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Moroccan Frigate Hassan II
''Hassan II'' (612) ( ar, الحسن الثاني) is a of the Royal Moroccan Navy. The ship was the first to be constructed for Morocco by Chantiers de l'Atlantique at Saint-Nazaire, France, from 1999 to 2002. The frigate entered service in 2002. ''Hassan II'' is the second of two ''Floréal''-class frigates in Moroccan service, the other being . Design and description The s were designed in response to a demand for a cheap warship capable of operating in low threat areas and able to perform general patrol functions. As a result, the ''Floréal'' class were constructed to mercantile standards in the areas of ammunition stowage, helicopter facilities and damage control, which significantly lowered the cost of the vessels. The ''Floréal'' class were designed for using modular construction which shortened their building times. The Moroccan frigates of the class are similar to those in French service with a few changes. ''Hassan II'' has a standard displacement of and at full loa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hassan II Of Morocco
Hassan II ( ar, الحسن الثاني, translit=al-Ḥasan aṯ-ṯhānī;), with the prefix "Mulay" before his enthronement 9 July 1929 – 23 July 1999) was the King of Morocco from 1961 until his death in 1999. He was a member of the 'Alawi dynasty. He was the eldest son of Sultan Mohammed V, and his second wife, Lalla Abla bint Tahar. He was the first commander-in-chief of the Royal Armed Forces and was named crown prince in 1957. He was enthroned as king in 1961 following his father's death. Hassan's reign was marked by the start of the Western Sahara conflict and the Sand War. He was also the target of two failed coup d'états that were opposed to the absolute monarchy in Morocco: one in 1971 and the other in 1972. Hassan's conservative rule reportedly strengthened the 'Alawi dynasty's rule over Morocco and Western Sahara. He was accused of authoritarian practices and civil rights abuses, particularly during the Years of Lead. A truth commission was set up after h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combined Diesel And Diesel
Combined diesel and diesel (CODAD) is a propulsion system for ships using two diesel engines to power a single propeller shaft. A gearbox and clutch A clutch is a mechanical device that engages and disengages power transmission, especially from a drive shaft to a driven shaft. In the simplest application, clutches connect and disconnect two rotating shafts (drive shafts or line shafts). ...es enable either of the engines or both of them together to drive the shaft. Two advantages over simply using a single, larger diesel engine of the same total power output are that (1) diesel engines have somewhat better specific fuel consumption at 75% to 85% max output than they do at only 50% output, and (2) there is a weight and size advantage to using two higher-speed engines compared to a single lower-speed engine, even with the slightly larger gearbox system. CODAD vessels * Guaicamacuto-class patrol boat * Type 31 frigate * Steregushchiy-class corvette * Jose Rizal- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keel
The keel is the bottom-most longitudinal structural element on a vessel. On some sailboats, it may have a hydrodynamic and counterbalancing purpose, as well. As the laying down of the keel is the initial step in the construction of a ship, in British and American shipbuilding traditions the construction is dated from this event. Etymology The word "keel" comes from Old English , Old Norse , = "ship" or "keel". It has the distinction of being regarded by some scholars as the first word in the English language recorded in writing, having been recorded by Gildas in his 6th century Latin work '' De Excidio et Conquestu Britanniae'', under the spelling ''cyulae'' (he was referring to the three ships that the Saxons first arrived in). is the Latin word for "keel" and is the origin of the term careen (to clean a keel and the hull in general, often by rolling the ship on its side). An example of this use is Careening Cove, a suburb of Sydney, Australia, where careening was carried ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurocopter AS332 Super Puma
The Airbus Helicopters H215 (formerly Eurocopter AS332 Super Puma) is a four-bladed, twin-engine, medium-size utility helicopter developed and initially produced by the French aerospace company Aérospatiale. It has been subsequently manufactured by the successor companies Eurocopter and Airbus Helicopters. The Super Puma is a re-engined and more voluminous version of the original Aérospatiale SA 330 Puma. Development of the Super Puma was carried out during the 1970s, based on the successful SA 330 Puma. While retaining a similar layout, the fuselage was redesigned to increase its damage tolerance and crashworthiness, while composite materials were also more extensively used. Furthermore, a pair of more powerful Turbomeca Makila turboshaft engines were also adopted along with a more streamlined nose, amongst other changes. Two distinct fuselage lengths, a shortened and stretched form, were developed from the onset. On 5 September 1977, the ''SA 331'' pre-production prototyp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea State
In oceanography, sea state is the general condition of the free surface on a large body of water—with respect to wind waves and swell—at a certain location and moment. A sea state is characterized by statistics, including the wave height, period, and spectrum. The sea state varies with time, as the wind and swell conditions change. The sea state can be assessed either by an experienced observer (like a trained mariner) or by using instruments like weather buoys, wave radar or remote sensing satellites. In the case of buoy measurements, the statistics are determined for a time interval in which the sea state can be considered to be constant. This duration has to be much longer than the individual wave period, but shorter than the period in which the wind and swell conditions can be expected to vary significantly. Typically, records of one hundred to one thousand wave periods are used to determine the wave statistics. The large number of variables involved in creating a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurocopter AS565 Panther
