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O 21-class Submarine
The ''O 21'' class was a class of seven submarines, built for the Royal Netherlands Navy. The boats were still incomplete at the start of the German invasion of the Netherlands ''O 21'', ''O 22'', ''O 23'' and ''O 24'' were hastily launched and escaped to the United Kingdom. ''O 25'', ''O 26'' and ''O 27'' were not able to escape and were captured by the German forces. The ''Kriegsmarine'' ordered the completion of the boats and they entered German service as ''UD-3'', ''UD-4'' and ''UD-5''. The submarines diving depth was . Design One of the requirements the Royal Netherlands Navy The Royal Netherlands Navy ( nl, Koninklijke Marine, links=no) is the naval force of the Kingdom of the Netherlands. During the 17th century, the navy of the Dutch Republic (1581–1795) was one of the most powerful naval forces in the world an ... set for the ''O 21''-class was that it had to be able to dive deeper than the previous class, which was the ''O 19''-class submarine.Gerretse and Wijn, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotterdamsche Droogdok Maatschappij
The Rotterdamsche Droogdok Maatschappij (RDM) was the largest pre-World War II shipbuilding and repair company in Rotterdam in the Netherlands, existing from 1902 to 1996. It built 355 mostly major seagoing vessels, 18 of which were submarines. RDM on the Dutch Wikipedia During its existence, the wharf operated 12 floating docks and in its heyday employed 7,000 people at one time. Establishment of the company The Rotterdamsche Droogdok Maatschappij was a successor of the company De Maas, founded in Delfshaven in 1856 by Duncan Christie. Shipbuilder De Maas was located in an area that is now the Saint Job's harbor (Sint Jobshaven) of Rotterdam. This company would have to move in 1905 because the lease on the land would end that year. On 14 February 1899 it therefore bought 4.5 hectares of land in Heijplaat, south of the Meuse for 44,000 guilders. A consortium for a drydock company On 14 April 1899 a consortium was founded by people connected to the harbor of Rotterdam and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Damen Schelde Naval Shipbuilding
Damen Naval is a Dutch shipyard, and a continuation of the Koninklijke Maatschappij De Schelde, responsible for a number of ships used by the Royal Netherlands Navy. It is owned by the Damen Group. Damen Naval is situated in Vlissingen. History The company was founded October 8, 1875, as the ''NV Koninklijke Maatschappij De Schelde'' (KMS) after shipbuilder Arie Smit had taken over the ''Marine Etablissement'' the wharf owned by the Dutch navy. Besides shipbuilding and repair, the company also builds machines, engines, steam turbines, airplanes, and light-metal products. Koninklijk is a royal title granted by the Monarchy of the Netherlands, Dutch Crown. In 1965 the company merged with the NV Rotterdamsche Droogdok Maatschappij (RDM) and the NV Motorenfabriek Thomassen of De Steeg, which resulted in the founding, on March 4, 1966, of the Rijn-Schelde, Rijn-Schelde Machinefabrieken en Scheepswerven NV (RSMS). Pressured by the Dutch government the Verolme Verenigde Scheepswerven NV ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilton-Fijenoord
Wilton-Fijenoord was a shipbuilding and repair company in Schiedam the Netherlands from 1929 to 1999. Presently, the shipyard of Wilton-Feijnoord is part of Damen Shiprepair Rotterdam. Merger of Wilton and Fijenoord (1929) Wilton-Fijenoord had two predecessors. Wilton's Dok- en Werf Maatschappij was the biggest predecessor of Wilton-Fijenoord, the other was the Shipyard Fijenoord. By the mid 1920s these shipyards had become rather similar. Wilton still had an advantage in ship repair, and Fijenoord was still ahead in ship construction, especially for the navy. The idea for a merger dated as far back as at least 1927. The rationale was that the still profitable Wilton company had a major overcapacity and was spread over two locations. The activities of Fijenoord could just as well be done in Schiedam. A concentration of the combined activities in Schiedam would lead to major cost savings. In 1929 talks led to an agreement for a financial merger between the companies. Shares in Wil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine
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 Autonomous underwater vehicle, 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 navy, navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, Blockade runner, blockade running, Ballistic missile submarine, nuclear deterrence, reconnaissance, conventio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Engine
The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-called compression-ignition engine (CI engine). This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine (gasoline engine) or a gas engine (using a gaseous fuel like natural gas or liquefied petroleum gas). Diesel engines work by compressing only air, or air plus residual combustion gases from the exhaust (known as exhaust gas recirculation (EGR)). Air is inducted into the chamber during the intake stroke, and compressed during the compression stroke. This increases the air temperature inside the cylinder to such a high degree that atomised diesel fuel injected into the combustion chamber ignites. With the fuel being injected into the air just before combustion, the dispersion of the fuel is une ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Motor
