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HMS Barrosa (D68)
HMS ''Barrosa'' (D68) was a later or 1943 fleet destroyer of the Royal Navy. Design and construction The Battle-class was developed as a result of operational experience in the early years of the Second World War, which had shown that the Royal Navy's existing destroyers had inadequate anti-aircraft protection, and in particular, lacked a modern dual-purpose main gun armament, capable of dealing with both surface targets and air attack, with guns lacking the high elevation mountings necessary to deal with dive bombers. The resulting design was armed with two twin 4.5 inch high-angle gun-turrets of a new design mounted forward and a heavy close-in anti-aircraft armament, with 16 Battle-class destroyers ordered under the 1942 construction programme. For the 1943 construction programme, 24 Battle-class destroyers of a revised design (known as "1943 Battles") were ordered, with four destroyers (''Barrosa'', , ''Talavera'' and ''Trincomalee'') to be built by the Scottish shipbui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Displacement (ship)
The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into weight. Traditionally, various measurement rules have been in use, giving various measures in long tons. Today, tonnes are more commonly used. Ship displacement varies by a vessel's degree of load, from its empty weight as designed (known as "lightweight tonnage") to its maximum load. Numerous specific terms are used to describe varying levels of load and trim, detailed below. Ship displacement should not be confused with measurements of volume or capacity typically used for commercial vessels and measured by tonnage: net tonnage and gross tonnage. Calculation The process of determining a vessel's displacement begins with measuring its draft.George, 2005. p.5. This is accomplished by means of its "draft marks" (or "load lines"). A mer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loch-class Frigate
The Loch class was a class of anti-submarine (A/S) frigate built for the Royal Navy and her Allies during World War II. They were an innovative design based on the experience of three years of fighting in the Battle of the Atlantic and attendant technological advances. Some shipyards had trouble building these larger ships, which led to widespread use of the Castle-class corvette, introduced around the same time. Design The Lochs were based upon the hull of the preceding with increased sheer and flare to improve seakeeping and modified to suit it to mass pre-fabrication, with sections riveted or welded together at the shipyard. Accordingly, as many curves as possible were eliminated, producing a noticeable kink in the main deck where the increased sheer forwards met the level abreast the bridge. The fighting capability of the Loch class was a great jump forward, being based around the new Squid ahead-throwing A/S mortar. Previously, escorts had attacked with depth charges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sister Ship
A sister ship is a ship of the same class or of virtually identical design to another ship. Such vessels share a nearly identical hull and superstructure layout, similar size, and roughly comparable features and equipment. They often share a common naming theme, either being named after the same type of thing or person (places, constellations, heads of state) or with some kind of alliteration. Typically the ship class is named for the first ship of that class. Often, sisters become more differentiated during their service as their equipment (in the case of naval vessels, their armament) are separately altered. For instance, the U.S. warships , , , and are all sister ships, each being an . Perhaps the most famous sister ships were the White Star Line's s, consisting of , and . As with some other liners, the sisters worked as running mates. Other sister ships include the Royal Caribbean International's and . ''Half-sister'' refers to a ship of the same class but with some s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porthole
A porthole, sometimes called bull's-eye window or bull's-eye, is a generally circular window used on the hull of ships to admit light and air. Though the term is of maritime origin, it is also used to describe round windows on armored vehicles, aircraft, automobiles (the Ford Thunderbird a notable example) and even spacecraft. On a ship, the function of a porthole, when open, is to permit light and fresh air to enter the dark and often damp below- deck quarters of the vessel. It also affords below-deck occupants a limited view to the outside world. When closed, the porthole provides a strong water-tight, weather-tight and sometimes light-tight barrier. A porthole on a ship may also be called a sidescuttle or side scuttle (side hole), as officially termed in the International Convention for the Safety of Life at Sea. This term is used in the U.S. Code of Federal Regulations. It is also used in related rules and regulations for the construction of ships. The use of the word "si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Replenishment Oiler
