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Sappers Divers Group
The Divers Group (AGRUMERG, ) is the Portuguese Navy's sapper clearance diver unit. It was created in 2004 through the grouping of the several already existing diving subunits, to exercise administrative, logistical and operational control and management, maritime special operations capable, over all diver units and personnel. It groups under a single command, all previously existing Sappers Divers Units (EOD/Combat Divers, Salvage/SAR, MCM/MW) and Services (Training and Logistics). Organization The Divers Group is a command, within the Portuguese Navy Subsurface Squadron, and is commanded by a senior naval officer. It includes: * Commander *Operations Cell * Diving Service (''Serviço de Mergulho'') - Logistics * Divers School (''Escola de Mergulhadores'') - Training * Sappers Divers Detachment No. 1 (''Destacamento de Mergulhadores Sapadores N.º1 - DMS1'') - EOD / Combat Divers * Sappers Divers Detachment No. 2 (''Destacamento de Mergulhadores Sapadores N.º2 - DMS2'') - Salv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clearance Diver
A clearance diver was originally a specialist naval underwater diving, diver who used explosives underwater to remove obstructions to make harbours and shipping channels safe to navigate, but the term "clearance diver" was later used to include other naval underwater work. Units of clearance divers were first formed during and after World War II to clear ports and harbours in the Mediterranean and Northern Europe of unexploded ordnance and shipwrecks and booby traps laid by the Kriegsmarine, Germans. History Clearance Diving takes its name from the operations carried out towards the end and after the Second World War to clear the ports and harbours of the Mediterranean Sea, Mediterranean and Northern Europe of unexploded ordnance and booby traps laid by the Germans.This work was undertaken by RN Rendering Mines Safe (RMS) and Bomb Disposal Units and later by Port Clearance Parties or ‘P’ Parties, two of which (Naval Parties 1571 and 1572) went into action soon after Norman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seabed
The seabed (also known as the seafloor, sea floor, ocean floor, and ocean bottom) is the bottom of the ocean. All floors of the ocean are known as seabeds. The structure of the seabed of the global ocean is governed by plate tectonics. Most of the ocean is very deep, where the seabed is known as the abyssal plain. Seafloor spreading creates mid-ocean ridges along the center line of major ocean basins, where the seabed is slightly shallower than the surrounding abyssal plain. From the abyssal plain, the seabed slopes upward toward the continents and becomes, in order from deep to shallow, the continental rise, Continental slope, slope, and Continental shelf, shelf. The depth within the seabed itself, such as the depth down through a sediment core, is known as the "depth below seafloor". The ecological environment of the seabed and the deepest waters are collectively known, as a habitat for creatures, as the "benthos". Most of the seabed throughout the world's oceans is covered in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combat Diving
A frogman is someone who is trained in scuba diving or swimming underwater. The term often applies more to professional rather than recreational divers, especially those working in a tactical capacity that includes military, and in some European countries, police work. Such personnel are also known by the more formal names of combat diver, combatant diver, or combat swimmer. The word ''frogman'' first arose in the stage name the "Fearless Frogman" of Paul Boyton in the 1870s and later was claimed by John Spence, an enlisted member of the U.S. Navy and member of the OSS Maritime Unit, to have been applied to him while he was training in a green waterproof suit. The term ''frogman'' is occasionally used to refer to a civilian scuba diver, such as in a police diving role. In the United Kingdom, police divers have often been called "police frogmen". Some countries' tactical diver organizations include a translation of the word ''frogman'' in their official names, e.g., Denmark's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Units And Formations Established In 2004
A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare War is an armed conflict between the armed forces of State (polity), states, or between governmental forces and armed groups that are organized under a certain command structure and have the capacity to sustain military operations, or betwe .... Militaries are typically authorized and maintained by a sovereign state, with their members identifiable by a distinct military uniform. They may consist of one or more military branches such as an army, navy, air force, space force, marines, or coast guard. The main task of a military is usually defined as defence of their state and its interests against external armed threats. In broad usage, the terms "armed forces" and "military" are often synonymous, although in technical usage a distinction is sometimes made in which a country's armed forces may include other paramilitary forces such as armed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Special Forces Of Portugal
Special or specials may refer to: Policing * Specials, Ulster Special Constabulary, the Northern Ireland police force * Specials, Special Constable, an auxiliary, volunteer, or temporary; police worker or police officer * Special police forces Military * Special forces * Special operations Literature * Specials (novel), ''Specials'' (novel), a novel by Scott Westerfeld * ''Specials'', the comic book heroes, see Rising Stars (comic), ''Rising Stars'' (comic) Film and television * Special (lighting), a stage light that is used for a single, specific purpose * Special (film), ''Special'' (film), a 2006 scifi dramedy * The Specials (2000 film), ''The Specials'' (2000 film), a comedy film about a group of superheroes * Special 26, a 2013 Indian Hindi-language period heist thriller film * The Specials (2019 film), ''The Specials'' (2019 film), a film by Olivier Nakache and Éric Toledano * Television special, television programming that temporarily replaces scheduled programming * Spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deep Diving
