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HMCS Annapolis (DDH 265)
HMCS ''Annapolis'' was an that served in the Royal Canadian Navy and later, the Canadian Forces. She was the second Canadian naval unit to carry this name. Named for the Annapolis River that flows through Nova Scotia, the ship entered service in 1964, the last of the design.Macpherson and Barrie (2002), p. 260 Serving through the Cold War, ''Annapolis'' was decommissioned in 1998 before going through a protracted legal battle for use as an artificial reef. She was finally scuttled as such in 2015 off the coast of British Columbia. Design and description The Royal Canadian Navy had intended to place a six ship order under the of destroyer escorts; however, during the design phase, the last two vessels ordered were altered to the DDH design and were classed under the new ''Annapolis'' designation. The ships measured in length, with a beam of and a draught of .Gardiner and Chumbley, p. 44Macpherson and Barrie have the ships at 371 feet long, and a draught of 13 feet 8 inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annapolis River
The Annapolis River (french: Rivière Annapolis) is a Canadian river located in Nova Scotia's Annapolis Valley. Geography Measuring 120 kilometres in length, the river flows southwest through the western part of the valley from its source in Caribou Bog (50 m 60 ftabove sea level) near the villages of Aylesford and Berwick in western Kings County, to its mouth at Port Royal where it empties into the Annapolis Basin. The estuary portion of the Annapolis River runs from Bridgetown to Port Royal and experiences a tidal range of approximately between tides. The eastern part of the Annapolis Valley is drained by the Cornwallis River, also rising in the Caribou Bog, which has been dated to 10,000 years old. According to estimates by the Province of Nova Scotia, there were 31,877 people resident within the Annapolis River watershed in 2011. The river flows through some of the most productive agricultural land in the province. The comparatively mild micro-climate produced by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gun Turret
A gun turret (or simply turret) is a mounting platform from which weapons can be fired that affords protection, visibility and ability to turn and aim. A modern gun turret is generally a rotatable weapon mount that houses the crew or mechanism of a projectile-firing weapon and at the same time lets the weapon be aimed and fired in some degree of azimuth and elevation (cone of fire). Description Rotating gun turrets protect the weapon and its crew as they rotate. When this meaning of the word "turret" started being used at the beginning of the 1860s, turrets were normally cylindrical. Barbettes were an alternative to turrets; with a barbette the protection was fixed, and the weapon and crew were on a rotating platform inside the barbette. In the 1890s, armoured hoods (also known as "gun houses") were added to barbettes; these rotated with the platform (hence the term "hooded barbette"). By the early 20th Century, these hoods were known as turrets. Modern warships have gu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hull Classification Symbol (Canada)
The Royal Canadian Navy uses hull classification symbols to identify the types of its ships, which are similar to the United States Navy's hull classification symbol system. The Royal Navy and some European and Commonwealth navies (19 in total) use a somewhat analogous system of pennant numbers. In a ship name such as the ship prefix HMCS for His or Her Majesty's Canadian Ship indicates the vessel is a warship in service to the Monarch of Canada, while the proper name ''Algonquin'' may follow a naming convention for the class of vessel. The hull classification symbol in the example is the parenthetical suffix (DDG 283), where the hull classification type DDG indicates that the ''Algonquin'' is a guided-missile destroyer and the hull classification number 283 is unique within that type. Listed below are various hull classification types with some currently in use and others that are retired and no longer in use. Auxiliary ships * AGOR: Auxiliary General Oceanographic Rese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Commissioning
Ship commissioning is the act or ceremony of placing a ship in active service and may be regarded as a particular application of the general concepts and practices of project commissioning. The term is most commonly applied to placing a warship in active duty with its country's military forces. The ceremonies involved are often rooted in centuries-old naval tradition. Ship naming and launching endow a ship hull with her identity, but many milestones remain before she is completed and considered ready to be designated a commissioned ship. The engineering plant, weapon and electronic systems, galley, and other equipment required to transform the new hull into an operating and habitable warship are installed and tested. The prospective commanding officer, ship's officers, the petty officers, and seamen who will form the crew report for training and familiarization with their new ship. Before commissioning, the new ship undergoes sea trials to identify any deficiencies needing c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Naming And 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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digby—Annapolis—Kings
