ton gun. Design Mark I Four guns were first made in 1866 with a toughened mild steel tube surrounded by multiple wrought iron coils on the original Armstrong pattern. Mark II While strong, the multiple coils were considered too expensive for construction in quantity. From 1867 guns were built on the simplified and hence cheaper "Fraser" system involving fewer but larger coils similar to the 10-inch (254-mm) Mk II gun. The guns were not considered a success, with the rifling twist of 1 in 100 increasing to 1 in 50 considered insufficient for accuracy, and guns were retubed in 11-inch (279-mm) calibre when their bores wore out.Treatise on Construction of Servic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Ram
A ram was a weapon fitted to varied types of ships, dating back to antiquity. The weapon comprised an underwater prolongation of the bow of the ship to form an armoured beak, usually between 2 and 4 meters (6–12 ft) in length. This would be driven into the hull of an enemy ship to puncture, sink or disable it. Ancient rams It was possibly developed in late Bronze age Egypt, but it only became widely used in later Iron age Mediterranean galleys. The ram was a naval weapon in the Greek/Roman antiquity and was used in such naval battles as Salamis and Actium. Naval warfare in the Mediterranean rarely used sails, and the use of rams specifically required oarsmen rather than sails in order to maneuver with accuracy and speed, and particularly to reverse the movement of a ramming ship to disentangle it from its sinking victim, lest it be pulled down when its victim sank. The Athenians were especially known for their ''diekplous'' and '' periplous'' tactics that disabled enemy ships ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Hotspur (1870) 12-inch Gun Rear View
Four ships of the British Royal Navy have been named HMS ''Hotspur'' after the nickname of Sir Henry Percy: * , a 36-gun fifth rate in service from 1810 to 1821 * , a 46-gun fifth rate launched in 1828, a chapel hulk after 1859, renamed ''Monmouth'' in 1868, and sold in 1902 * , an armoured ram launched in 1870 and sold in 1904 * , an launched in 1936 and transferred to the Dominican Republic in 1948 Fictional ships * A sloop called ''Hotspur'', armed with twenty 9-pounder cannon and four carronades, appears in the Horatio Hornblower novel, ''Hornblower and the Hotspur'', third in the series * A ''Hotspur'' appears in Sir Arthur Conan Doyle's short story ''The Adventure of the Gloria Scott'' * A schooner called ''Hotspur'' appears in the Richard Bolitho novel ''A Band of Brothers'', written by Douglas Reeman (using the pseudonym Alexander Kent). * A destroyer called ''Hotspur'' appears in the Honor Harrington novel ''The Short Victorious War'' written by David Weber David ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
305 mm Artillery
3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious or cultural significance in many societies. Evolution of the Arabic digit The use of three lines to denote the number 3 occurred in many writing systems, including some (like Roman and Chinese numerals) that are still in use. That was also the original representation of 3 in the Brahmic (Indian) numerical notation, its earliest forms aligned vertically. However, during the Gupta Empire the sign was modified by the addition of a curve on each line. The Nāgarī script rotated the lines clockwise, so they appeared horizontally, and ended each line with a short downward stroke on the right. In cursive script, the three strokes were eventually connected to form a glyph resembling a with an additional stroke at the bottom: ३. The Indian digits spread to the Caliphate in the 9th ... [...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] |
Thomas Brassey, 1st Earl Brassey
Thomas Brassey, 1st Earl Brassey (11 February 1836 – 23 February 1918), was a British Liberal Party politician, Governor of Victoria and founder of ''The Naval Annual''. Background and education Brassey was the eldest son of the railway magnate Thomas Brassey (1805-1870), by his wife Maria Harrison, a daughter of Joseph Harrison, a forwarding and shipping agent. He was the elder brother of Henry Brassey and Albert Brassey. He was educated at Rugby and University College, Oxford, and was called to the Bar, Lincoln's Inn, in 1864. Political career Brassey was briefly Member of Parliament (MP) for Devonport in 1865, winning the seat at a by-election in June and then losing it again the general election in July. He returned to Parliament three years later as the representative for Hastings at the 1868 general election, holding that seat until he was defeated at the 1886 general election. He was President of the first day of the 1874 Co-operative Congress. He served under W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Naval Guns ...