Deep diving is underwater diving to a depth beyond the normal range accepted by the associated community. In some cases this is a prescribed limit established by an authority, while in others it is associated with a level of certification or training, and it may vary depending on whether the diving is recreational, technical or commercial. Nitrogen narcosis becomes a hazard below and hypoxic breathing gas is required below to lessen the risk of oxygen toxicity. At much greater depths, breathing gases become supercritical fluids, making diving with conventional equipment effectively impossible regardless of the physiological effects on the human body. Air, for example, becomes a supercritical fluid below about . For some recreational diving agencies, "Deep diving", or "Deep diver" may be a certification awarded to divers that have been trained to dive to a specified depth range, generally deeper than . However, the Professional Association of Diving Instructors (PADI) define ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Praça Do Comércio
The Praça do Comércio (; ) is a large, harbour-facing plaza in Portugal's capital, Lisbon, and is one of the largest in Portugal, with an area of 175 by 175 m (574 by 574 ft), that is, 30,600 m2 (329,000 ft2). Facing the Tagus () to the South, the plaza is still commonly known in Portuguese as Terreiro do Paço ( (), as it hosted the Paço da Ribeira () until the latter was destroyed by the great 1755 Lisbon earthquake (the subway station located there is still named after the old name of the plaza). After the earthquake, the plaza was completely remodeled as part of the rebuilding of the Pombaline Downtown (''Baixa''), ordered by Sebastião José de Carvalho e Melo, 1st Marquis of Pombal, who was (chief) Minister of Portugal from 1750 to 1777, during the reign of the Portuguese King José I. From the 19th century onwards, Praça do Comércio became the seat of some of the most important Portuguese state departments, including the Ministries of Finances, Internal Adminis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lisbon Metro
The Lisbon Metro () is a rapid transit system in Lisbon, Portugal. Opened in December 1959, it was the first rapid transit system in Portugal. , the system's four lines total of route and serve 56 stations. History Initial plans The idea of building a system of underground railways for the city of Lisbon first arose in 1888. It was first proposed by Henrique de Lima e Cunha, a military engineer who had published a proposal in the journal ''Obras Públicas e Minas'' ''(Public Works and Mines)'' for a network with several lines that could serve the Portuguese capital. Concrete plans took longer to evolve, though. Lanoel Aussenac d'Abel and Abel Coelho presented theirs in 1923, and José Manteca Roger and Juan Luque Argenti theirs one year later, in 1924. None of these plans were carried out. After World War II, in which Portugal remained neutral, the national economy took off and the financial possibilities arising from the Marshall Plan provided a strong boost to the pote ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shore
A coast (coastline, shoreline, seashore) is the land next to the sea or the line that forms the boundary between the land and the ocean or a lake. Coasts are influenced by the topography of the surrounding landscape and by aquatic erosion, such as that caused by waves. The geological composition of rock and soil dictates the type of shore that is created. Earth has about of coastline. Coasts are important zones in natural ecosystems, often home to a wide range of biodiversity. On land, they harbor ecosystems, such as freshwater or estuarine wetlands, that are important for birds and other terrestrial animals. In wave-protected areas, coasts harbor salt marshes, mangroves, and seagrasses, all of which can provide nursery habitat for finfish, shellfish, and other aquatic animals. Rocky shores are usually found along exposed coasts and provide habitat for a wide range of sessile animals (e.g. mussels, starfish, barnacles) and various kinds of seaweeds. In physical ocean ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Search And Destroy
Seek and destroy (also known as search and destroy, or S&D) is a military strategy which consists of inserting infantry forces into hostile territory and directing them to search and then attack enemy targets before immediately withdrawing. First used as part of counterinsurgency operations during military conflicts in Southeast Asia such as the Malayan Emergency and the Vietnam War, the strategy was developed to take advantage of new technological capabilities available to Western militaries such as the helicopter, which allowed for the adoption of new tactics like the air assault. Primarily used in jungle warfare, the strategy was developed with asymmetric tactics in mind rather than conventional warfare. A related strategy known as clear and hold, which entailed military forces clearing an area of enemy personnel and then keeping the area clear of enemies while winning the local population's support, was developed around the same period and used alongside the search and de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minelaying
A minelayer is any warship, submarine, military aircraft or land vehicle deploying explosive mines. Since World War I the term "minelayer" refers specifically to a naval ship used for deploying naval mines. "Mine planting" was the term for installing controlled mines at predetermined positions in connection with coastal fortifications or harbor approaches that would be detonated by shore control when a ship was fixed as being within the mine's effective range. An army's special-purpose combat engineering vehicles used to lay landmines are sometimes called "minelayers". Etymology Before World War I, mine ships were termed mine planters generally. For example, in an address to the United States Navy ships of Mine Squadron One at Portland, England, Admiral Sims used the term "mine layer" while the introduction speaks of the men assembled from the "mine planters". During and after that war the term "mine planter" became particularly associated with defensive coastal fortificati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
