|
Type 917 Rescue Ship
Type 917 rescue ship (ARS) is a type of rescue and salvage ship developed by China for its People's Liberation Army Navy (PLAN). A total of two ships have entered service by mid-2014, and more units are planned. Type 917 is the first ship in PLAN to adopt a trimaran hull, and hence received NATO reporting name ''Dasan'' class, or 大三 in Chinese, which is short for Da-xing (大型) San-ti-chuan (三体船), meaning Large Trimaran. The advantage of trimaran include stability and high speed in rough seas, and large deck area equivalent to much larger ship, thus enabling small ship to carry helicopter that can only be carried by larger ships in traditional monohull design. Designed by thMultihull Ship Technology National Defense Important Academic Majors Laboratory (多体船技术国防重点学科实验室)of Harbin Engineering University, Type 917 carries a pair of newly designed rescue boat, with one on each side, stored in the davit position. The ship is equipped with a newly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
People's Republic Of China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after India, representing 17.4% of the world population. China spans the equivalent of five time zones and Borders of China, borders fourteen countries by land across an area of nearly , making it the list of countries and dependencies by area, third-largest country by land area. The country is divided into 33 Province-level divisions of China, province-level divisions: 22 provinces of China, provinces, 5 autonomous regions of China, autonomous regions, 4 direct-administered municipalities of China, municipalities, and 2 semi-autonomous special administrative regions. Beijing is the country's capital, while Shanghai is List of cities in China by population, its most populous city by urban area and largest financial center. Considered one of six ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type 922 Rescue And Salvage Ship
Type 922 rescue and salvage ship is a series of rescue and salvage ships developed by China for the People's Liberation Army Navy (PLAN), and after decades of service they still remain active in other Chinese governmental establishments. Type 922 Type 922 is the first model of Type 922 series, and it was converted from a 3400-ton cargo ship transferred from Ministry of Transportation. Order to develop rescue and salvage ship was issued on October 27, 1960 and on July 16, 1962, the design was approved. Construction begun in early 1964 after nearly a year of preparation and in July 1965, the ship was launched. Sea trials were successfully completed on July 27, 1966 and test runs for rescue and salvage operations were completed in November of the same year in . The ship was formally handed to PLAN in December 1966 as Hai-Jiu (海救, meaning Sea Rescue) 403. Type 922II Type 922II is the development resulted from experience gained from the deployment of Type 922II.On May 5, 1970, a de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Propulsion
Marine propulsion is the mechanism or system used to generate thrust to move a watercraft through water. While paddles and sails are still used on some smaller boats, most modern ships are propelled by mechanical systems consisting of an electric motor or internal combustion engine driving a propeller, or less frequently, in pump-jets, an impeller. Marine engineering is the discipline concerned with the engineering design process of marine propulsion systems. Human-powered watercraft, Human-powered paddles and oars, and later, sails were the first forms of marine propulsion. Rowed galleys, some equipped with sail, played an important early role in early human seafaring and naval warfare, warfare. The first advanced mechanical means of marine propulsion was the marine steam engine, introduced in the early 19th century. During the 20th century it was replaced by two-stroke diesel engine, two-stroke or four-stroke diesel engines, outboard motors, and gas turbine engines on faster sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Navigation Radar
Radar navigation is the utilization of marine and aviation radar systems for vessel and aircraft navigation. When a craft is within radar range of land or special radar aids to navigation, the navigator can take distances and angular bearings to charted objects and use these to establish arcs of position and lines of position on a chart.Maloney, 2003:744. A fix consisting of only radar information is called a ''radar fix''.Bowditch, 2002:816. Some types of radar fixes include the relatively self-explanatory methods of "range and bearing to a single object,"National Imagery and Mapping Agency, 2001:163. "two or more bearings," "tangent bearings," and "two or more ranges." Parallel indexing is a technique defined by William Burger in the 1957 book ''The Radar Observer's Handbook''.National Imagery and Mapping Agency, 2001:169. This technique involves creating a line on the screen that is parallel to the ship's course, but offset to the left or right by some distance. This ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rescue And Salvage Ship
Rescue and salvage ships (hull classification symbol ARS) are a type of military salvage tug. They are tasked with coming to the aid of stricken vessels. Their general mission capabilities include combat salvage, lifting, towing, retraction of grounded vessels, off-ship firefighting, and crewed diving operations.navy.mil Military Sealift Command Ship Inventory: Rescue Salvage Ships They were common during World War II. List of rescue and salvage ships of the United States Navy by class The following ship classes have been designated under the ARS hull classification symbol in United States Navy Service.''Lapwing''-class minesweeper conversions The earliest designated United States Navy salvage ships (ARS) were converted s. Ships of this type were operated by the United States Navy as salvage ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
People's Liberation Army Navy
The People's Liberation Army Navy, also known as the People's Navy, PLA Navy or simply Chinese Navy, is the naval warfare military branch, branch of the People's Liberation Army, the national military of the People's Republic of China. It is composed of five sub-branches: the People's Liberation Army Navy Surface Force, Surface Force, the People's Liberation Army Navy Submarine Force, Submarine Force, the People's Liberation Army Navy Coastal Defense Force, Coastal Defense Force, the People's Liberation Army Navy Marine Corps, Marine Corps and the People's Liberation Army Naval Air Force, Naval Air Force, with a total strength of 384,000 personnel, including 55,000 People's Liberation Army Marine Corps, marines and 50,000 naval aviation personnel. The PLAN's combat units are deployed among three theater commands of the People's Liberation Army, theater command naval fleet, fleets, namely the North Sea Fleet, North Sea, East Sea Fleet, East Sea and South Sea Fleet, which serve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trimaran
