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Tridente-class Submarine
The ''Tridente''-class submarines, also designated as U 209PN, are diesel-electric submarines based on the Type 214 submarine developed by Howaldtswerke-Deutsche Werft GmbH (HDW) for the Portuguese Navy. This class of submarines was acquired by Portugal to replace the previous submarines of the , then being operated by the navy. Originally, HDW proposed the Type 209 submarine (U-209) during the competition, but decided to later enter a new proposal based on the Type 214. It is for this reason that the ''Tridente'' class is commonly designated as the U 209PN. The class and its ships are the first to not be named after marine animals, thus breaking a tradition retracing back to 1913, when the first submarine entered service with the Portuguese Navy. Ships The ''Tridente''-class submarines are wrongly classed in the "diesel-electric" class. Their propulsion is exclusively electric, with electric motors powered by batteries. These batteries may be charged while submerged by "fuel- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lisbon Naval Base
The Lisbon Naval Base (Portuguese: ''Base Naval de Lisboa''), is the main installation and operational base of the Portuguese Navy. Located at the former Royal Estate of Alfeite on the south bank of the Tagus river's estuary, near the city of Almada, the installation is sometimes referred to as the Alfeite Naval Base. Most of the Portuguese Naval fleet ships are based at Alfeite, as well as many of its administrative, training and support services. Within its perimeter are also located the Naval School, the Naval Technologies School, the Alfeite Arsenal, the Marine corps Base and other Portuguese Navy units. The Lisbon Naval Base is an administrative entity that – besides the main naval station at Alfeite – manages several other smaller naval facilities in the region. History Lisbon and the neighbor Tagus estuary has always been the largest and most important naval base of Portugal, since the 12th century. During the Age of Discovery, in the 15th and 16th centuries, Lisbo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lisbon
Lisbon (; pt, Lisboa ) is the capital and largest city of Portugal, with an estimated population of 544,851 within its administrative limits in an area of 100.05 km2. Grande Lisboa, Lisbon's urban area extends beyond the city's administrative limits with a population of around 2.7 million people, being the List of urban areas of the European Union, 11th-most populous urban area in the European Union.Demographia: World Urban Areas - demographia.com, 06.2021 About 3 million people live in the Lisbon metropolitan area, making it the third largest metropolitan area in the Iberian Peninsula, after Madrid and Barcelona. It represents approximately 27% of the country's population. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarines Of The Portuguese Navy
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as ''boats'' rather than ''ships'' irrespective of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and they were adopted by several navies. They were first widely used during World War I (1914–1918), and are now used in many navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, blockade running, nuclear deterrence, reconnaissance, conventional land attack (for example, using a cruise missile), and covert insertion of spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Classes
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as ''boats'' rather than ''ships'' irrespective of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and they were adopted by several navies. They were first widely used during World War I (1914–1918), and are now used in many navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, blockade running, nuclear deterrence, reconnaissance, conventional land attack (for example, using a cruise missile), and covert insertion of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attack Submarines
An attack submarine or hunter-killer submarine is a submarine specifically designed for the purpose of attacking and sinking other submarines, surface combatants and merchant vessels. In the Soviet Navy, Soviet and Russian Navy, Russian navies they were and are called "multi-purpose submarines". They are also used to protect friendly surface combatants and Ballistic missile submarine, missile submarines. Some attack subs are also armed with submarine-launched cruise missile, cruise missiles, increasing the scope of their potential missions to include land targets. Attack submarines may be either Nuclear marine propulsion, nuclear-powered or diesel-electric ("conventionally") powered. In the United States Navy hull classification symbol, naming system, and in the equivalent NATO system (STANAG 1166), nuclear-powered attack submarines are known as SSN (hull classification symbol), SSNs and their Anti-submarine warfare, anti-submarine (ASW) diesel-electric predecessors are SSK (hull ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shipyard
A shipyard, also called a dockyard or boatyard, is a place where ships are built and repaired. These can be yachts, military vessels, cruise liners or other cargo or passenger ships. Dockyards are sometimes more associated with maintenance and basing activities than shipyards, which are sometimes associated more with initial construction. The terms are routinely used interchangeably, in part because the evolution of dockyards and shipyards has often caused them to change or merge roles. Countries with large shipbuilding industries include Australia, Brazil, China, Croatia, Denmark, Finland, France, Germany, India, Ireland, Italy, Japan, the Netherlands, Norway, the Philippines, Poland, Romania, Russia, Singapore, South Korea, Sweden, Taiwan, Turkey, the United Arab Emirates, Ukraine, the United Kingdom, the United States and Vietnam. The shipbuilding industry is more fragmented in Europe than in Asia where countries tend to have fewer, larger companies. Many naval vessels ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kiel