List of Naval Guns by country of origin in decreasing caliber size List of naval guns by caliber size, all countries Naval anti-aircraft guns See also *List of artillery *List of the largest cannon by caliber *Glossary of British ordnance terms References {{reflist External links NAVWEAPS – Naval weapons of the world, 1880 to today(retrieved 2010-02-01) Naval 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gas-checks In British RML Heavy Guns
Gas-checks were attachments to ammunition that revolutionised the performance of RML heavy guns. The first generation of RML heavy guns began entering service in about 1865. They all had Woolwich rifling and relied on studs on the projectiles for rotation. Gas-checks were first introduced in 1878 or soon after. They significantly reduced wear on the guns while also increasing their range and accuracy. Before long, studless ammunition was being manufactured for these guns, using gas-checks for projectile rotation. Gas-checks also facilitated a switch to the second generation of RML guns which used polygroove rifling and only supported studless ammunition. Introduction The first RML heavy guns were introduced into British service in about 1865. By 1878, 11 models of Woolwich rifled guns had been introduced, ranging from 7 inches to 12.5 inches. Unfortunately, Woolwich rifling had a major defect, namely, that hot powder gas escaping around the ammunition ("Windage Windage is a term ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RML 10-inch 18-ton Gun
The RML 10-inch guns Mk I – Mk II were large rifled muzzle-loading guns designed for British battleships and monitors in the 1860s to 1880s. They were also fitted to the and flat-iron gunboats. They were also used for fixed coastal defences around the United Kingdom and around the British Empire until the early years of the 20th century. Design The 10-inch gun was a standard "Woolwich" design (characterised by having a steel A tube with relatively few broad, rounded and shallow rifling grooves) developed in 1868, based on the successful Mk III 9-inch gun, itself based on the "Fraser" system. The Fraser system was an economy measure applied to the successful Armstrong design for heavy muzzle-loaders, which were expensive to produce. It retained the Armstrong steel barrel surrounded by wrought-iron coils under tension, but replaced the multiple thin wrought-iron coils shrunk around it by a single larger coil (10 inch Mark I) or 2 coils (Mark II); the trunnion ring was n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wrought Iron
Wrought iron is an iron alloy with a very low carbon content (less than 0.08%) in contrast to that of cast iron (2.1% to 4%). It is a semi-fused mass of iron with fibrous slag Inclusion (mineral), inclusions (up to 2% by weight), which give it a wood-like "grain" that is visible when it is etched, rusted, or bent to structural failure, failure. Wrought iron is tough, malleable, ductile, corrosion resistant, and easily forge welding, forge welded, but is more difficult to welding, weld electrically. Before the development of effective methods of steelmaking and the availability of large quantities of steel, wrought iron was the most common form of malleable iron. It was given the name ''wrought'' because it was hammered, rolled, or otherwise worked while hot enough to expel molten slag. The modern functional equivalent of wrought iron is Carbon steel#Mild or low-carbon steel, mild steel, also called low-carbon steel. Neither wrought iron nor mild steel contain enough carbon to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mild Steel
Carbon steel is a steel with carbon content from about 0.05 up to 2.1 percent by weight. The definition of carbon steel from the American Iron and Steel Institute (AISI) states: * no minimum content is specified or required for chromium, cobalt, molybdenum, nickel, niobium, titanium, tungsten, vanadium, zirconium, or any other element to be added to obtain a desired alloying effect; * the specified minimum for copper does not exceed 0.40%; * or the maximum content specified for any of the following elements does not exceed the percentages noted: manganese 1.65%; silicon 0.60%; copper 0.60%. The term ''carbon steel'' may also be used in reference to steel which is not stainless steel; in this use carbon steel may include alloy steels. High carbon steel has many different uses such as milling machines, cutting tools (such as chisels) and high strength wires. These applications require a much finer microstructure, which improves the toughness. Carbon steel is a popular metal choic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RML 12-inch 25-ton Gun Diagrams
RML may refer to: *RML Group, a motorsports and high performance engineering company *RML 380Z, an 8-bit computer built in Britain *Ratmalana Airport (IATA: RML), near Colombo, Sri Lanka *Reuters Market Light, a phone service to provide Indian farmers with timely information *Revised Marriage Law, a 1980 revision of the New Marriage Law in China *Riemann Musiklexikon, a music encyclopedia *Rifled muzzle loader, a type of gun common in the 19th century *AEC Routemaster, a type of double-decker bus *Rocket Madsen Space Lab (RML Spacelab), Copenhagen, Denmark *Rocky Mountain Laboratories, a research institute in Montana, United States *Roddenbery Memorial Library, in Cairo, Georgia, United States *Royal Mail Lines, once a major shipping company, the successor to the Royal Mail Steam Packet Company The Royal Mail Steam Packet Company was a British shipping company founded in London in 1839 by a Scot, James MacQueen. The line's motto was ''Per Mare Ubique'' (everywhere by sea). Afte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Hotspur (1870)
HMS ''Hotspur'' was a Victorian Royal Navy ironclad ram – a warship armed with guns but whose primary weapon was a ram. Background It had been recognised since the time of the Roman Empire or before that a ship, while it might carry weaponry, was itself a potent weapon if used as a missile against other ships. In the era of sail-powered warships with their intrinsic limitations of speed and manoeuverability the practice of ramming opponents fell by default into disuse, although the concept remained alive. With the advent of steam-powered vessels, with their enhanced speed and lack of dependence for direction on the wind, the ram as a potent weapon of attack gained credibility in Naval circles and in Ship Constructors' departments. This first became apparent in the American Civil War, when many attempts were made by ships on both sides to ram their opponents, with almost uniform lack of success. (The Confederate '' Virginia (ex-Merrimack)'' rammed and sank the Federal ''C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
