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Cougar-class Speedboat
''Cougar'' is a class of fast patrol boat operated by the Navy of the Islamic Revolutionary Guard Corps of Iran. History The vessel was first commissioned into the fleet in 2007, when at least ten of this class were unveiled. Design According to '' Jane's Fighting Ships'', Iranian ''Cougar''-class vessels are similar to a craft operated by Hong Kong Maritime Police. The source cites the details of the class the same as Hong Kong vessel, while pointing that they may be different. Speculated characteristics The Hongkonger vessels (''Damen Cougartek''-class) are built by Damen, Gorinchem and their full load displacement is . The class design is long, would have a beam of and a draft of . Powered by three Innovation Marine Sledge Hammer engines coupled with three shafts, the nominal power is for a top speed of . Armament Iranian ''Cougar'' vessels are equipped with two 12.7mm machine gun A machine gun is a fully automatic, rifled autoloading firearm designed for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Navy Of The Islamic Revolutionary Guard Corps
The Navy of the Islamic Revolutionary Guard Corps ( fa, نیروی دریایی سپاه پاسداران انقلاب اسلامی, niru-ye daryâyi-e sepâh-e pâsdârân-e enghelâb-e eslâmi; officially abbreviated NEDSA ( fa, ندسا), also known as the Sepah Navy and by the English acronym IRGCN) is the naval warfare service of the Islamic Revolutionary Guard Corps founded in 1985, and one of the two maritime forces of Iran, parallel to the conventional Islamic Republic of Iran Navy. The IRGC has been designated as a terrorist organization by the governments of Bahrain, Saudi Arabia and the United States. IRGC's Navy has steadily improved its capabilities to support unconventional warfare and defend Iran's offshore facilities, coastlines, and islands in the Persian Gulf. Name The forces are known with their official abbreviation in Persian, "NEDSA". In maritime radio communications, it is addressed as "Sepah Navy". History Iran–Iraq War (1985–1988) On 17 Septemb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patrol Boat
A patrol boat (also referred to as a patrol craft, patrol ship, or patrol vessel) is a relatively small naval vessel generally designed for coastal defence, border security, or law enforcement. There are many designs for patrol boats, and they generally range in size. They may be operated by a nation's navy, coast guard, police, or customs, and may be intended for marine (" blue water"), estuarine ("green water"), or river (" brown water") environments. Per their name, patrol boats are primarily used to patrol a country's exclusive economic zone (EEZ), but they may also be used in other roles, such as anti-smuggling, anti-piracy, fishery patrols, immigration law enforcement, or search and rescue. Depending on the size, organization, and capabilities of a nation's armed forces, the importance of patrol boats may range from minor support vessels that are part of a coast guard, to flagships that make up a majority of a navy's fleet. Their small size and relatively low cost make ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Engine
The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-called compression-ignition engine (CI engine). This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine (gasoline engine) or a gas engine (using a gaseous fuel like natural gas or liquefied petroleum gas). Diesel engines work by compressing only air, or air plus residual combustion gases from the exhaust (known as exhaust gas recirculation (EGR)). Air is inducted into the chamber during the intake stroke, and compressed during the compression stroke. This increases the air temperature inside the cylinder to such a high degree that atomised diesel fuel injected into the combustion chamber ignites. With the fuel being injected into the air just before combustion, the dispersion of the fuel is une ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Class
A ship class is a group of ships of a similar design. This is distinct from a ship type, which might reflect a similarity of tonnage or intended use. For example, is a nuclear aircraft carrier (ship type) of the (ship class). In the course of building a class of ships, design changes might be implemented. In such a case, the ships of different design might not be considered of the same class; each variation would either be its own class, or a subclass of the original class (see for an example). If ships are built of a class whose production had been discontinued, a similar distinction might be made. Ships in a class often have names linked by a common factor: e.g. s' names all begin with T (, , ); and s are named after American battles (, , , ). Ships of the same class may be referred to as sister ships. Naval ship class naming conventions Overview The name of a naval ship class is most commonly the name of the lead ship, the first ship commissioned or built of its design. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patrol Boat
A patrol boat (also referred to as a patrol craft, patrol ship, or patrol vessel) is a relatively small naval vessel generally designed for coastal defence, border security, or law enforcement. There are many designs for patrol boats, and they generally range in size. They may be operated by a nation's navy, coast guard, police, or customs, and may be intended for marine (" blue water"), estuarine ("green water"), or river (" brown water") environments. Per their name, patrol boats are primarily used to patrol a country's exclusive economic zone (EEZ), but they may also be used in other roles, such as anti-smuggling, anti-piracy, fishery patrols, immigration law enforcement, or search and rescue. Depending on the size, organization, and capabilities of a nation's armed forces, the importance of patrol boats may range from minor support vessels that are part of a coast guard, to flagships that make up a majority of a navy's fleet. Their small size and relatively low cost make ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iran
Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmenistan to the north, by Afghanistan and Pakistan to the east, and by the Gulf of Oman and the Persian Gulf to the south. It covers an area of , making it the 17th-largest country. Iran has a population of 86 million, making it the 17th-most populous country in the world, and the second-largest in the Middle East. Its largest cities, in descending order, are the capital Tehran, Mashhad, Isfahan, Karaj, Shiraz, and Tabriz. The country is home to one of the world's oldest civilizations, beginning with the formation of the Elamite kingdoms in the fourth millennium BC. It was first unified by the Medes, an ancient Iranian people, in the seventh century BC, and reached its territorial height in the sixth century BC, when Cyrus the Great fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jane's Fighting Ships
''Jane's Fighting Ships'' by Janes Information Services is an annual reference book of information on all the world's warships arranged by nation, including information on ships' names, dimensions, armaments, silhouettes and photographs, etc. Each edition describes and illustrates warships of different national naval and paramilitary forces, providing data on their characteristics. The first issue was illustrated with Jane's own ink sketches--photos began to appear with the third volume in 1900. The present title was adopted in 1905. It was originally published by Fred T. Jane in London in 1898 as ''Jane's All the World's Fighting Ships'', in order to assist naval officers and the general public in playing naval wargames. Its success eventually launched a number of military publications carrying the name "Jane's". It is a unit of Jane's Information Group, which is now owned by IHS. Ten early editions of Jane's (those of 1898, 1905-06, 1906-07, 1914, 1919, 1924, 1931, 1939, 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Region
The Marine Region is a branch of the Hong Kong Police Force, more widely known as the Marine Police. The marine police patrol of waters within the territory of Hong Kong, including 263 islands. The Marine Region with about 3,000 officers, and a fleet of 142 in total, made up of 70 launches and 72 craft is the largest of any civil police force. Overview The Marine Region involves about 3,000 officers policing some 13,000 local craft and a total maritime population of 14,100. In addition to normal marine policing functions, the marine police are also responsible for countering illegal immigration and smuggling at sea. To undertake this work, the Marine Region additionally mount shore patrol to police the smaller islands and isolated communities with no land transport to other parts of the territory, and participate in the Hong Kong Maritime Rescue Co-ordination Centre, which is responsible for co-ordinating maritime rescue operations both within and outside Hong Kong waters. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Damen Group
The Damen Group is a Dutch defence, shipbuilding, and engineering conglomerate company based in Gorinchem, Netherlands. Though it is a major international group doing business in 120 countries, it remains a private family-owned company. Damen Shipyards Group is a globally operating company with more than 50 shipyards, repair yards, and related companies − as well as numerous partner yards that can build Damen vessels locally. Since 1969 it has designed and built more than 5,000 vessels and delivers over 150 vessels annually. With over 30 shipyards and related companies worldwide, Damen is involved in ship construction as well as maintenance and repair activities. It has a wide product range, including tugs, workboats, patrol craft, cargo vessels, dredgers, superyachts and fast ferries. Product design and engineering are carried out in-house and a broad range of designs are available. History Overview Damen was established in 1927 in the town of Hardinxveld-Giessendam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Full Load Displacement
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" (or "load lines"). A mer ... [...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 extremities 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 cor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draft (hull)
The draft or draught of a ship's hull is the vertical distance between the waterline and the bottom of the hull (keel). The draught of the vessel is the maximum depth of any part of the vessel, including appendages such as rudders, propellers and drop keels if deployed. Draft determines the minimum depth of water a ship or boat can safely navigate. The related term air draft is the maximum height of any part of the vessel above the water. The more heavily a vessel is loaded, the deeper it sinks into the water, and the greater its draft. After construction, the shipyard creates a table showing how much water the vessel displaces based on its draft and the density of the water (salt or fresh). The draft can also be used to determine the weight of cargo on board by calculating the total displacement of water, accounting for the content of the ship's bunkers, and using Archimedes' principle. The closely related term "trim" is defined as the difference between the forward and aft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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