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BQG-4
Passive Underwater Fire Control Feasibility System (or Study) (PUFFS) was a passive sonar system for submarines. It was designated AN/BQG-4 and was primarily installed on United States Navy conventional submarines built in the 1950s beginning with the , and also those converted to GUPPY III or otherwise modernized in the 1960s. It was also equipped on the nuclear-powered . It was also installed on the USS Thomas Edison (SSBN610) but never achieved operational status. Its transducers can be seen on pictures of the vessel. A version known as "Micropuffs" was fitted on s for the Royal Australian Navy, and as Type 2041 on the ''Upholder''-class for the British Royal Navy. This class still serves in the Royal Canadian Navy as the ''Victoria'' class, where Micropuffs is known as BQG-501. The system was notable for three tall, fin-like domes topside, except on Micropuffs installations. The system was retained on several submarines transferred by the US to foreign navies. It was associated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greater Underwater Propulsion Power Program
The Greater Underwater Propulsion Power Program (GUPPY) was initiated by the United States Navy after World War II to improve the submerged speed, maneuverability, and endurance of its submarines. (The "Y" in the acronym was added for pronounceability.) The navy began the program by testing and reverse engineering two German Type XXI U-boats— and —obtained as war reparation. That analysis led to four goals—increasing the submarines' battery capacity, streamlining the boats' structures, adding snorkels, and improving fire control systems. The navy immediately focused on designing a new class of submarine, but the Bureau of Ships believed the fleet of existing , , and submarines could be modified to incorporate the desired improvements. In June 1946, the Chief of Naval Operations approved the GUPPY project. The initial two-boat test program, implemented by the Portsmouth Naval Shipyard, eventually grew into several successive conversion programs. Those upgrades proceeded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Harder (SS-568)
USS ''Harder'' (SS-568), a , was the second ship of the United States Navy to be named for the harder, a fish of the mullet family found off South Africa. Construction and commissioning ''Harder''′s keel was laid down by the Electric Boat Company in Groton, Connecticut, on 30 June 1950. She was launched on 3 December 1951, sponsored by Kay Logan Cole, the widow of Lieutenant S. M. Logan, executive officer of the submarine , lost during World War II. ''Harder'' was commissioned on 19 August 1952. Service history After shakedown out of Newport, Rhode Island, ''Harder'' made a 1000-mile (1600-km) submerged passage from New London, Connecticut, to Nassau, Bahamas, while snorkeling. She then engaged in tests out of New London to evaluate fast attack type submarines. ''Harder'' began fleet operations out of New London in June 1953. Shortly thereafter ''Harder'' departed for the British Isles. During this voyage, she experienced mechanical difficulties with her then ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark 45 Torpedo
The Mark 45 anti-submarine torpedo, a.k.a. ASTOR, was a submarine-launched wire-guided nuclear torpedo designed by the United States Navy for use against high-speed, deep-diving, enemy submarines. This was one of several weapons recommended for implementation by Project Nobska, a 1956 summer study on submarine warfare. The -diameter torpedo was fitted with a W34 nuclear warhead. The need to maintain direct control over the warhead meant that a wire connection had to be maintained between the torpedo and submarine until detonation. Wire guidance systems were piggybacked onto this cable, and the torpedo had no homing capability. The design was completed in 1960, and 600 torpedoes were built between 1963 and 1976, when ASTOR was replaced by the Mark 48 torpedo. Design This electrically propelled, -diameter torpedo was long and weighed .Kurak (September 1966) p.147Polmar (November 1978) p.160 The W34 nuclear warhead used in ASTOR had an explosive yield of 11 kilotons. The requir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Sonar Equipment Of The United States
A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. It is typically authorized and maintained by a sovereign state, with its members identifiable by their distinct military uniform. It may consist of one or more military branches such as an army, navy, air force, space force, marines, or coast guard. The main task of the military is usually defined as defence of the state and its interests against external armed threats. In broad usage, the terms ''armed forces'' and ''military'' are often treated as synonymous, although in technical usage a distinction is sometimes made in which a country's armed forces may include both its military and other paramilitary forces. There are various forms of irregular military forces, not belonging to a recognized state; though they share many attributes with regular military forces, they are less often referred to as simply ''military''. A nation's military may f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orion Books
Orion Publishing Group Ltd. is a UK-based book publisher. It was founded in 1991 and acquired Weidenfeld & Nicolson the following year. The group has published numerous bestselling books by notable authors including Ian Rankin, Michael Connelly, Nemir Kirdar and Quentin Tarantino. History Orion Books was launched in 1992, with Orion purchasing the assets of Chapman publishers the following year. In the same year (1993), Orion acquired a warehousing and distribution centre called Littlehampton Book Services (LBS), which was based in Sussex in the UK. A majority share capital of Orion was sold to Hachette Livre in 1998, before Hachette Livre became the sole owner of the Orion Publishing Group in 2003. In December 1998, Orion acquired publishing house Cassell, whose imprints included Victor Gollancz Ltd. This imprint became a part of the Orion group and Orion also took ownership of the Cassell Military list. After acquiring Hodder Headline, Hachette UK was formed, with Orion as its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annapolis, Maryland