Digby—Annapolis—Kings was a federal electoral district in the province of Nova Scotia, Canada, that was represented in the House of Commons of Canada from 1935 to 1949, and from 1953 to 1968. This riding was created in 1933 from parts of Digby—Annapolis and Hants—Kings ridings. It consisted of the counties of Kings and Annapolis and the county of Digby excluding the municipality of Clare. The district was abolished in 1947 when it was redistributed between Annapolis—Kings and Digby—Yarmouth ridings. The district was created again in 1952 from Annapolis—Kings and Digby—Yarmouth. It consisted of the counties of Kings and Annapolis and the county of Digby excluding the Municipality of Clare. It was abolished in 1966 when it was redistributed between Annapolis Valley and South Western Nova ridings. Members of Parliament This riding elected the following Members of Parliament: Election results 1935–1949 1953–1968 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Nowlan
George Clyde Nowlan, (14 August 1898 – 31 May 1965) was a Canadian Member of Parliament and Cabinet Minister. A member of the Progressive Conservative Party of Canada, he served from 9 August 1962–21 April 1963 as the Minister of Finance in the administration of John Diefenbaker, and was also responsible for the CBC. Early life and education Nowlan was a soldier in the Canadian Expeditionary Force during the First World War. After the war ended, he returned to the Annapolis Valley of Nova Scotia and attended Acadia University to study for a Bachelor of Arts, graduating in 1920. He then studied law at Dalhousie University. Political career Nowlan was an MLA in the Nova Scotia Legislature in the 1920s, and was always known for his reputation as a hard worker and a Party Man. He served a term as the Progressive Conservative Party's president. While serving as Minister of National Revenue in 1962, he forbid Customs to censor or ban entrance to any publication unless a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variable Depth Sonar
A towed array sonar is a system of hydrophones towed behind a submarine or a surface ship on a cable. Trailing the hydrophones behind the vessel, on a cable that can be kilometers long, keeps the array's sensors away from the ship's own noise sources, greatly improving its signal-to-noise ratio, and hence the effectiveness of detecting and tracking faint contacts, such as quiet, low noise-emitting submarine threats, or seismic signals. A towed array offers superior resolution and range compared with hull mounted sonar. It also covers the baffles, the blind spot of hull mounted sonar. However, effective use of the system limits a vessel's speed and care must be taken to protect the cable from damage. History During World War I, a towed sonar array known as the "Electric Eel" was developed by Harvey Hayes, a U.S. Navy physicist. This system is believed to be the first towed sonar array design. It employed two cables, each with a dozen hydrophones attached. The project was disconti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark 46 Torpedo
The Mark 46 torpedo is the backbone of the United States Navy's lightweight anti-submarine warfare torpedo inventory and is the NATO standard. These aerial torpedoes are designed to attack high-performance submarines. In 1989, an improvement program for the Mod 5 to the Mod 5A and Mod 5A(S) increased its shallow-water performance. The Mark 46 was initially developed as Research Torpedo Concept I (RETORC I), one of several weapons recommended for implementation by Project Nobska, a 1956 summer study on submarine warfare. Design details ;Mark 46, Mod 5 * Primary Function: Air and ship-launched lightweight torpedoThomas, Vincent C. ''The Almanac of Seapower 1987'' Navy League of the United States (1987) pp.190-191 * Contractor: Alliant Techsystems * Power Plant: Two-speed, reciprocating external combustion; Mono-propellant ( Otto fuel II) * Length: tube launch configuration (from ship),Polmar, Norman "The Ships and Aircraft of the U.S. Fleet: Torpedoes" ''United States Naval Ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torpedo Tube
A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboard surface vessels. Deck-mounted torpedo launchers are usually designed for a specific type of torpedo, while submarine torpedo tubes are general-purpose launchers, and are often also capable of deploying mines and cruise missiles. Most modern launchers are standardized on a diameter for light torpedoes (deck mounted aboard ship) or a diameter for heavy torpedoes (underwater tubes), although other sizes of torpedo tube have been used: see Torpedo classes and diameters. Submarine torpedo tube A submarine torpedo tube is a more complex mechanism than a torpedo tube on a surface ship, because the tube has to accomplish the function of moving the torpedo from the normal atmospheric pressure within the submarine into the sea at the ambien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NATO
The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two North American. Established in the aftermath of World War II, the organization implemented the North Atlantic Treaty, signed in Washington, D.C., on 4 April 1949. NATO is a collective security system: its independent member states agree to defend each other against attacks by third parties. During the Cold War, NATO operated as a check on the perceived threat posed by the Soviet Union. The alliance remained in place after the dissolution of the Soviet Union and has been involved in military operations in the Balkans, the Middle East, South Asia, and Africa. The organization's motto is '' animus in consulendo liber'' (Latin for "a mind unfettered in deliberation"). NATO's main headquarters are located in Brussels, Belgium, while ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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