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Samar-class Offshore Patrol Vessel
''Samar'' class of offshore patrol vessels are series of five ships built by Goa Shipyard Limited, Vasco da Gama, Goa for the Indian Coast Guard. Design and description The construction of vessels was ordered in April 1990 and these ships are half-sisters to seven units in the Indian Navy. A total of twelve were originally planned and then cut to six. The vessels are intended for offshore patrol duties for the protection of oil platforms and the Indian exclusive economic zone. The vessels in this class are long with a beam of . They are powered by two Kirloskar-SEMT-Pielstick diesel engines () driving two propellers and have a range at a cruising speed of . The ''Samar''-class ships feature an Integrated Bridge System (IBS), Integrated Machinery Control System (IMCS), high power External Fire Fighting System, two Indian-built 30 mm gun mounts and one 76 mm OTO Melara dual-purpose gun. Besides, the ships are provided with a BEL-made onboard day/night infrared surveillanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goa Shipyard Limited
Goa Shipyard Limited (GSL) is an Indian Government owned ship building company located on the West Coast of India at Vasco da Gama, Goa. It was established in 1957, originally by the colonial government of the Portuguese in India as the "Estaleiros Navais de Goa", to build barges to be used in Goa's growing mining industry, which took off after the establishment of India's blockade of Goa in 1955. In the wake of Portugal's defeat and unconditional surrender to India following the 1961 Indian annexation of Goa The Annexation of Goa was the process in which the Republic of India annexed ', the then Portuguese Indian territories of Goa, Daman and Diu, starting with the armed action carried out by the Indian Armed Forces in December 1961. In India ..., it was requisitioned to manufacture warships for the Indian Navy and the Indian Coast Guard. GSL is undergoing a modernisation of its yard to adapt to the latest technology in shipbuilding. To this purpose it is negotiating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goa Shipyard
Goa Shipyard Limited (GSL) is an Government of India, Indian Government owned ship building company located on the West Coast of India at Vasco da Gama, Goa. It was established in 1957, originally by the colonial government of the Portuguese in India as the "Estaleiros Navais de Goa", to build barges to be used in Goa's growing mining industry, which took off after the establishment of India's blockade of Goa in 1955. In the wake of Portugal's defeat and unconditional surrender to India following the 1961 Indian annexation of Goa, it was requisitioned to manufacture warships for the Indian Navy and the Indian Coast Guard. GSL is undergoing a modernisation of its yard to adapt to the latest technology in shipbuilding. To this purpose it is negotiating with well-known shipbuilders for an arrangement to collaborate. To date it has built 167 vessels, including barges, tugs, landing craft, offshore patrol vessels and other vessels for the Indian Navy and Coast Guard and for export to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar Cross-section
Radar cross-section (RCS), also called radar signature, is a measure of how detectable an object is by radar. A larger RCS indicates that an object is more easily detected. An object reflects a limited amount of radar energy back to the source. The factors that influence this include: *the material with which the target is made; *the size of the target relative to the wavelength of the illuminating radar signal; *the absolute size of the target; *the incident angle (angle at which the radar beam hits a particular portion of the target, which depends upon the shape of the target and its orientation to the radar source); *the reflected angle (angle at which the reflected beam leaves the part of the target hit; it depends upon incident angle); *the polarization of the transmitted and the received radiation with respect to the orientation of the target. While important in detecting targets, strength of emitter and distance are not factors that affect the calculation of an RCS becaus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bharat Electronics