An electric motor is an Electric machine, electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a Electromagnetic coil, wire winding to generate force in the form of torque applied on the motor's shaft. An electric generator is mechanically identical to an electric motor, but operates with a reversed flow of power, converting mechanical energy into electrical energy. Electric motors can be powered by direct current (DC) sources, such as from batteries, or rectifiers, or by alternating current (AC) sources, such as a power grid, Inverter (electrical), inverters or electrical generators. Electric motors may be classified by considerations such as power source type, construction, application and type of motion output. They can be powered by AC or DC, be Brushed motor, brushed or Brushless motor, brushless, single-phase, Two-phase electric power, two-p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torpedo Tube
A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboard surface vessels. Deck-mounted torpedo launchers are usually designed for a specific type of torpedo, while submarine torpedo tubes are general-purpose launchers, and are often also capable of deploying naval mine, mines and cruise missiles. Most modern launchers are standardized on a diameter for light torpedoes (deck mounted aboard ship) or a diameter for heavy torpedoes (underwater tubes), although other sizes of torpedo tube have been used: see Torpedo#Classes and diameters, Torpedo classes and diameters. Submarine torpedo tube A submarine torpedo tube is a more complex mechanism than a torpedo tube on a surface ship, because the tube has to accomplish the function of moving the torpedo from the normal atmospheric pressure within t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Class
A ship class is a group of ships of a similar design. This is distinct from a ship type, which might reflect a similarity of tonnage or intended use. For example, is a nuclear aircraft carrier (ship type) of the (ship class). In the course of building a class of ships, design changes might be implemented. In such a case, the ships of different design might not be considered of the same class; each variation would either be its own class, or a subclass of the original class (see for an example). If ships are built of a class whose production had been discontinued, a similar distinction might be made. Ships in a class often have names linked by a common factor: e.g. s' names all begin with T (, , ); and s are named after American battles (, , , ). Ships of the same class may be referred to as sister ships. Naval ship class naming conventions Overview The name of a naval ship class is most commonly the name of the lead ship, the first ship commissioned or built of its design. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine
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 Autonomous underwater vehicle, 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 navy, navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, Blockade runner, blockade running, Ballistic missile submarine, nuclear deterrence, reconnaissance, conventio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Netherlands Navy
The Royal Netherlands Navy ( nl, Koninklijke Marine, links=no) is the naval force of the Kingdom of the Netherlands. During the 17th century, the navy of the Dutch Republic (1581–1795) was one of the most powerful naval forces in the world and played an active role in the Anglo-Dutch Wars, the Franco-Dutch War, and wars against Spain and several other European powers. The Batavian Navy of the later Batavian Republic (1795–1806) and Kingdom of Holland (1806–1810) played an active role in the Napoleonic Wars, though mostly dominated by French interests. After the establishment of the modern Kingdom of the Netherlands, it served an important role in protecting Dutch colonial rule, especially in Southeast Asia, and would play a minor role in World War II, especially against the Imperial Japanese Navy. Since World War II, the Royal Netherlands Navy has taken part in expeditionary peacekeeping operations. Bases The main naval base is in Den Helder, North Holland. Secondary na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kriegsmarine
The (, ) was the navy of Germany from 1935 to 1945. It superseded the Imperial German Navy of the German Empire (1871–1918) and the inter-war (1919–1935) of the Weimar Republic. The was one of three official branches, along with the and the , of the , the German armed forces from 1935 to 1945. In violation of the Treaty of Versailles, the grew rapidly during German naval rearmament in the 1930s. The 1919 treaty had limited the size of the German navy and prohibited the building of submarines. ships were deployed to the waters around Spain during the Spanish Civil War (1936–1939) under the guise of enforcing non-intervention, but in reality supported the Nationalists against the Spanish Republicans. In January 1939, Plan Z, a massive shipbuilding program, was ordered, calling for surface naval parity with the British Royal Navy by 1944. When World War II broke out in September 1939, Plan Z was shelved in favour of a crash building program for submarines (U-boat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
O 19-class Submarine
The ''O 19'' class was a class of two submarines, built for the Royal Netherlands Navy by '' Fijenoord'', Rotterdam. The ships were designed as submarine minelayer for operations in both European and colonies waters. The class comprised ''O 19'' and ''O 20'' and were the first submarines in the world to be equipped with a submarine snorkel that allowed the submarine to run its diesel engines while submerged. The submarines diving depth was . These units were very similar to earlier Polish , with a reduced torpedo battery and 10 vertical mine tubes fitted on each beam. History The two Dutch submarines of the ''O 19''-class, which were built on June 15, 1936 at the yard of Wilton-Fijenoord in Schiedam, deviated in many ways from their predecessors. The boats were first planned as K XIX and K XX (K stands for submarines intended for Dutch Colonies) but during the construction it was decided that they were going to be put on the budget of the Department of War, which resulted in the n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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