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Castle-class Corvette
The Castle-class corvette was an ocean going convoy escort developed by the United Kingdom during the Second World War. It was the follow-on to the , and designed to be built in shipyards that were producing the Flowers. The Castle-class was a general improvement over the smaller Flowers which were designed for coastal rather than open ocean use. The Castle-class corvettes started appearing in service during late 1943. Background In mid-1939, the Admiralty ordered 175 Flower-class corvettes for protecting shipping on the east coast of Britain. They were designed to be built in large numbers in small shipyards and so not compete with other warships for construction. By the time the Flowers began entering service in late-1940, due to their long range they were required to undertake missions beyond coastal waters.Friedman (2006): page 134Friedman (2006): page 135 The Flowers were unsuited for open-ocean escort missions in the North Atlantic, especially in poor weather; they lac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Convoy Rescue Ship
A convoy is a group of vehicles, typically motor vehicles or ships, traveling together for mutual support and protection. Often, a convoy is organized with armed defensive support and can help maintain cohesion within a unit. It may also be used in a non-military sense, for example when driving through remote areas. Naval convoys Age of Sail Naval convoys have been in use for centuries, with examples of merchant ships traveling under naval protection dating to the 12th century. The use of organized naval convoys dates from when ships began to be separated into specialist classes and national navies were established. By the French Revolutionary Wars of the late 18th century, effective naval warfare, naval convoy naval tactics, tactics had been developed to ward off pirates and privateers. Some convoys contained several hundred merchant ships. The most enduring system of convoys were the Spanish treasure fleets, that sailed from the 1520s until 1790. When merchant ships sailed in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Republic Of China (1912–1949)
The Republic of China (ROC), between 1912 and 1949, was a sovereign state recognised as the official designation of China when it was based on Mainland China, prior to the Retreat of the government of the Republic of China to Taiwan, relocation of Government of the Republic of China, its central government to Taiwan as a result of the Chinese Civil War. At a Population history of China, population of 541 million in 1949, it was the List of countries and dependencies by population, world's most populous country. Covering , it consisted of 35 provinces of China, provinces, 1 Special administrative regions of China#ROC special administrative regions, special administrative region, 2 regions, 12 special municipality (Republic of China), special municipalities, 14 leagues, and 4 special banners. The China, People's Republic of China (PRC), which rules mainland China today, considers ROC as a country that ceased to exist since 1949; thus, the history of ROC before 1949 is often ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type VII Submarine
Type VII U-boats were the most common type of German World War II U-boat. 703 boats were built by the end of the war. The lone surviving example, , is on display at the Laboe Naval Memorial located in Laboe, Schleswig-Holstein, Germany. Conception and production The Type VII was based on earlier German submarine designs going back to the World War I Type UB III and especially the cancelled Type UG. The type UG was designed through the Dutch dummy company ''NV Ingenieurskantoor voor Scheepsbouw Den Haag'' (I.v.S) to circumvent the limitations of the Treaty of Versailles, and was built by foreign shipyards. The Finnish ''Vetehinen'' class and Spanish Type E-1 also provided some of the basis for the Type VII design. These designs led to the Type VII along with Type I, the latter being built in AG Weser shipyard in Bremen, Germany. The production of Type I was stopped after only two boats; the reasons for this are not certain. The design of the Type I was further used i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germany
Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated between the Baltic and North seas to the north, and the Alps to the south; it covers an area of , with a population of almost 84 million within its 16 constituent states. Germany borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, and France, Luxembourg, Belgium, and the Netherlands to the west. The nation's capital and most populous city is Berlin and its financial centre is Frankfurt; the largest urban area is the Ruhr. Various Germanic tribes have inhabited the northern parts of modern Germany since classical antiquity. A region named Germania was documented before AD 100. In 962, the Kingdom of Germany formed the bulk of the Holy Roman Empire. During the 16th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BL 4-inch Mk IX Naval Gun
The British ordnance terms#BL, BL 4-inch Mk IX naval gunMk IX = Mark 9. Britain used Roman numerals to denote Marks (models) of ordnance until after World War II. Mark IX indicates this was the ninth model of BL 4-inch gun. was a British medium-velocity naval gun introduced in 1917 as secondary armament on the battlecruisers and "large light cruisers", but which served most notably as the main armament on s throughout World War II. History World War I The gun was based on the barrel of the QF 4-inch Mk V naval gun, QF 4-inch Mk V and the breech mechanism of the BL 4-inch Mk VIII naval gun, BL 4-inch Mk VIII and was first introduced in World War I on capital ships as secondary armament in triple-gun mountings, intended to provide rapid concentrated fire. This turned out to be unworkable in practice. ''Jane's Fighting Ships'' of 1919 commented, "4-inch triples are clumsy and not liked. They are not mounted in one sleeve; have separate breech mechanism, a gun crew of 23 to ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Hadleigh Castle (K355)
