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Delta-class Submarine
The Delta class, (Russian language, Russian: Дельта) List of ships of Russia by project number, Soviet designations Project 667B ''Murena'', Project 667BD ''Murena-M'', Project 667BDR ''Kalmar'', Project 667BDRM ''Delfin'', (List of NATO reporting names for submarines, NATO reporting names Delta I, Delta II, Delta III, Delta IV respectively) are a family of Nuclear submarine, nuclear-powered ballistic missile submarines, designed and built in the Soviet Union, which formed the backbone of the Soviet and Russian strategic submarine fleet since their introduction in 1973. They carry nuclear ballistic missiles of the R-29 Vysota family, with the Delta I, Delta II, Delta III and Delta IV classes carrying the R-29/R-29 Vysota, SS-N-8 'Sawfly', R-29D/SS-N-8 'Sawfly', R-29R/R-29 Vysota, SS-N-18 'Stingray' and R-29RM Shtil, R-29RM/SS-N-23 'Skiff' (and later on R-29RMU Sineva, improved R-29RMU2 Layner, versions) respectively. The Soviets viewed the Deltas as an iterative improveme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Delta IV Class
A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.) The term "submarine" is also sometimes used historically or informally to refer to remotely operated vehicles and robots, or to medium-sized or smaller vessels (such as the midget submarine and the wet sub). Submarines are referred to as ''boats'' rather than ''ships'' regardless of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and submarines were adopted by several navies. They were first used widely during World War I (1914–1918), and are now used in many navy, navies, large and small. Their military uses include: attacking enemy surface ships (merchant and military) or other submarines; aircraft carrier protection; Blockade runner, blockade running; Ballistic missile submarine, nuclear deterrence; stealth operations in denied ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second Strike
In nuclear strategy, a retaliatory strike or second-strike capability is a country's assured ability to respond to a nuclear attack with powerful nuclear retaliation against the attacker. To have such an ability (and to convince an opponent of its viability) is considered vital in nuclear deterrence, as otherwise the other side might attempt to try to win a nuclear war in one massive Pre-emptive nuclear strike, first strike against its opponent's own nuclear forces. Theory The possession of second-strike capabilities counters a first-strike nuclear threat and can support a no first use nuclear strategy. Reciprocal second-strike capabilities usually cause a mutual assured destruction defence strategy, though one side may have a lower level minimal deterrence response. Second-strike capabilities can be further strengthened by implementing fail-deadly mechanisms. These mechanisms create a threshold and guaranteed consequences if that threshold is breached. For instance, a threshold m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norwegian Sea
The Norwegian Sea (; ; ) is a marginal sea, grouped with either the Atlantic Ocean or the Arctic Ocean, northwest of Norway between the North Sea and the Greenland Sea, adjoining the Barents Sea to the northeast. In the southwest, it is separated from the Atlantic Ocean by a submarine ridge running between Iceland and the Faroe Islands. To the north, the Jan Mayen Ridge separates it from the Greenland Sea. Unlike many other seas, most of the bottom of the Norwegian Sea is not part of a continental shelf and therefore lies at a great depth of about two kilometres on average. Rich deposits of oil and natural gas are found under the sea bottom and are being explored commercially, in the areas with sea depths of up to about one kilometre. The coastal zones are rich in fish that visit the Norwegian Sea from the North Atlantic or Barents Sea (cod) for spawning. The warm North Atlantic Current ensures relatively stable and high water temperatures, so that unlike the Arctic seas, the No ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Littoral
The littoral zone, also called litoral or nearshore, is the part of a sea, lake, or river that is close to the shore. In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely inundated), to coastal areas that are permanently submerged — known as the ''foreshore'' — and the terms are often used interchangeably. However, the geographical meaning of ''littoral zone'' extends well beyond the intertidal zone to include all neritic waters within the bounds of continental shelves. Etymology The word ''littoral'' may be used both as a noun and as an adjective. It derives from the Latin noun ''litus, litoris'', meaning "shore". (The doubled ''t'' is a late-medieval innovation, and the word is sometimes seen in the more classical-looking spelling ''litoral''.) Description The term has no single definition. What is regarded as the full extent of the littoral zone, and the way the littoral zone is divided into subre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Arctic
The Extreme North or the Far North is a large part of Russia located mainly north of the Arctic Circle and boasting enormous mineral and natural resources. Its total area is about , comprising about one-third of Russia's total area. Formally, the regions of the Extreme North comprise the whole of Chukotka Autonomous Okrug, Kamchatka Krai, Magadan Oblast, Murmansk Oblast and Sakha, as well as certain parts and cities of Arkhangelsk Oblast, Irkutsk Oblast, Khabarovsk Krai, Komi Republic, Krasnoyarsk Krai, Republic of Karelia, Sakhalin Oblast, Tuva, Tyumen Oblast, as well as all islands of the Arctic Ocean, its seas, the Bering Sea, and the Sea of Okhotsk. Due to the remoteness and the harsh conditions of the area, since the Soviet times people who work there have traditionally been entitled by the Russian government to higher wages and many other benefits, including earlier retirement age, than workers of other regions. As a result of the climate and environment, the indige ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Ice
Sea ice arises as seawater freezes. Because ice is less density, dense than water, it floats on the ocean's surface (as does fresh water ice). Sea ice covers about 7% of the Earth's surface and about 12% of the world's oceans. Much of the world's sea ice is enclosed within the polar ice packs in the Earth's polar regions: the Arctic ice pack of the Arctic Ocean and the Antarctic ice pack of the Southern Ocean. Polar packs undergo a significant yearly cycling in surface extent, a natural process upon which depends the Arctic ecology, including the Arctic sea ice ecology and history, ocean's ecosystems. Due to the action of winds, currents and temperature fluctuations, sea ice is very dynamic, leading to a wide variety of ice types and features. Sea ice may be contrasted with icebergs, which are chunks of ice shelf, ice shelves or glaciers that Ice calving, calve into the ocean. Depending on location, sea ice expanses may also incorporate icebergs. General features and dynamics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moray Eel