Bharat Electronics Limited (BEL) is an Indian Government-owned aerospace and defence electronics company. It primarily manufactures advanced electronic products for ground and aerospace applications. BEL is one of nine PSUs under the Ministry of Defence of India. It has been granted '' Navratna'' status by the Government of India. History of BEL Bharat Electronics Limited was founded in Bangalore, Karnataka, India in 1954. Starting with the manufacture of a few communication equipment in 1956, BEL started producing receiving valves in 1961, germanium semiconductors in 1962, and radio transmitters for AIR in 1964 with help from the Soviet Union. * In 1966, BEL set up a radar manufacturing facility for the army and in-house R&D. In 1967, BEL began manufacturing transmitting tubes, silicon devices and integrated circuits. The PCB manufacturing facility was established in 1968. * In 1970, BEL started making black & white TV picture tubes, X-ray tubes and microwave tubes. In 1971, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dual-purpose Gun
A dual-purpose gun is a naval artillery mounting designed to engage both surface and air targets. Description Second World War-era capital ships had four classes of artillery: the heavy main battery, intended to engage opposing battleships and cruisers of 305 mm to 457 mm (12 inch to 18 inch); a secondary battery for use against enemy destroyers of 152 mm to 203 mm (6 inch to 8 inch); heavy anti-aircraft guns of 76 mm to 127 mm (3 inch to 5 inch), which could create barrages to knock out airplanes at a distance; finally, light rapid-fire anti-aircraft batteries (A/A) to track and bring down aircraft at close range. The light A/A was dispersed throughout the ship and included both automatic cannons of 20 mm to 40 mm (.787 inch to 1.57 inch) and heavy machine guns of 12.7 mm to 14.5 mm (.50 inch to .58 inch). During World War II, the US Navy, Royal Navy, the French Navy, and the Imperial Japanese Navy combined the secondary battery with the heavy anti-aircraft guns, creating a d ... [...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] |
Indian Navy
The Indian Navy is the maritime branch of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Navy. The Chief of Naval Staff, a four-star admiral, commands the navy. As a blue-water navy, it operates significantly in the Persian Gulf Region, the Horn of Africa, the Strait of Malacca, and routinely conducts anti-piracy operations and partners with other navies in the region. It also conducts routine two to three month-long deployments in the South and East China seas as well as the western Mediterranean sea simultaneously. The primary objective of the navy is to safeguard the nation's maritime borders, and in conjunction with other Armed Forces of the union, act to deter or defeat any threats or aggression against the territory, people or maritime interests of India, both in war and peace. Through joint exercises, goodwill visits and humanitarian missions, including disaster relief, the Indian Navy promotes bilateral relations between n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Coast Guard
The Indian Coast Guard (ICG) is a maritime law enforcement and search and rescue agency of India with jurisdiction over its territorial waters including its contiguous zone and exclusive economic zone. The Indian Coast Guard was formally established on 1 February 1977 by the ''Coast Guard Act, 1978'' of the Parliament of India. It operates under the Ministry of Defence. The Coast Guard works in close cooperation with the Indian Navy, the Department of Fisheries, the Department of Revenue (Customs), and the Central Armed Police Forces, and the State Police Services. History The establishment of the Indian Coast Guard was first proposed by the Indian Navy to provide non-military maritime services to the nation. In the 1960s, sea-borne smuggling of goods was threatening India's domestic economy. The Indian Customs Department frequently called upon the Indian Navy for assistance with patrol and interception in the anti-smuggling effort. The Nagchaudhuri Committee was constit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vasco Da Gama, Goa
Vasco da Gama (), often shortened to Vasco, is a city in the state of Goa on the west coast of India. It is named after the Portuguese explorer Vasco da Gama. It is the headquarters of the Mormugão taluka (subdistrict). The city lies on the western tip of the Mormugao peninsula, at the mouth of the Zuari River, about from Panaji, Goa's capital, from Margao, the district headquarters and about from Dabolim Airport. The city was founded in 1543 and remained in Portuguese hands until 1961, when Goa ceased to be a Portuguese territory. The 1888-constructed Mormugao Port remains a busy shipping route in Asia. It is one of the major ports of independent India. The shipbuilding area of Goa Shipyard Limited that builds Indian Navy and Coast Guard vessels was also built there in 1957 (during the Portuguese era). Initially built around the city's harbour as the 'Estaleiros Navais de Goa', the area has, since the end of Portuguese presence, expanded into construction for several other ... [...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] |
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