|
HMCS Barrie (K138)
HMCS ''Barrie'' was a that served with the Royal Canadian Navy during the Second World War. The ship was constructed by Collingwood Shipyards Ltd. at Collingwood, Ontario, laid down on 4 April 1940. The ship was launched on 23 November 1940 and commissioned on 12 May 1941. The corvette was named for the city of Barrie, Ontario. ''Barrie'' served primarily in the Battle of the Atlantic as a convoy escort. Following the war, ''Barrie'' was sold to Argentinian commercial interests which converted the corvette to a cargo ship and renamed the vessel ''Gasestado''. In 1957, ''Gasestado'' was acquired by the Argentinian Navy and converted to a survey ship and renamed ARA ''Capitán Cánepa''. The Argentinian Navy discarded the ship in 1972. Design and description Flower-class corvettes such as ''Barrie'' serving with the Royal Canadian Navy (RCN) in the Second World War were different from earlier and more traditional sail-driven corvettes. The Flower-class corvettes originated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barrie, Ontario
Barrie is a city in Central Ontario, Canada, about north of Toronto. The city is within Simcoe County and located along the shores of Kempenfelt Bay. Although it is physically in the county, Barrie is politically independent. The city is part of the extended urban area in southern Ontario known as the Greater Golden Horseshoe. As of the 2021 census, the city's population was 147,829, while the census metropolitan area had a population of 212,856 residents. The area was first settled during the War of 1812 as a supply depot for British forces, and Barrie was named after Sir Robert Barrie. The city has grown significantly in recent decades due to the emergence of the technology industry. It is connected to the Greater Golden Horseshoe by Ontario Highway 400 and GO Transit. Significant sectors of the city's diversified economy include education, healthcare, information technology and manufacturing. History Before 1900 Barrie is situated on the traditional land of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argentinian Navy
The Argentine Navy (ARA; ). This forms the basis for the navy's ship prefix "ARA". is the navy of Argentina. It is one of the three branches of the Armed Forces of the Argentine Republic, together with the Army and the Air Force. The Argentine Navy day is celebrated on May 17, anniversary of the victory in 1814 at the Battle of Montevideo over the Spanish fleet during the war of Independence. History 1810–1909 The Argentine Navy was created in the aftermath of the May Revolution of May 25, 1810, which started the war for independence from Spain. The navy was first created to support Manuel Belgrano in the Paraguay campaign, but those ships were sunk by ships from Montevideo, and did not take part in that conflict. Renewed conflicts with Montevideo led to the creation of a second fleet, which participated in the capture of the city. As Buenos Aires had little maritime history, most men in the navy were from other nations, such as the Irish-born admiral William Brown, who ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QF 2-pounder Naval Gun
The 2-pounder gun, officially the QF 2-pounder ( QF denoting "quick firing") and universally known as the pom-pom, was a British autocannon, used as an anti-aircraft gun by the Royal Navy.British military of the period traditionally denoted smaller guns in terms of the approximate weight of the standard projectile, rather than by its bore diameter, which in this case was 40 mm. References to 40-mm anti-aircraft guns invariably mean the Bofors gun, while references to 2-pounder anti-aircraft guns mean this gun. The name came from the sound that the original models make when firing. This QF 2-pounder was not the same gun as the Ordnance QF 2-pounder, used by the British Army as an anti-tank gun and a tank gun, although they both fired , projectiles. Predecessors – Boer War and the Great War QF 1 pounder The first gun to be called a pom-pom was the 37 mm Nordenfelt-Maxim or "QF 1-pounder" introduced during the Second Boer War, the smallest artillery piece of that war. It fi ... [...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] |
Water-tube Boiler
A high pressure watertube boiler (also spelled water-tube and water tube) is a type of boiler in which water circulates in tubes heated externally by fire. Fuel is burned inside the furnace, creating hot gas which boils water in the steam-generating tubes. In smaller boilers, additional generating tubes are separate in the furnace, while larger utility boilers rely on the water-filled tubes that make up the walls of the furnace to generate steam. The heated water/steam mixture then rises into the steam drum. Here, saturated steam is drawn off the top of the drum. In some services, the steam passes through tubes in the hot gas path, (a superheater) to become superheated. Superheated steam is a dry gas and therefore is typically used to drive turbines, since water droplets can severely damage turbine blades. Saturated water at the bottom of the steam drum returns to the lower drum via large-bore 'downcomer tubes', where it pre-heats the feedwater supply. (In large utility boilers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propeller
A propeller (often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working fluid such as water or air. Propellers are used to pump fluid through a pipe or duct, or to create thrust to propel a boat through water or an aircraft through air. The blades are shaped so that their rotational motion through the fluid causes a pressure difference between the two surfaces of the blade by Bernoulli's principle which exerts force on the fluid. Most marine propellers are screw propellers with helical blades rotating on a propeller shaft (ship), propeller shaft with an approximately horizontal axis. History Early developments The principle employed in using a screw propeller is derived from stern sculling. In sculling, a single blade is moved through an arc, from side to side taking care to keep presenting the blade to the wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertical Triple Expansion