Moray eels, or Muraenidae (), are a family (biology), family of eels whose members are found worldwide. There are approximately 200 species in 15 genera which are almost exclusively Marine (ocean), marine, but several species are regularly seen in brackish water, and a few are found in fresh water. The English name, ''moray'', dates back to the early 17th century, and is believed to be a derivative from Portuguese language, Portuguese , which itself derives from Latin , in turn from Greek language, Greek , ; these are the Latin and Greek names of the Mediterranean moray. Anatomy The dorsal fin extends from just behind the head along the back and joins seamlessly with the caudal fin, caudal and anal fins. Most species lack pectoral fin, pectoral and pelvic fins, adding to their serpentine appearance. Their eyes are rather small; morays rely mostly on their highly developed sense of smell, lying in wait to Ambush predator, ambush prey. The body is generally patter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sevmash
JSC PO Sevmash () is a Russia, Russian joint-stock company (JSC) under the Vertical integration, vertically-integrated United Shipbuilding Corporation. The Shipyard, shipbuilding operations of Sevmash is in the port city of Severodvinsk on the White Sea in the Russian Federation. "Sevmash" is an abbreviation of ''Severnoye Mashinostroitelnoye Predpriyatie'' (Северное Машиностроительное Предприятие), i.e. "Northern Machine-Building Enterprise". Sevmash is the largest shipbuilding enterprise in Russia and today the country's only nuclear submarine producer. In 2020, the company employed 30,000 people and as of 2009, its revenue from military production was $533.02 million. Military production The shipyard's main specialization is manufacturing of ships, submarines and military equipment for the Russian Navy. Sevmash is the only shipyard in Russia producing nuclear submarines. , the lead vessel of the nuclear-powered cruise missile submarines, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amur Shipbuilding Plant
OJSC Amur Shipbuilding Plant (, ''Amurskiy Sudostroitelnyy Zavod'', and also called the "Leninskiy Komsomol Shipyard") is an important shipyard in eastern Russia, based in Komsomolsk-on-Amur, and founded in 1932. It employs 15,000 people, and produces both civilian and military ships, including nuclear submarines. Around 97 submarines (56 nuclear-powered and 41 conventional) as well as 36 warships were built at the yard. The shipyard started building nuclear submarines in 1957, with the first one completed in 1960. Submarines built at the Amur Shipbuilding plant include Delta-class submarine, Delta I class ballistic missile submarines, Echo-class submarine, Echo I and II class cruise missile submarines and Akula-class submarine, ''Akula''-class attack submarines. In 1992, then-president Boris Yeltsin announced that the Sevmash shipyard in Severodvinsk would remain the only nuclear submarine construction site. In 2008, the first nuclear submarine built at the shipyard in 13 years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GIUK Gap
The GIUK gap (sometimes written G-I-UK) is an area in the northern Atlantic Ocean that forms a naval choke point. Its name is an acronym for ''Greenland, Iceland'', and the ''United Kingdom'', the gap being the two stretches of open ocean among these three landmasses. It separates the Norwegian Sea and the North Sea from the open Atlantic Ocean. The term is typically used in relation to military topics. The area has for some nations been considered strategically important since the beginning of the 20th century. Strategic significance to the Kingdom of Denmark Comprising Greenland, the Faroe Islands and Denmark, the Kingdom of Denmark is an Arctic state alongside seven other countries whose territories cover the Arctic region. All matters of foreign policy for both Greenland and the Faroe Islands fall within the jurisdiction of the Danish government. The Danish government has historically used its jurisdiction over foreign policy in both Greenland and the Faroe Islands to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SOSUS
Sound Surveillance System (SOSUS) was the original name for a submarine detection system based on passive sonar developed by the United States Navy to track Soviet Navy, Soviet submarines. The system's true nature was classified with the name and acronym SOSUS classified as well. The unclassified name ''Project Caesar'' was used to cover the installation of the system and a cover story developed regarding the shore stations, identified only as a Naval Facility (NAVFAC), being for oceanographic research. The name changed to Integrated Undersea Surveillance System (IUSS) in 1985, as the fixed bottom arrays were supplemented by the mobile Surveillance Towed Array Sensor System (SURTASS) and other new systems. The commands and personnel were covered by the "oceanographic" term until 1991 when the mission was declassified. As a result, the commands, Oceanographic System Atlantic and Oceanographic System Pacific became Undersea Surveillance Atlantic and Undersea Surveillance Pacific, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Main Directorate Of Deep-Sea Research
The Main Directorate of Deep-Sea Research (, transcribed as ''Glavnoye upravlenie glubokovodnikh issledovanii'' or GUGI) is a Russian agency belonging to the Armed Forces of the Russian Federation. It is one of the most secret parts of the navy. Its objective is to operate submarines that are able to dive deep into the sea, in order to gather intelligence or to work with installations on the seabed, including sabotage. Its original target was the Western surveillance systems of submarines from the Soviet Union and it is able to eavesdrop and sever the fiber optic cables crossing the seas. It also tests emergency equipment and does medical research on the physiology of diving. The year of creation of the directorate is uncertain. 1963 (as military unit 90802), 1965, and 1976 have been mentioned. The directorate is directly subordinate to the Ministry of Defense. It is located separated from the normal navy bases, with its headquarters in Saint Petersburg and a naval base in Olenya ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
