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Rizal-class Corvette
The ''Rizal'' class was a ship class of two patrol corvettes formerly operated by the Philippine Navy. These ships were formerly used by the US Navy as ''Auk'' class minesweepers. Under the Philippine Navy, the two vessels have undergone upgrades and modification, and were categorized as corvettes. Both ships have been retired from service by the Philippine Navy. History The ''Auk'' class of naval ships were Allied minesweepers serving with the United States Navy and the British Royal Navy during the Second World War. In total, there were a recorded 95 ''Auk'' class minesweepers under Allied command during that time. Thirty-two minesweepers were ordered by the US (as BAM-1 to 32) intending them to be supplied to the Royal Navy under Lend-lease but 12 were retained for USN use and given names and "AM" hull classification prefix. Those transferred were given "J" pennant number prefixes and formed the ''Catherine'' class Eleven minesweepers of the ''Auk'' class were lost in Worl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Associated Shipbuilding Corp
Associated may refer to: *Associated, former name of Avon, Contra Costa County, California *Associated Hebrew Schools of Toronto, a school in Canada *Associated Newspapers, former name of DMG Media, a British publishing company See also *Association (other) *Associate (other) * {{dab ... [...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 Kingdom of England, English and Kingdom of Scotland, Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against Kingdom of France, France. The modern Royal Navy traces its origins to the early 16th century; the oldest of the British Armed Forces, 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 World War II, 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propeller
A propeller (colloquially 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 specially 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 with an approximately horizontal axis. History Early developments The principle employed in using a screw propeller is derived from sculling. In sculling, a single blade is moved through an arc, from side to side taking care to keep presenting the blade to the water at t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electro-Motive Diesel
Progress Rail Locomotives, doing business as Electro-Motive Diesel (EMD), is an American manufacturer of diesel-electric locomotives, locomotive products and diesel engines for the rail industry. The company is owned by Caterpillar through its subsidiary Progress Rail. Electro-Motive Diesel traces its roots to the Electro-Motive Engineering Corporation, a designer and marketer of gasoline-electric self-propelled rail cars founded in 1922 and later renamed Electro-Motive Company (EMC). In 1930, General Motors purchased Electro-Motive Company and the Winton Engine Co., and in 1941 it expanded EMC's realm to locomotive engine manufacturing as Electro-Motive Division (EMD). In 2005, GM sold EMD to Greenbriar Equity Group and Berkshire Partners, which formed Electro-Motive Diesel to facilitate the purchase. In 2010, Progress Rail completed the purchase of Electro-Motive Diesel from Greenbriar, Berkshire, and others. EMD's headquarters, engineering facilities and parts manufact ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oerlikon Contraves
Rheinmetall Air Defence AG is a division of German armament manufacturer Rheinmetall, created when the company's Oerlikon Contraves unit was renamed on 1 January 2009 and integrated with Rheinmetall's other air-defence products. Oerlikon Contraves was a Swiss anti-aircraft artillery manufacturer famous for its adaptation of the 1916 20 mm Becker as the Oerlikon 20 mm autocannon design, which was used in the Second World War and still in use today. Copies and derivatives of these designs were made by German, French, British and Japanese weapon manufacturers. Oerlikon Contraves was purchased by Rheinmetall in 1999. , Rheinmetall Air Defence had around 1,050 employees at locations in Switzerland, Germany, Italy and Canada. The group's sales were about . History Oerlikon's earliest predecessor was Schweizerische Werkzeugmaschinenfabrik Oerlikon, founded in the Oerlikon district of Zurich, Switzerland in 1906. In 1923 it acquired a factory in Germany. It entered the anti-air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BRP Quezon (PS-70)
The BRP ''Quezon'' (PS-70) was one of two ''Rizal'' class ships in service with the Philippine Navy. She was formerly a USN ''Auk'' class minesweeper produced during World War II, and was later on classified as a patrol corvette protecting the vast waters of the Philippines. Along with other ex-World War II veteran ships of the Philippine Navy, she was considered one of the oldest active fighting ships in the world, up until its decommissioning on 1 March 2021 after serving a total of 77 years, of which 53 years were with the Philippine Navy. History was originally laid down for the Royal Navy under the lend-lease program as HMS Exploit (BAM-24). However the United States Navy decided to keep the ship and renamed her Vigilance (AM-324) on 23 January 1943. Commissioned in the US Navy in 1944, her first duties included screening of transport convoys between Pearl Harbor and the Marshall Islands and local escort duties between Guam, Peleliu, and Ulithiat. She also did minesweepi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Vigilance (AM-324)