A trimaran (or double-outrigger) is a multihull boat that comprises a main hull and two smaller outrigger hulls (or "floats") which are attached to the main hull with lateral beams. Most modern trimarans are sailing yachts designed for recreation or racing; others are ferries or warships. They originated from the traditional double-outrigger hulls of the Austronesian cultures of Maritime Southeast Asia; particularly in the Philippines and Eastern Indonesia, where it remains the dominant hull design of traditional fishing boats. Double-outriggers are derived from the older catamaran and single-outrigger boat designs. Terminology The word "trimaran" is a portmanteau of "tri" and "(cata)maran", a term that is thought to have been coined by Victor Tchetchet, a pioneering, Ukrainian-born modern multihull designer. Trimarans consist of a main hull connected to outrigger floats on either side by a crossbeam, wing, or other form of superstructure—the traditional Polynesian te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NATO Reporting Name
NATO uses a system of code names, called reporting names, to denote military aircraft and other equipment used by post-Soviet states, former Warsaw Pact countries, China, and other countries. The system assists military communications by providing short, one- or two-syllable names, as alternatives to the precise proper names, which may be easily confused under operational conditions or are unknown in the Western world. The assignment of reporting names is managed by the Five Eyes Air Force Interoperability Council (AFIC), previously known as the Air Standardization Coordinating Committee (ASCC), which is separate from NATO. Based in Washington DC, AFIC comprises representatives from the militaries of three NATO members (Canada, the United Kingdom and United States) and two non-NATO countries (Australia and New Zealand). When the system was introduced in the 1950s, reporting names also implicitly designated potentially hostile aircraft. However, since the end of the Cold War, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monohull
right A monohull is a type of boat having only one hull, unlike multihulled boats which can have two or more individual hulls connected to one another. Fundamental concept Among the earliest hulls were simple logs, but these were generally unstable and tended to roll over easily. Hollowing out the logs into a dugout canoe doesn't help much unless the hollow section penetrates below the log's center of buoyancy, then a load carried low in the cavity actually stabilizes the craft. Adding weight or ballast to the bottom of the hull or as low as possible within the hull adds stability. Naval architects place the center of gravity substantially below the center of buoyancy; in most cases this can only be achieved by adding weight or ballast. The use of stones and other weights as ballast can be traced back to the Romans, Phoenicians and Vikings. Modern ships carry tons of ballast in order to maintain their stability; even heavily laden cargo ships use ballast to optimize the di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harbin Engineering University
Harbin Engineering University (HRBEU; ) is a public science and engineering university in Harbin, Heilongjiang, China. It is affiliated with the Ministry of Education, and co-funded by the Ministry of Industry and Information Technology, the Ministry of Education, the Heilongjiang Provincial People's Government, the Harbin Municipal People's Government, and the People's Liberation Army Navy. The university is part of the Double First-Class Construction and Project 211. The university was established in 1970 based on the Department of Naval Engineering of the then Chinese People's Liberation Army Military Engineering College. It received the national accreditation to confer master's degrees and doctorates in 1981. The university now offers more than 150 degree programs, among them 48 are conducted in English. History HEU traces its origins to the PLA Military Engineering Institute established in Harbin on September 1, 1953, with technical support from the Soviet Union after t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Davit
Boat suspended from Welin Quadrant davits; the boat is mechanically 'swung out' Gravity multi-pivot on Scandinavia'' file:Bossoir a gravité.jpg, Gravity Roller Davit file:Davits-starbrd.png, Gravity multi-pivot davit holding rescue vessel on a North Sea ferry file:Freefall lifeboat.JPG, Freefall lifeboat on the ''Spring Aeolian'' file:Frapping line.jpg, Frapping line Labeled Tricing Gripe Steps to launch davit Roller Gravity Davit A davit () is any of various crane-like devices used on a ship for supporting, raising, and lowering equipment such as boats and anchors. Davit systems are most often used to lower an emergency lifeboat to the embarkation level to be boarded. The lifeboat davit has falls (now made of wire, historically of manila rope) that are used to lower the lifeboat into the water. Davits can also be used as man-overboard safety devices to retrieve personnel from the water. The maintaining and operation of davits is all under jurisdiction of the Intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Sea Fleet
The Eastern Theater Command Navy (东部战区海军, ETCN) is a formation of China's People's Liberation Army Navy (PLAN) and the naval component of the Eastern Theater Command. The ETCN was reorganized from the East Sea Fleet (ESF) by 2016. Currently Wang Zhongcai is the commander of the ESF and Mei Wen it's political commissar. History The PLAN was formed toward the end of the Chinese Civil War. In March 1949, Zhang Aiping of the Third Field Army was ordered by the Central Military Commission (CMC) of the Chinese Communist Party to create a naval force from the field army. Zhang's only previous naval experience was organizing an irregular riverine force near Hongze Lake in 1941 and leading it in a successful campaign against local bandits. The PLAN was created on 21 April when Zhang established the East China Military Region Navy, or East China Navy (ECN), with a thirteen-member headquarters, and he was formally appointed by the CMC as the ECN's commander and commissar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