The Eurocopter (now Airbus Helicopters) AS565 Panther is the military version of the Eurocopter AS365 Dauphin medium-weight multi-purpose twin-engine helicopter. The Panther is used for a wide range of military roles, including combat assault, fire support, anti-submarine warfare, anti-surface warfare, search and rescue, and medical evacuation. Development During the 1980s, French aerospace firm Aerospatiale decided to develop a purpose-built military version of their popular Eurocopter AS365 Dauphin. The civil SA365 N variant of the Dauphin was used as the starting point for the project; the new rotorcraft was designed to perform utility, anti-tank, troop-transport, and maritime operations. On 28 February 1984, the military variant prototype, designated as the AS365M and later named Panther, conducted its first flight. A total of three prototypes were built. In May 1986, Aerospatiale formally launched production of the AS365M, at which point the firm anticipated more than 400 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface-to-air Missile
A surface-to-air missile (SAM), also known as a ground-to-air missile (GTAM) or surface-to-air guided weapon (SAGW), is a missile designed to be launched from the ground to destroy aircraft or other missiles. It is one type of anti-aircraft system; in modern armed forces, missiles have replaced most other forms of dedicated anti-aircraft weapons, with anti-aircraft guns pushed into specialized roles. The first attempt at SAM development took place during World War II, but no operational systems were introduced. Further development in the 1940s and 1950s led to operational systems being introduced by most major forces during the second half of the 1950s. Smaller systems, suitable for close-range work, evolved through the 1960s and 1970s, to modern systems that are man-portable. Shipborne systems followed the evolution of land-based models, starting with long-range weapons and steadily evolving toward smaller designs to provide a layered defence. This evolution of design increasin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mistral (missile)
The Missile Transportable Anti-aérien Léger (English: Transportable lightweight anti-air missile), commonly called Mistral, is a French infrared homing short range air defense system manufactured by MBDA France (formerly by Matra Defence and then Matra BAe Dynamics). Based on the French SATCP (''Sol-Air à Très Courte Portée''), the portable missile later to become the Mistral began development in 1974. It was initially deployed in 1988 for the first version (S1), 1997 for the second version (M2), and 2019 for the third version (M3). Description Mistral is a short-range air defence (SHORAD) missile system that can be used from vehicles, surface ships, and helicopters, as well as in a portable configuration. When used in the MANPADS role the "Mistral" missile is transported in a transport and launch container (MPC) together with "friend or foe" interrogator, power source and tripod with its sighting devices. They are then to be operated by a pair of crew as commander an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
20 Mm Modèle F2 Gun
The 20 mm modèle F2 gun is a naval defence weapon used by the French Navy. It was developed from the GIAT M693, itself derived from Hispano-Suiza HS.820. It fires the same 20×139 mm round. History The need for a newer 20 mm defence cannon than the Oerlikon 20 mm cannon began to grow noticeably during the 1980s. The companies DCN and GIAT were contracted to design the F2 20 mm cannon, essentially a navalised version of the M693 gun used by the French Army, and sold for export. Description The 20 mm F2 is a mounted monotube gun, with two 150-cartridge boxes on each side of the piece. An electrical control system allows for a choice of three modes of fire: single shot, eight-shot burst, or free fire. There is an electrical trigger in the right hand of the gunner. A manual selector allows the gunner to change the box feeding the weapon during the firing, making mixed firing available. After each shot, the empty cartridge is ejected from beneath the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superstructure
A superstructure is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships. Aboard ships and large boats On water craft, the superstructure consists of the parts of the ship or a boat, including sailboats, fishing boats, passenger ships, and submarines, that project above her main deck. This does not usually include its masts or any armament turrets. Note that in modern times, turrets do not always carry naval artillery, but they can also carry missile launchers and/or antisubmarine warfare weapons. The size of a watercraft's superstructure can have many implications in the performance of ships and boats, since these structures can alter their structural rigidity, their displacements, and/or stability. These can be detrimental to any vessel's performance if they are taken into consideration incorrectly. The height and the weight of superstructure on board a ship or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface-to-surface Missile
A surface-to-surface missile (SSM) or ground-to-ground missile (GGM) is a missile designed to be launched from the ground or the sea and strike targets on land or at sea. They may be fired from hand-held or vehicle mounted devices, from fixed installations, or from a ship. They are often powered by a rocket engine or sometimes fired by an explosive charge, since the launching platform is typically stationary or moving slowly. They usually have fins and/or wings for lift and stability, although hyper-velocity or short-ranged missiles may use body lift or fly a ballistic trajectory. The V-1 flying bomb was the first operational surface-to-surface missile. Contemporary surface-to-surface missiles are usually guided. An unguided surface-to-surface missile is usually referred to as a rocket (for example, an RPG-7 or M72 LAW is an anti-tank rocket whereas a BGM-71 TOW or AT-2 Swatter is an anti-tank guided missile). Examples of surface-to-surface missile include the MGM-140 ATA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aviation Fuel
Aviation fuels are petroleum-based fuels, or petroleum and synthetic fuel blends, used to power aircraft. They have more stringent requirements than fuels used for ground use, such as heating and road transport, and contain additives to enhance or maintain properties important to fuel performance or handling. They are kerosene-based (JP-8 and Jet A-1) for gas turbine-powered aircraft. Piston-engined aircraft use leaded gasoline and those with diesel engines may use jet fuel (kerosene). By 2012, all aircraft operated by the United States Air Force, U.S. Air Force had been certified to use a 50-50 blend of kerosene and synthetic fuel derived from coal or natural gas as a way of stabilizing the cost of fuel. Specific energy (energy per unit mass) is an important criterion in selecting fuel for an aircraft. The much higher energy storage capability of hydrocarbon fuels compared to batteries has so far prevented electric aircraft using electric batteries as the main propulsion energy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