A replenishment oiler or replenishment tanker is a naval auxiliary ship with fuel tanks and dry cargo holds which can supply both fuel and dry stores during underway replenishment (UNREP) at sea. Many countries have used replenishment oilers. The United States Navy's hull classification symbol for this type of ship was AOR. Replenishment oilers are slower and carry fewer dry stores than the U.S. Navy's modern fast combat support ships, which carry the classification AOE. History The development of the "oiler" paralleled the change from coal- to oil-fired boilers in warships. Prior to the adoption of oil fired machinery, navies could extend the range of their ships either by maintaining coaling stations or for warships to raft together with colliers and for coal to be manhandled aboard. Though arguments related to fuel security were made against such a change, the ease with which liquid fuel could be transferred led in part to its adoption by navies worldwide. One of the first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4th Destroyer Flotilla
The British 4th Destroyer Flotilla , or Fourth Destroyer Flotilla, was a naval formation of the Royal Navy from August 1909 to July 1951. History In 1907 the Home Fleet had a large formation of destroyers called the Home Fleet Flotilla of destroyers, Between February and June 1909 it was divided to form the 2nd and 4th Destroyer Flotillas. Between 1909 and 1912 it was part of the Home Fleet - 3rd Division at Portsmouth. From 1912 to August 1914 it was reassigned and operating with the 1st Fleet. At the start of World War One the flotilla was reassigned to the new Grand Fleet and was engaged at the Battle of Jutland it remained with the GF until September 1916 when it was transferred to the Humber Force that was receiving shore support from the Humber Station till December 1916. The flotilla was next allocated to the Portsmouth Command until July 1917. After being ordered to leave Portsmouth it was reassigned to the Commander-in-Chief, Devonport where it remained till November ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceremonial Ship Launching
Ceremonial ship launching involves the performance of ceremonies associated with the process of transferring a vessel to the water. It is a nautical tradition in many cultures, dating back thousands of years, to accompany the physical process with ceremonies which have been observed as public celebration and a solemn blessing, usually but not always, in association with the launch itself. Ship launching imposes stresses on the ship not met during normal operation and, in addition to the size and weight of the vessel, represents a considerable engineering challenge as well as a public spectacle. The process also involves many traditions intended to invite good luck, such as christening by breaking a sacrificial bottle of champagne over the bow as the ship is named aloud and launched. Methods There are three principal methods of conveying a new ship from building site to water, only two of which are called "launching". The oldest, most familiar, and most widely used is th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yard Number
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Keel Laying
Laying the keel or laying down is the formal recognition of the start of a ship's construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship. Keel laying is one of the four specially celebrated events in the life of a ship; the others are launching, commissioning and decommissioning. In earlier times, the event recognized as the keel laying was the initial placement of the central timber making up the backbone of a vessel, called the keel. As steel ships replaced wooden ones, the central timber gave way to a central steel beam. Modern ships are most commonly built in a series of pre-fabricated, complete hull sections rather than around a single keel. The event recognized as the keel laying is the first joining of modular components, or the lowering of the first module into place in the building dock. It is now often called "keel authentication", and is the ceremonial beginning of the ship's life ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pacific and Indian Oceans. Its Metropolitan France, metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea; overseas territories include French Guiana in South America, Saint Pierre and Miquelon in the North Atlantic, the French West Indies, and many islands in Oceania and the Indian Ocean. Due to its several coastal territories, France has the largest exclusive economic zone in the world. France borders Belgium, Luxembourg, Germany, Switzerland, Monaco, Italy, Andorra, and Spain in continental Europe, as well as the Kingdom of the Netherlands, Netherlands, Suriname, and Brazil in the Americas via its overseas territories in French Guiana and Saint Martin (island), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Barrosa
The Battle of Barrosa (Chiclana, 5 March 1811, also known as the Battle of Chiclana or Battle of Cerro del Puerco) was part of an unsuccessful manoeuvre by an Anglo-Iberian force to break the French siege of Cádiz during the Peninsular War. During the battle, a single British Division (military), division defeated two French divisions and captured a French Imperial Eagle, regimental eagle. Cádiz had been Investment (military), invested by the French in early 1810, leaving it accessible from the sea, but in March of the following year a reduction in the besieging army gave its garrison of British and Spanish troops an opportunity to lift the siege. A large Allied strike force was shipped south from Cádiz to Tarifa, and moved to engage the siege lines from the rear. The French, under the command of Claude Victor-Perrin, Duc de Belluno, Marshal Victor, were aware of the Allied movement and redeployed to prepare a trap. Victor placed one division on the road to Cádiz, blocki ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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