Kiel () is the capital and most populous city in the northern Germany, German state of Schleswig-Holstein, with a population of 246,243 (2021). Kiel lies approximately north of Hamburg. Due to its geographic location in the southeast of the Jutland peninsula on the southwestern shore of the Baltic Sea, Kiel has become one of Germany's major maritime centres, known for a variety of international sailing events, including the annual Kiel Week, which is the biggest sailing event in the world. Kiel is also known for the Kiel mutiny, Kiel Mutiny, when sailors refused to board their vessels in protest against Germany's further participation in World War I, resulting in the abdication of the Wilhelm II, German Emperor, Kaiser and the formation of the Weimar Republic. The Olympic sailing competitions of the 1936 Summer Olympics, 1936 and the 1972 Summer Olympics#Venues, 1972 Summer Olympics were held in the Bay of Kiel. Kiel has also been one of the traditional homes of the German Nav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Station Norfolk
Naval Station Norfolk is a United States Navy base in Norfolk, Virginia, that is the headquarters and home port of the U.S. Navy's Fleet Forces Command. The installation occupies about of waterfront space and of pier and wharf space of the Hampton Roads peninsula known as Sewell's Point. It is the world's largest naval station, with the largest concentration of U.S. Navy forces through 75 ships alongside 14 piers and with 134 aircraft and 11 aircraft hangars at the adjacently operated Chambers Field. Port Services controls more than 3,100 ships' movements annually as they arrive and depart their berths. Air Operations conducts over 100,000 flight operations each year, an average of 275 flights per day or one every six minutes. Over 150,000 passengers and 264,000 tons of mail and cargo depart annually on Air Mobility Command (AMC) aircraft and other AMC-chartered flights from the airfield's AMC Terminal. History The area where the base is located was the site of the original ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennant Number
In the Royal Navy and other navies of Europe and the Commonwealth of Nations, ships are identified by pennant number (an internationalisation of ''pendant number'', which it was called before 1948). Historically, naval ships flew a flag that identified a flotilla or type of vessel. For example, the Royal Navy used a red burgee for torpedo boats and a pennant with an H for torpedo boat destroyers. Adding a number to the type-identifying flag uniquely identified each ship. In the current system, a letter prefix, called a ''flag superior'', identifies the type of ship, and numerical suffix, called a flag inferior, uniquely identifies an individual ship. Not all pennant numbers have a flag superior. Royal Navy systems The Royal Navy first used pennants to distinguish its ships in 1661 with a proclamation that all of his majesty's ships must fly a union pennant. This distinction was further strengthened by a proclamation in 1674 which forbade merchant vessels from flying any pennants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Of Good Hope
The Cape of Good Hope ( af, Kaap die Goeie Hoop ) ;''Kaap'' in isolation: pt, Cabo da Boa Esperança is a rocky headland on the Atlantic coast of the Cape Peninsula in South Africa. A common misconception is that the Cape of Good Hope is the southern tip of Africa, based on the misbelief that the Cape was the dividing point between the Atlantic and Indian oceans, and have nothing to do with north or south. In fact, by looking at a map, the southernmost point of Africa is Cape Agulhas about to the east-southeast. The currents of the two oceans meet at the point where the warm-water Agulhas current meets the cold-water Benguela current and turns back on itself. That oceanic meeting point fluctuates between Cape Agulhas and Cape Point (about east of the Cape of Good Hope). When following the western side of the African coastline from the equator, however, the Cape of Good Hope marks the point where a ship begins to travel more eastward than southward. Thus, the first mode ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Snorkel
A submarine snorkel is a device which allows a submarine to operate submerged while still taking in air from above the surface. British Royal Navy personnel often refer to it as the snort. A concept devised by Dutch engineers, it was widely used on German U-boats during the last year of World War II and known to them as a ''Schnorchel''. History Until the advent of nuclear power, submarines were designed to operate on the surface most of the time and submerge only for evasion or for daylight attacks. Until the widespread use of radar after 1940, at night a submarine was safer on the surface than submerged, because sonar could detect boats underwater but was almost useless against a surface vessel. However, with continued radar improvement as the war progressed, submarines (notably, the German U-boats in the Battle of the Atlantic) were forced to spend more time underwater, running on electric motors that gave speeds of only a few knots and very limited range. An early submar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Howaldtswerke-Deutsche Werft
Howaldtswerke-Deutsche Werft (often abbreviated HDW) is a German shipbuilding company, headquartered in Kiel. It is part of the ThyssenKrupp Marine Systems (TKMS) group, owned by ThyssenKrupp. The Howaldtswerke shipyard was founded in Kiel in 1838 and merged with Hamburg-based Deutsche Werft to form Howaldtswerke-Deutsche Werft (HDW) in 1968. The company's shipyard was formerly used by Friedrich Krupp Germaniawerft until the end of World War II. History HDW was founded October 1, 1838 in Kiel by engineer August Howaldt and entrepreneur Johann Schweffel under the name ''Maschinenbauanstalt und Eisengießerei Schweffel & Howaldt'' (Machine Factory and Iron Foundry Schweffel & Howaldt), initially building boilers. The first steam engine for naval purposes was built in 1849 for the Von der Tann, a gunboat for the small navy of Schleswig-Holstein. In 1850, the company built an early submarine, ''Brandtaucher'', designed by Wilhelm Bauer. It had been intended to build the boat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_docked_at_Naval_Station_Norfolk%2C_in_October_1937.jpg "Click for more on -> Naval Station Norfolk")
