Sharpshooter-class Torpedo Gunboat

picture info	Sharpshooter-class Torpedo Gunboat The ''Sharpshooter''-class torpedo gunboat was a class of torpedo gunboat built for the Royal Navy in the late 19th century. One of the class was hulked in 1904, seven were scrapped before World War I and five were converted to minesweepers. Of these minesweepers, ''Seagull'' was lost to a collision in 1918 and the rest survived the war to be broken up in the early 1920s. Design The ''Sharpshooter'' class was designed by Sir William White in 1888. They had a length overall of , a beam of and a displacement of 735 tons. They were engined with two sets of Belliss and Morcom triple-expansion steam engines, two locomotive-type boilers, and twin screws. This layout produced with natural draught and with forced draught, giving them a top speed of . They carried 100 tons of coal, giving them a range of about at and were manned by 91 sailors and officers. The following ''Alarm'' class were essentially an enlarged version of the ''Sharpshooters''. From 1895 to 1898 a series ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Spanker Spanker can refer to: * One who administers a spanking * Spanker (horse), a famous 18th-century thoroughbred race horse * Spanker, Ohio, an unincorporated community * ''SS-17 Spanker'', the NATO reporting name for the MR-UR-100 Sotka intercontinental ballistic missile * Spanker (sail) On a square rigged ship, the spanker is a gaff-rigged fore-and-aft sail set from and aft of the aftmost mast. Spankers are also called ''driver'', ''jigger'', and a ''pusher'' sail. On a schooner of four or more masts, the spanker is the sail ... , a sail. {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Triple-expansion Steam Engine A compound steam engine unit is a type of steam engine where steam is expanded in two or more stages. A typical arrangement for a compound engine is that the steam is first expanded in a high-pressure ''(HP)'' cylinder, then having given up heat and losing pressure, it exhausts directly into one or more larger-volume low-pressure ''(LP)'' cylinders. Multiple-expansion engines employ additional cylinders, of progressively lower pressure, to extract further energy from the steam. Invented in 1781, this technique was first employed on a Cornish beam engine in 1804. Around 1850, compound engines were first introduced into Lancashire textile mills. Compound systems There are many compound systems and configurations, but there are two basic types, according to how HP and LP piston strokes are phased and hence whether the HP exhaust is able to pass directly from HP to LP ( Woolf compounds) or whether pressure fluctuation necessitates an intermediate "buffer" space in the form of a st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Torpedo Gunboat Classes A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, and with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such a device was called an automotive, automobile, locomotive, or fish torpedo; colloquially a ''fish''. The term ''torpedo'' originally applied to a variety of devices, most of which would today be called mines. From about 1900, ''torpedo'' has been used strictly to designate a self-propelled underwater explosive device. While the 19th-century battleship had evolved primarily with a view to engagements between armored warships with large-caliber guns, the invention and refinement of torpedoes from the 1860s onwards allowed small torpedo boats and other lighter surface vessels, submarines/ submersibles, even improvised fishing boats or frogmen, and later light aircraft, to destroy large ships without the need of large guns, though ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	List Of Gunboats And Gunvessels Of The Royal Navy This is a list of gunboat and gunvessel classes of the Royal Navy. For gun-brigs see List of gun-brigs of the Royal Navy. Steam gunboats Wooden paddle gunboats (Indian service) * Wooden paddle gunboats (Great Lakes) Iron paddle gunboat (Great Lakes) * ''Mowhawk'' (1843) Iron paddle despatch vessels/gunboats * (1855) Wooden screw gunboats * ''Gleaner'' (or ''Pelter'') class * * (1855) * * * * (or ''Bruizer'') (cancelled) (c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Australia Station The Australia Station was the British, and later Australian, naval command responsible for the waters around the Australian continent.Dennis et al. 2008, p.53. Australia Station was under the command of the Commander-in-Chief, Australia Station, whose rank varied over time. History In the years following the establishment of the British colony of New South Wales in 1788, Royal Navy ships stationed in Australian waters formed part of the East Indies Squadron and came under the command of the East Indies Station. From the 1820s, a ship was sent annually to New South Wales, and occasionally to New Zealand. In 1848, an Australian Division of the East Indies Station was established, and in 1859 the British Admiralty established an independent command, the Australia Station, under the command of a commodore who was assigned as Commander-in-Chief, Australia Station. The Australian Squadron was created to which British naval ships serving on the Australia Station were assigned. The cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	History Of The Indian Navy Maritime powers in the Indian subcontinent have possessed navies for many centuries. Indian dynasties such as the Cholas used naval power to extend their influence overseas, particularly to Southeast Asia. The Marakkar Navy under Zamorins during 15th century and the Maratha Navy of the 17th and 18th centuries fought with rival Indian powers and European trading companies. The East India Company