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Comus-class Corvette
The ''Comus'' class was a class of Royal Navy steam corvettes, re-classified as third-class cruisers in 1888. All were built between 1878 and 1881. The class exemplifies the transitional nature of the late Victorian navy. In design, materials, armament, and propulsion the class members resemble their wooden sailing antecedents, but blended with characteristics of the all-metal mastless steam cruisers which followed. Despite their qualities they had relatively short commissions, as they soon were rendered superfluous by the "flood of warships" built under the Naval Defence Act of 1889. By the turn of the century all were in reserve, relegated to subsidiary duties, or being scrapped. Purpose Great Britain had a worldwide empire, founded upon and sustained by seaborne commerce. To protect this trade and police its empire, Britain constructed many small and medium-sized cruisers, the latter typically armed with guns up to six inches in calibre. They were designed to serve long ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galvanic Corrosion
Galvanic corrosion (also called bimetallic corrosion or dissimilar metal corrosion) is an electrochemical process in which one metal corrodes preferentially when it is in electrical contact with another, in the presence of an electrolyte. A similar galvanic reaction is exploited in primary cells to generate a useful electrical voltage to power portable devices. This phenomenon is named after Italian physician Luigi Galvani (1737-1798). Overview Dissimilar metals and alloys have different electrode potentials, and when two or more come into contact in an electrolyte, one metal (that's more reactive) acts as anode and the other (that's less reactive) as cathode. The electropotential difference between the reactions at the two electrodes is the driving force for an accelerated attack on the anode metal, which dissolves into the electrolyte. This leads to the metal at the anode corroding more quickly than it otherwise would and corrosion at the cathode being inhibited. The presenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gunwale
The gunwale () is the top edge of the hull of a ship or boat. Originally the structure was the "gun wale" on a sailing warship, a horizontal reinforcing band added at and above the level of a gun deck to offset the stresses created by firing artillery. Over time it remained as a valuable stiffener mounted inboard of the sheer strake on commercial and recreational craft. In modern boats, it is the top edge of the hull where there is usually some form of stiffening, often in the form of traditional wooden boat construction members called the "inwale" and "outwale". On a canoe, the gunwale is typically the widened edge at the top of its hull, reinforced with wood, plastic or aluminum, to carry the thwarts. On a narrowboat A narrowboat is a particular type of canal boat, built to fit the narrow locks of the United Kingdom. The UK's canal system provided a nationwide transport network during the Industrial Revolution, but with the advent of the railways, commerc ... or c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chainplate
A chainplate is a metal plate used to fasten a shroud or stay to the hull of a sailboat. One end of the chainplate is normally fastened to a turnbuckle A turnbuckle, stretching screw or bottlescrew is a device for adjusting the tension or length of ropes, cables, tie rods, and other tensioning systems. It normally consists of two threaded eye bolts, one screwed into each end of a small metal f ... which is connected to the shroud or stay, whereas the remainder of the chainplate normally has multiple holes that are bolted to the hull. This distributes the load across the hull, making it possible for a somewhat lighter hull to support the load of the shrouds and stays. References {{reflist[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shroud (sailing)
On a sailing boat, the shrouds are pieces of standing rigging which hold the mast up from side to side. There is frequently more than one shroud on each side of the boat. Usually a shroud will connect at the top of the mast, and additional shrouds might connect partway down the mast, depending on the design of the boat. Shrouds terminate at their bottom ends at the chain plates, which are tied into the hull. They are sometimes held outboard by channels, a ledge that keeps the shrouds clear of the gunwales.''The Lore of Ships,'' ed. by Bengt Kihlberg. Göteborg :Tre tryckare & New York: Holt, Rinehart & Winston, 1963. Shrouds are attached symmetrically on both the port and starboard sides. For those shrouds which attach high up the mast, a structure projecting from the mast must be used to increase the angle of the shroud at the attachment point, providing more support to the mast. On most sailing boats, such structures are called spreaders, and the shrouds they hold continue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Studding Sail
A studding sail, or stun'sl (pronounced stuns'l ) is an extra sail on a square rigged vessel for use in fair weather. It is set outside the square sails, using stun'sl booms which run out along the yards. They came into use some time in the middle of the 17th century and by the beginning of the 19th century were usual on all square rigged sailing vessels. They started to become less common in the last quarter of the 19th century, as the economies of smaller crews and avoidance of damage to the ship's gear became more important than a fast voyage. History The origins of studding sails are relatively uncertain. The earliest reference is in 1655, but precise information on how these early examples were rigged is unknown. It is not until 1790 that this is available. Some changes in the detail of design and usage occurred over succeeding years. All ordinary working square-rigged vessels were usually fitted out to set stun'sls by the start of the 19th century. This started to change ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Rig