USS ''Vigilance'' (AM-324) was an acquired by the United States Navy for the dangerous task of removing mines from minefields laid in the water to prevent ships from passing. ''Vigilance'' was originally laid down for the ''Royal Navy'' under the lend-lease program as HMS ''Exploit'' (BAM-24) on 28 November 1942 at Seattle, Washington, by Associated Shipbuilders. However, the United States Navy decided to keep the ship and renamed her USS ''Vigilance (AM-324)'' on 23 January 1943. Launched on 5 April 1943, the minesweeper was commissioned at her builder's yard on 28 February 1944. After fitting-out, radio direction finder calibration, sea trials, and minesweeping indoctrination, ''Vigilance'' departed Seattle, Washington on 21 March, bound for southern California for type training, shakedown, and training in anti-submarine warfare (ASW) tactics. World War II Pacific operations Escorting and '' PCS-1W'', the new minesweeper departed San Diego, California on 4 May, bound for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BRP Rizal (PS-74)
The BRP ''Rizal'' (PS-74) was the lead ship and first of two ''Rizal'' class ships in service with the Philippine Navy. She was an ex-USN ''Auk'' class minesweeper that was produced during World War II, and was classified as a patrol corvette protecting the vast waters of the Philippines. Along with other ex-World War II veteran ships of the Philippine Navy, she was considered one of the oldest active fighting ships in the world, until 2020. History US Navy (1945-1965) was commissioned with the US Navy in 1945, her duty was to sweep mines along the Japanese and Korean waters from January to April 1946. She was decommissioned in 1948 and was placed with the Pacific Reserve Fleet.NavSource Online: Mine Warfare Vessel Photo ArchivUSS Murrelet (MSF 372). She was again recommissioned in 1950. She arrived Yokosuka, Japan, in August 1951 to aid United Nations forces opposing Communist aggression. Departing Yokosuka 21 August, she sailed to Korea, participating in operations nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Murrelet (AM-372)
USS ''Murrelet'' (AM-372) was an acquired by the United States Navy to remove mines from minefields laid to prevent ships from passing. She was the only U.S. Navy ship named for the murrelet, a small sea bird found chiefly on islands in the northern Pacific Ocean. ''Murrelet'' was laid down 29 August 1944 by the Savannah Machine & Foundry Co., Savannah, Georgia; launched 29 December 1944; sponsored by Mrs. W. L. Mingledorff; and commissioned 21 August 1945. Service history Post-World War II operations Following shakedown off Virginia, ''Murrelet'' departed Little Creek, Virginia, and steamed for Japan, arriving Sasebo on 14 January 1946. She engaged in sweeping operations in Japanese and Korean waters until 22 April, when she steamed for the west coast. ''Murrelet'' was decommissioned on 20 June 1946, and entered the Pacific Reserve Fleet at San Diego. Korean War After hostilities broke out in Korea, ''Murrelet'' recommissioned 28 October 1950. She reported to COMINR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philippines
The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republika sang Filipinas * ibg, Republika nat Filipinas * ilo, Republika ti Filipinas * ivv, Republika nu Filipinas * pam, Republika ning Filipinas * krj, Republika kang Pilipinas * mdh, Republika nu Pilipinas * mrw, Republika a Pilipinas * pag, Republika na Filipinas * xsb, Republika nin Pilipinas * sgd, Republika nan Pilipinas * tgl, Republika ng Pilipinas * tsg, Republika sin Pilipinas * war, Republika han Pilipinas * yka, Republika si Pilipinas In the recognized optional languages of the Philippines: * es, República de las Filipinas * ar, جمهورية الفلبين, Jumhūriyyat al-Filibbīn is an archipelagic state, archipelagic country in Southeast Asia. It is situated in the western Pacific Ocean and consists of aro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minesweeper (ship)
A minesweeper is a small warship designed to remove or detonate naval mines. Using various mechanisms intended to counter the threat posed by naval mines, minesweepers keep waterways clear for safe shipping. History The earliest known usage of the naval mine dates to the Ming dynasty.Needham, Volume 5, Part 7, 203–205. Dedicated minesweepers, however, only appeared many centuries later during the Crimean War, where they were deployed by the British. The Crimean War minesweepers were rowboats trailing grapnels to snag mines. Minesweeping technology picked up in the Russo-Japanese War, using aging torpedo boats as minesweepers. In Britain, naval leaders recognized before the outbreak of World War I that the development of sea mines was a threat to the nation's shipping and began efforts to counter the threat. Sir Arthur Wilson noted the real threat of the time was blockade aided by mines and not invasion. The function of the fishing fleet's trawlers with their trawl gear was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Savannah Machine And Foundry Co
A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of grasses. According to '' Britannica'', there exists four savanna forms; ''savanna woodland'' where trees and shrubs form a light canopy, ''tree savanna'' with scattered trees and shrubs, ''shrub savanna'' with distributed shrubs, and ''grass savanna'' where trees and shrubs are mostly nonexistent.Smith, Jeremy M.B.. "savanna". Encyclopedia Britannica, 5 Sep. 2016, https://www.britannica.com/science/savanna/Environment. Accessed 17 September 2022. Savannas maintain an open canopy despite a high tree density. It is often believed that savannas feature widely spaced, scattered trees. However, in many savannas, tree densities are higher and trees are more regularly spaced than in for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