HMS ''Hadleigh Castle'' (K355) was a of Britain's Royal Navy. Hadleigh Castle was the first ship to be fitted with a production version of the highly effective Squid anti-submarine mortar, the prototype of which had only been installed on board HMS ''Ambuscade'' in May 1943. She was laid down at Smiths Dock in Middlesbrough Middlesbrough ( ) is a town on the southern bank of the River Tees in North Yorkshire, England. It is near the North York Moors national park. It is the namesake and main town of its local borough council area. Until the early 1800s, the a ... on 4 April 1943 and launched on 21 June 1943 before being commissioned on 18 September 1943 References Publications * * * External links Naval-History.net Castle-class corvettes 1944 ships Ships built on the River Tees {{UK-mil-ship-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hedgehog (weapon)
The Hedgehog (also known as an ''Anti-Submarine Projector'') was a forward-throwing anti-submarine weapon that was used primarily during the Second World War. The device, which was developed by the Royal Navy, fired up to 24 spigot mortars ahead of a ship when attacking a U-boat. It was deployed on convoy escort warships such as destroyers and corvettes to supplement the depth charges. As the mortar projectiles employed contact fuzes rather than time or barometric (depth) fuzes, detonation occurred directly against a hard surface such as the hull of a submarine making it more deadly than depth charges, which relied on damage caused by hydrostatic shockwaves. During WWII out of 5,174 British depth charge attacks there were 85.5 kills, a ratio of 60.5 to 1. In comparison, the Hedgehog made 268 attacks for 47 kills, a ratio of 5.7 to 1. Development The "Hedgehog", so named because the empty rows of its launcher spigots resembled the spines on the back of a hedgehog, was a repla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scantling
Scantling is a measurement of prescribed size, dimensions, or cross sectional areas. Shipping In shipbuilding, the scantling refers to the collective dimensions of the framing (apart from the keel) to which planks or plates are attached to form the hull. The word is most often used in the plural to describe how much structural strength in the form of girders, I-beams, etc. is in a given section. The scantling length refers to the structural length of a ship. In shipping, a "full scantling vessel" is understood to be a geared ship, that can reach all parts of its own cargo spaces with its own gear. Timber and stone In regard to timber the scantling is (also "the scantlings are") the thickness and breadth, the sectional dimensions; in the case of stone the dimensions of thickness, breadth and length. The word is a variation of scantillon, a carpenter's or stonemason's measuring tool, also used of the measurements taken by it, and of a piece of timber of small size cut as a sam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Welding
Welding is a fabrication (metal), fabrication process that joins materials, usually metals or thermoplastics, by using high heat to melt the parts together and allowing them to cool, causing Fusion welding, fusion. Welding is distinct from lower temperature techniques such as brazing and soldering, which do not melting, melt the base metal (parent metal). In addition to melting the base metal, a filler material is typically added to the joint to form a pool of molten material (the weld pool) that cools to form a joint that, based on weld configuration (butt, full penetration, fillet, etc.), can be stronger than the base material. Pressure may also be used in conjunction with heat or by itself to produce a weld. Welding also requires a form of shield to protect the filler metals or melted metals from being contaminated or Oxidation, oxidized. Many different energy sources can be used for welding, including a gas flame (chemical), an electric arc (electrical), a laser, an electron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haslar
Haslar is on the south coast of England, at the southern tip of Alverstoke, on the Gosport peninsula, Hampshire. It takes its name from the Old English , meaning "hazel-landing place". It may have been named after a bank of hazel strewn on marshy grounds around Haslar Creek to make it passable and habitable in old times, or merely because hazel grew there. Royal Hospital Haslar The location consists principally of the former Royal Hospital Haslar site, now luxury housing. The site for Haslar hospital was bought in 1745; before that the land was Haslar Farm (though spelt Hasler Farm at the time) within the liberty of Alverstoke. The site was a slightly unusual location for a hospital because it was surrounded by the Gosport Creek, with no readily available access: such an area was chosen to prevent press-ganged sailors from absconding. Royal Naval Cemetery It was primarily to serve the hospital that the Haslar Royal Naval Cemetery was laid out. It contains (June 2014) Commonw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Admiralty Experiment Works
The Admiralty Experiment Works (AEW) was the British Admiralty research establishment, responsible for improving propeller design, manoeuvrability and seakeeping in Royal Navy vessels. The Experiment Works existed from 1872 to 1977 and for most of its history was based at the Haslar Gunboat Yard in Gosport, South Hampshire. It ceased independent operations in 1977, merging with the Admiralty Marine Technology Establishment and ultimately with the Defence Research Agency in the Ministry of Defence. History The Admiralty Experiment Works (AEW) was founded at Chelston Cross, Torquay, in 1872. It was Admiralty's first research establishment, and was initially structured around experimental work by engineer and naval architect William Froude, concerning methods to accelerate vessel propulsion. The Establishment was administered by the Director of Naval Construction, reporting to the Third Sea Lord in his capacity as Controller of the Navy. By 1886 its focus centered on the model te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