A full-rigged ship or fully rigged ship is a sailing vessel's sail plan with three or more masts, all of them square-rigged. A full-rigged ship is said to have a ship rig or be ship-rigged. Such vessels also have each mast stepped in three segments: lower mast, top mast, and topgallant mast. Other large, multi-masted sailing vessels may be regarded as ships while lacking one of the elements of a full-rigged ship, e.g. having one or more masts support only a fore-and-aft sail or having a mast that only has two segments. Masts The masts of a full-rigged ship, from bow to stern, are: * Foremast, which is the second tallest mast * Mainmast, the tallest * Mizzenmast, the third tallest * Jiggermast, which may not be present but will be fourth tallest if so If the masts are of wood, each mast is in three or more pieces. They are (in order, from bottom up): * The lowest piece is called the ''mast'' or the ''lower''. * Topmast * Topgallant mast * Royal mast, if fitted On steel-mas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barque
A barque, barc, or bark is a type of sailing ship, sailing vessel with three or more mast (sailing), masts having the fore- and mainmasts Square rig, rigged square and only the mizzen (the aftmost mast) Fore-and-aft rig, rigged fore and aft. Sometimes, the mizzen is only partly fore-and-aft rigged, bearing a square-rigged sail above. Etymology The word "barque" entered English via the French term, which in turn came from the Latin language, Latin ''barca'' by way of Occitan language, Occitan, Catalan language, Catalan, Spanish, or Italian. The Latin ''barca'' may stem from Celtic language, Celtic ''barc'' (per Rudolf Thurneysen, Thurneysen) or Greek ''baris'' (per Friedrich Christian Diez, Diez), a term for an Egyptian boat. The ''Oxford English Dictionary'', however, considers the latter improbable. The word ''barc'' appears to have come from Celtic languages. The form adopted by English, perhaps from Irish language, Irish, was "bark", while that adopted by Latin as ''barca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarter Gallery
A quarter gallery is an architectural feature of the stern of a sailing ship from around the 16th to the 19th century. Quarter galleries are a kind of balcony, typically placed on the sides of the sterncastle, the high, tower-like structure at the back of a ship that housed the officer's quarters. They functioned primarily as latrines for the ship's officers, and in inclement weather they also afforded those officers a view of the forward sails of the ship without having to go outside. On certain vessels and under certain conditions, the quarter galleries could serve as a firing platform for the ship's marines and sharpshooter A sharpshooter is one who is highly proficient at firing firearms or other projectile weapons accurately. Military units composed of sharpshooters were important factors in 19th-century combat. Along with "marksman" and "expert", "sharpshooter" i ...s during boarding actions. The galleries also provided a structure that was ideally suited for attaching de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comus Class Corvette Diagrams Brasseys 1888
In Greek mythology, Comus (; grc, Κῶμος, ''Kōmos'') is the god of festivity, revels and nocturnal dalliances. He is a son and a cup-bearer of the god Dionysus. He was represented as a winged youth or a child-like satyr and represents anarchy and chaos. His mythology occurs in the later times of antiquity. During his festivals in Ancient Greece, men and women exchanged clothes. He was depicted as a young man on the point of unconsciousness from drink. He had a wreath of flowers on his head and carried a torch that was in the process of being dropped. Unlike the purely carnal Pan or purely intoxicated Dionysos, Comus was a god of excess. Comus in art A description of Comus as he appeared in painting is found in '' Imagines'' (Greek Εἰκόνες, translit. Eikones) by Philostratus the Elder, a Greek writer and sophist of the 3rd century AD. Comus appears at the start of the masque ''Pleasure Reconciled to Virtue'' by Ben Jonson and in ''Les fêtes de Paphos'' (''T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comus ILN2
In Greek mythology, Comus (; grc, Κῶμος, ''Kōmos'') is the god of festivity, revels and nocturnal dalliances. He is a son and a cup-bearer of the god Dionysus. He was represented as a winged youth or a child-like satyr and represents anarchy and chaos. His mythology occurs in the later times of antiquity. During his festivals in Ancient Greece, men and women exchanged clothes. He was depicted as a young man on the point of unconsciousness from drink. He had a wreath of flowers on his head and carried a torch that was in the process of being dropped. Unlike the purely carnal Pan or purely intoxicated Dionysos, Comus was a god of excess. Comus in art A description of Comus as he appeared in painting is found in '' Imagines'' ( Greek Εἰκόνες, translit. Eikones) by Philostratus the Elder, a Greek writer and sophist of the 3rd century AD. Comus appears at the start of the masque ''Pleasure Reconciled to Virtue'' by Ben Jonson and in '' Les fêtes de Paphos'' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portsmouth
Portsmouth ( ) is a port and city in the ceremonial county of Hampshire in southern England. The city of Portsmouth has been a unitary authority since 1 April 1997 and is administered by Portsmouth City Council. Portsmouth is the most densely populated city in the United Kingdom, with a population last recorded at 208,100. Portsmouth is located south-west of London and south-east of Southampton. Portsmouth is mostly located on Portsea Island; the only English city not on the mainland of Great Britain. Portsea Island has the third highest population in the British Isles after the islands of Great Britain and Ireland. Portsmouth also forms part of the regional South Hampshire conurbation, which includes the city of Southampton and the boroughs of Eastleigh, Fareham, Gosport, Havant and Waterlooville. Portsmouth is one of the world's best known ports, its history can be traced to Roman times and has been a significant Royal Navy dockyard and base for centuries. Portsm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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