organised its own navy, which came to be as the Bombay Marine. With the establishment of the British Raj after the Indian Rebellion of 1857, the small navy was transformed into "His Majesty's Indian Navy", then "Her Majesty's Indian Marine", and finally the "Royal Indian Marine". The Royal Indian Marine transported large numbers of Indian troops overseas during the First World War, and – as the Royal Indian Navy – took part in naval combat and patrol duties during the Second World War. When India became independent in 1947 part of the Royal Indian Navy was allotted to the new state o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Alarm Class Torpedo Gunboat The ''Alarm''-class torpedo gunboat was the penultimate class of torpedo gunboat built for the Royal Navy. The class was contemporary with the early torpedo boat destroyers, which were faster and thus better suited to pursuit of enemy torpedo boats. By World War I the class had either been sold, converted to submarine depot ships or minesweepers, or reduced to harbour service. Three of the class were lost during World War I while serving in the minesweeping role. Design The ''Alarm'' class was designed by Sir William White in 1889 as an enlarged version of his previous ''Sharpshooter'' class. They had a length overall of , a beam of and a displacement of 810 tons. They were engined with two sets of vertical triple-expansion steam engines, two locomotive-type boilers, and twin screws. This layout produced , giving them a speed of with forced draught. They carried between 100 and 160 tons of coal and were manned by 91 sailors and officers. Thornycroft Special - HMS ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Forced Draught The difference between atmospheric pressure and the pressure existing in the furnace or flue gas passage of a boiler is termed as draft. Draft can also be referred to as the difference in pressure in the combustion chamber area which results in the motion of the flue gases and the air flow. Types of draft Drafts are produced by the rising combustion gases in the stack, flue, or by mechanical means. For example, a boiler can be put into four categories: natural, induced, balanced, and forced. Natural draft: When air or flue gases flow due to the difference in density of the hot flue gases and cooler ambient gases. The difference in density creates a pressure differential that moves the hotter flue gases into the cooler surroundings. Forced draft: When air or flue gases are maintained above atmospheric pressure. Normally it is done with the help of a forced draft fan. * Induced draft: When air or flue gases flow under the effect of a gradually decreasing pressure below atmospheric p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	William Henry White Sir William Henry White, (2 February 1845 – 27 February 1913) was a prolific British warship designer and Chief Constructor at the Admiralty. Biography White was born in Devonport, the son of Robert White, a currier, and his wife, Jane Matthews. He became an apprentice at the naval dockyard there in 1859. In 1863, he obtained a scholarship to enter the newly formed Royal School of Naval Architecture in South Kensington, in London. After his apprenticeship he worked for the Admiralty on specifications and calculations for new ships, and became secretary to the then Chief Constructor of the Admiralty, Edward Reed, until the latter's resignation on 9 July 1870. He was then appointed instructor on naval design at the Royal School of Naval Architecture, and in 1872 became secretary of the Council of Construction which oversaw all Royal Navy ship construction. From 1872–1873 he worked at Pembroke and Portsmouth Dockyards. In March 1875 he was promoted to Assistant Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Grasshopper-class Torpedo Gunboat The ''Grasshopper''-class torpedo gunboat was a class of torpedo gunboat built for the Royal Navy in the late 19th century. All three ships were scrapped before World War I. Design The ''Grasshopper'' class was designed by Nathaniel Barnaby in 1886 and were essentially repeats of the ''Rattlesnake'' of 1886. They had a length between perpendiculars of , a beam of and a displacement of . They were engined with two sets of Maudslay, Sons & Field triple-expansion steam engines, two locomotive boilers, and twin screws. This layout produced with natural draught and with forced draught The difference between atmospheric pressure and the pressure existing in the furnace or flue gas passage of a boiler is termed as draft. Draft can also be referred to as the difference in pressure in the combustion chamber area which results in the ..., giving them a top speed of . They carried 100 tons of coal, giving them a range of about at and were manned by 66 sailors and officers. Arma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Royal Navy The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against France. The modern Royal Navy traces its origins to the early 16th century; the oldest of the UK's armed services, it is consequently known as the Senior Service. From the middle decades of the 17th century, and through the 18th century, the Royal Navy vied with the Dutch Navy and later with the French Navy for maritime supremacy. From the mid 18th century, it was the world's most powerful navy until the Second World War. The Royal Navy played a key part in establishing and defending the British Empire, and four Imperial fortress colonies and a string of imperial bases and coaling stations secured the Royal Navy's ability to assert naval superiority globally. Owing to this historical prominence, it is common, even among non-Britons, to ref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]