A compound steam engine unit is a type of steam engine where steam is expanded in two or more stages. A typical arrangement for a compound engine is that the steam is first expanded in a high-pressure (HP) cylinder, then having given up heat and losing pressure, it exhausts directly into one or more larger-volume low-pressure (LP) cylinders. Multiple-expansion engines employ additional cylinders, of progressively lower pressure, to extract further energy from the steam. Invented in 1781, this technique was first employed on a Cornish beam engine in 1804. Around 1850, compound engines were first introduced into Lancashire textile mills. Compound systems There are many compound systems and configurations, but there are two basic types, according to how HP and LP piston strokes are phased and hence whether the HP exhaust is able to pass directly from HP to LP ( Woolf compounds) or whether pressure fluctuation necessitates an intermediate "buffer" space in the form of a steam che ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draft (hull)
The draft or draught of a ship is a determined depth of the vessel below the waterline, measured vertically to its hull's lowest—its propellers, or keel, or other reference point. Draft varies according to the loaded condition of the ship. A deeper draft means the ship will have greater vertical depth below the waterline. Draft is used in under keel clearance calculations, where the draft is calculated with the available depth of water (from Electronic navigational charts) to ensure the ship can navigate safely, without grounding. Navigators can determine their draught by calculation or by visual observation (of the ship's painted load lines). Related terminology A ship's draft/draught is the "depth of the vessel below the waterline measured vertically to the lowest part of the hull, propellers, or other reference point". That is, the draft or draught is the maximum depth of any part of the vessel, including appendages such as rudders, propellers and drop keels if de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beam (nautical)
The beam of a ship is its width at its widest point. The maximum beam (BMAX) is the distance between planes passing through the outer sides of the ship, beam of the hull (BH) only includes permanently fixed parts of the hull, and beam at waterline (BWL) is the maximum width where the hull intersects the surface of the water. Generally speaking, the wider the beam of a ship (or boat), the more initial stability it has, at the expense of secondary stability in the event of a capsize, where more energy is required to right the vessel from its inverted position. A ship that heels on her ''beam ends'' has her deck beams nearly vertical. Typical values Typical length-to-beam ratios ( aspect ratios) for small sailboats are from 2:1 (dinghies to trailerable sailboats around ) to 5:1 (racing sailboats over ). Large ships have widely varying beam ratios, some as large as 20:1. Rowing shells designed for flatwater racing may have length to beam ratios as high as 30:1, while a cora ... [...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". A merchant vessel has t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whaling Ship
A whaler or whaling ship is a specialized vessel, designed or adapted for whaling: the catching or processing of whales. Terminology The term ''whaler'' is mostly historic. A handful of nations continue with industrial whaling, and one, Japan, still dedicates a single factory ship for the industry. The vessels used by aboriginal whaling communities are much smaller and are used for various purposes over the course of the year. The ''whale catcher'' was developed during the Steam-powered vesselage , and then driven by diesel engines throughout much of the twentieth century. It was designed with a harpoon gun mounted at its bow and was fast enough to chase and catch rorquals such as the fin whale. At first, whale catchers either brought the whales they killed to a whaling station, a settlement ashore where the carcasses could be processed, or to its factory ship anchored in a sheltered bay or inlet. With the later development of the slipway at the ship's stern, whale catcher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Munich Crisis
The Munich Agreement was reached in Munich on 30 September 1938, by Nazi Germany, the United Kingdom, the French Republic, and the Kingdom of Italy. The agreement provided for the German annexation of part of Czechoslovakia called the Sudetenland, where 3 million people, mainly ethnic Germans, lived. The pact is known in some areas as the Munich Betrayal (; ), because of a previous 1924 alliance agreement and a 1925 military pact between France and the Czechoslovak Republic. Germany had started a low-intensity undeclared war on Czechoslovakia on 17 September 1938. In reaction, Britain and France on 20 September formally requested Czechoslovakia cede the Sudetenland territory to Germany. This was followed by Polish and Hungarian territorial demands brought on 21 and 22 September, respectively. Meanwhile, German forces conquered parts of the Cheb District and Jeseník District, where battles included use of German artillery, Czechoslovak tanks, and armored vehicles. Lightly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
