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Iranian High-aspect-ratio Twin-hull Vessels
A high-aspect-ratio twin-hull vessel (acronymed HARTH) refers to a certain design of catamaran vessels with small waterplane area. These vessels are built and used by the Islamic Revolutionary Guard Corps (IRGC) of Iran. Such design is considered relatively rare in military usage. Design The design of vessels is being described as looking "almost like a pond skater" because of the superstructure sitting above tall legs. Due to the large length of the hulls in the water (also known as pontoons) and also the high height of the deck above the surface, it has a high length-to-width ratio (and is thus called high-aspect-ratio). This design enables small speedboats to move under the ship, which can technically make certain tactical scenarios possible. In comparison to a conventional catamaran, HARTH design allows decreasing the drag forces of the hull and thus breaking the seawater during sailing more easily, as well as more transverse stability in harsh sea states as a result of low ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catamaran
A Formula 16 beachable catamaran Powered catamaran passenger ferry at Salem, Massachusetts, United States A catamaran () (informally, a "cat") is a multi-hulled watercraft featuring two parallel hulls of equal size. It is a geometry-stabilized craft, deriving its stability from its wide beam, rather than from a ballasted keel as with a monohull boat. Catamarans typically have less hull volume, smaller displacement, and shallower draft (draught) than monohulls of comparable length. The two hulls combined also often have a smaller hydrodynamic resistance than comparable monohulls, requiring less propulsive power from either sails or motors. The catamaran's wider stance on the water can reduce both heeling and wave-induced motion, as compared with a monohull, and can give reduced wakes. Catamarans were invented by the Austronesian peoples which enabled their expansion to the islands of the Indian and Pacific Oceans. Catamarans range in size from small sailing or rowing ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shahid Soleimani Missile Corvette
''Shahid Soleimani'' (Persian: شهید سلیمانی) is the lead ship of an Iranian class of missile corvettes with the same name. It was built by the Shahid Mahallati Shipyard and is operated by the Islamic Revolutionary Guard Corps Navy of Iran. Design Hull The ship has a catamaran (twin hull) design with sharp angles to give it a more stealthy design. Its design has been compared to the Chinese Type 22 missile boat and the Taiwanese ''Tuo Chiang'' class. According to Iranian officials the ship's hull is made of aluminium instead of steel which decreases the weight and is a new innovation in the Iranian shipbuilding industry. Armament This warship is equipped with six anti-ship cruise missiles including four long-range ones (likely Noor or Ghadir) and two short-range anti-ship missiles (likely Nasir) in an order of two long-range and one short-range box launchers on each side behind the superstructure. It is also the first Iranian warship to be equipped with VLS. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Classes Of The Islamic Revolutionary Guard Corps
A ship is a large watercraft that travels the world's oceans and other sufficiently deep waterways, carrying cargo or passengers, or in support of specialized missions, such as defense, research, and fishing. Ships are generally distinguished from boats, based on size, shape, load capacity, and purpose. Ships have supported exploration, trade, warfare, migration, colonization, and science. After the 15th century, new crops that had come from and to the Americas via the European seafarers significantly contributed to world population growth. Ship transport is responsible for the largest portion of world commerce. The word ''ship'' has meant, depending on the era and the context, either just a large vessel or specifically a ship-rigged sailing ship with three or more masts, each of which is square-rigged. As of 2016, there were more than 49,000 merchant ships, totaling almost 1.8 billion dead weight tons. Of these 28% were oil tankers, 43% were bulk carriers, and 13% were cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