Annapolis ( ) is the capital city of the U.S. state of Maryland and the county seat of, and only incorporated city in, Anne Arundel County. Situated on the Chesapeake Bay at the mouth of the Severn River, south of Baltimore and about east of Washington, D.C., Annapolis forms part of the Baltimore–Washington metropolitan area. The 2020 census recorded its population as 40,812, an increase of 6.3% since 2010. This city served as the seat of the Confederation Congress, formerly the Second Continental Congress, and temporary national capital of the United States in 1783–1784. At that time, General George Washington came before the body convened in the new Maryland State House and resigned his commission as commander of the Continental Army. A month later, the Congress ratified the Treaty of Paris of 1783, ending the American Revolutionary War, with Great Britain recognizing the independence of the United States. The city and state capitol was also the site of the 1786 An ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Naval Institute
The United States Naval Institute (USNI) is a private non-profit military association that offers independent, nonpartisan forums for debate of national security issues. In addition to publishing magazines and books, the Naval Institute holds several annual conferences. The Naval Institute is based in Annapolis, Maryland. Established in 1873, the Naval Institute claimed "almost 50,000 members" in 2020, mostly active and retired personnel of the United States Navy, Marine Corps, and Coast Guard. The organization also has members in over 90 countries. The organization has no official or funding ties to the United States Naval Academy or the U.S. Navy, though it is based on the grounds of the Naval Academy through permission granted by a 1936 Act of Congress. History The U.S. Naval Institute was formed on October 9, 1873 by fifteen naval officers gathered at the U.S. Naval Academy's Department of Physics and Chemistry building in Annapolis to discuss, among other topics, the impli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Submarine
A nuclear submarine is a submarine powered by a nuclear reactor, but not necessarily nuclear-armed. Nuclear submarines have considerable performance advantages over "conventional" (typically diesel-electric) submarines. Nuclear propulsion, being completely independent of air, frees the submarine from the need to surface frequently, as is necessary for conventional submarines. The large amount of power generated by a nuclear reactor allows nuclear submarines to operate at high speed for long periods, and the long interval between refuelings grants a range virtually unlimited, making the only limits on voyage times being imposed by such factors as the need to restock food or other consumables. The limited energy stored in electric batteries means that even the most advanced conventional submarine can only remain submerged for a few days at slow speed, and only a few hours at top speed, though recent advances in air-independent propulsion have somewhat ameliorated this disadv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Canadian Navy
The Royal Canadian Navy (RCN; french: Marine royale canadienne, ''MRC'') is the Navy, naval force of Canada. The RCN is one of three environmental commands within the Canadian Armed Forces. As of 2021, the RCN operates 12 frigates, four attack submarines, 12 coastal defence vessels, eight patrol class training vessels, two offshore patrol vessels, and several auxiliary vessels. The RCN consists of 8,570 Regular Force and 4,111 Primary Reserve sailors, supported by 3,800 civilians. Vice-Admiral Angus Topshee is the current commander of the Royal Canadian Navy and chief of the Naval Staff. Origins of the Royal Canadian Navy, Founded in 1910 as the Naval Service of Canada (French: ''Service naval du Canada'') and given royal sanction on 29 August 1911, the RCN was amalgamated with the Royal Canadian Air Force and the Canadian Army to form the Unification of the Canadian Forces, unified Canadian Armed Forces in 1968, after which it was known as Maritime Command (French: ''Commandemen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onslow Fin And Micropuffs
Onslow may refer to: Places *Onslow, Western Australia, Australia, a town *Onslow, Nova Scotia, Canada, an unincorporated community **Onslow Speedway *Borough of Onslow, New Zealand *Onslow (New Zealand electorate), a New Zealand parliamentary electorate *Lake Onslow, New Zealand, a man-made lake *Onslow Village, an area of Guildford, Surrey, UK *Onslow, Iowa, U.S. *Onslow County, North Carolina, U.S. *Onslow Bay, North Carolina, U.S. Ships * HMS ''Onslow'' (1916), an Admiralty M-class destroyer * HMS ''Onslow'' (G17), an O-class destroyer launched in March 1941 ** HMS ''Pakeham'', a destroyer launched in January 1941 that exchanged named with the O-class destroyer before commissioning * HMAS ''Onslow'', a submarine of the Royal Australian Navy * USS ''Onslow'' (AVP-48), a United States Navy seaplane tender Titles *Earl of Onslow, an extant title in the Peerage of the United Kingdom *Onslow baronets, two titles, both extant People *Onslow (surname) *Onslow (given name) Othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Upholder/Victoria-class Submarine
The ''Upholder''/''Victoria''-class submarines, also known as the Type 2400 (due to their displacement of 2,400 tonnes), are the class of the diesel-electric submarines built in the United Kingdom in the 1980s to supplement the nuclear submarines in the Submarine Service of the British Royal Navy. The boats were originally named the ''Upholder'' class, after the most renowned vessel of the former U class. Their British service life was short, with the vessels being decommissioned in 1994. After an unsuccessful bid to transfer these submarines to the Pakistan Navy in 1993–1994, the Canadian government eventually purchased the submarines and a suite of trainers from the Royal Navy for Canadian Forces Maritime Command (renamed to Royal Canadian Navy in 2011) to replace their decommissioned s in 1998. In Canadian service, the submarines are classified as the ''Victoria'' class. These submarines initially suffered from serious electrical problems and were beset by mechanical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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