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Eberhard Maertens
Erhard Maertens or Eberhard Maertens (26 February 1891 – 5 May 1945) was a German Vizeadmiral of the Kriegsmarine during World War II. From 16 June 1941 to 5 May 1943, he was Chief of Office of Naval Intelligence, Naval War Command () in the Oberkommando der Marine. Maertens was known for underestimating British intelligence, and specifically, overrating the security of the Naval Enigma machine, Enigma cipher machine. In 1941, he held a naval enquiry into the strength of Naval Enigma security after the capture of U-boat HMS Graph, U-570, and attributed all the suspicious losses in U-boats at the time to the British High-frequency direction finding, Huff-Duff. In the second enquiry, ordered by the Commander-in-Chief of the Navy () Karl Dönitz, in May 1943, he investigated a number of areas, which exculpated Enigma security in the end, for the second time, incorrectly blaming British 9.7 centimetre centimetric radar for the massive B-Dienst#Summary 2, losses in U-boats by mid 194 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Głogów
Głogów (; , rarely , ) is a city in western Poland. It is the county seat of Głogów County, in Lower Silesian Voivodeship. Głogów is the sixth largest town in the Voivodeship; its population in 2021 was 65,400. Among the oldest towns in Poland, Głogów was founded in the 10th century as a Piast defensive settlement and obtained city rights in the 13th century from Konrad I, Duke of Głogów, Duke Konrad I. It is known for one of the most important medieval Polish defensive battles against German incursions. Due to the town's strategic location on several trade routes, the townspeople received many privileges and benefits, which brought wealth and greatly reflected on the city's architecture. From 1251 to 1506, it was the capital of a Duchy of Głogów, small eponymous duchy ruled by a local line of the Piast dynasty and by future Kings of Poland from the Jagiellonian dynasty. Over time, Głogów grew to be one of the largest fortified towns in Lower Silesia. The demolition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Imperial Naval Academy
The German Imperial Naval Academy (''Marineakademie'') at Kiel, Germany, was the higher education institution of the Imperial German Navy, ''Kaiserliche Marine'', where naval officers were prepared for service in the higher levels of command, from 1872 until 1910. The Naval Academy was founded in 1872 by the Chief of the Imperial Admiralty, Lieutenant General Albrecht von Stosch, as a graduate school to prepare naval officers selected for higher duties in the Imperial Navy. He took as a model the Prussian Military Academy, which trained general staff officers for the Prussian Army. The curriculum consisted of navy subjects such as naval history and general education courses. In addition, course participants learned two modern foreign languages. Initially the training lasted for three years; beginning in 1883 it was shortened to two years. The Naval Academy was the training command of the Imperial Navy. From 1888 the Naval Academy was in the same building as the undergraduate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torpedo
A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such a device was called an automotive, automobile, locomotive, or fish torpedo; colloquially, a ''fish''. The term ''torpedo'' originally applied to a variety of devices, most of which would today be called mines. From about 1900, ''torpedo'' has been used strictly to designate a self-propelled underwater explosive device. While the 19th-century battleship had evolved primarily with a view to engagements between armored warships with large-caliber guns, the invention and refinement of torpedoes from the 1860s onwards allowed small torpedo boats and other lighter surface vessels, submarines/submersibles, even improvised fishing boats or frogmen, and later light aircraft, to destroy large ships without the need of large guns, though somet ... [...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 around 250,000, it is Germany's largest city on the Baltic Sea. It is located on the Kieler Förde inlet of the Bay of Kiel and lies in the southeast of the Jutland Peninsula, on the mouth of the Schwentine River, approximately northeast of Hamburg. The world's busiest artificial waterway, the Kiel Canal, has a terminus in Kiel's Holtenau district. This canal connects the Baltic to the North Sea, with its other end in Brunsbüttel. Most of Kiel is part of Holstein. The boroughs north of the Schwentine also belong to Wagria, while those north of the Kiel Canal are historically part of Southern Schleswig. Kiel is 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 re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Captain Lieutenant
Captain lieutenant or captain-lieutenant is a military rank, used in a number of navies worldwide and formerly in the British Army. Northern Europe Denmark, Norway and Finland The same rank is used in the navies of Denmark (), Norway () and Finland (; ). In Denmark and Norway, the higher rank is Ship-of-the-line captain (; ), and the lower rank is First lieutenant () in Denmark and Lieutenant () in Norway. The rank was also used in the Royal Danish Army between 1923 and 1962. Estonia In the Estonian Navy the similarly sounding rank of ''kaptenleitnant'' is an officer rank classified as NATO OF-4, i.e. equal to commander in the Royal Navy and United States Navy. Sweden A captain lieutenant (''Kaptenlöjtnant'') was in Sweden an officer standing between Kapten, captain and Löjtnant, lieutenant, who commanded one of the companies, which actually had the regimental commander, Överstelöjtnant, lieutenant colonel or Major (Sweden), major as officer commanding. In 1750, the ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Świnoujście
Świnoujście (; ; ; meaning " Świna ivermouth"; ) is a city in Western Pomerania and seaport on the Baltic Sea and Szczecin Lagoon, in the extreme north-west of Poland, mainly on the islands of Usedom and Wolin, and Karsibór island, once part of Usedom, now separated by the Piast Canal dug in the late 19th century to facilitate ship access to Szczecin. Świnoujście borders the German seaside resort of Ahlbeck on Usedom, connected by a street and of beach promenade. Since 1999, Świnoujście has been a city with powiat rights (), within West Pomeranian Voivodeship. The city lies in the geographic region of Pomerania and had a population of 38,728 in 2024. Świnoujście is one of the most important areas of the Szczecin metropolitan area. The Świnoujście LNG terminal, opened in 2015, is in the city. In 2023, the Świnoujście Tunnel connecting the islands of Wolin and Usedom was opened. Despite its relatively small population, Świnoujście is Poland's ninth-lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adjutant
Adjutant is a military appointment given to an Officer (armed forces), officer who assists the commanding officer with unit administration, mostly the management of “human resources” in an army unit. The term is used in French-speaking armed forces as a non-commissioned officer rank similar to a master sergeant or warrant officer but is not equivalent to the role or appointment of an adjutant. An adjutant general is commander of an army's administrative services. Etymology Adjutant comes from the Latin ''adiutāns'', present participle of the verb ''adiūtāre'', frequentative form of ''adiuvāre'' 'to help'; the Romans actually used ''adiūtor'' for the noun. Military appointment In various uniformed hierarchies, the term is used for a number of functions, but generally as a principal aide to a commanding officer. A regimental adjutant, garrison adjutant etc. is a staff officer who assists the commanding officer of a regiment, battalion or garrison in the details of reg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Königsberg
Königsberg (; ; ; ; ; ; , ) is the historic Germany, German and Prussian name of the city now called Kaliningrad, Russia. The city was founded in 1255 on the site of the small Old Prussians, Old Prussian settlement ''Twangste'' by the Teutonic Knights during the Northern Crusades, Baltic Crusades. It was named in honour of King Ottokar II of Bohemia, who led a campaign against the pagan Old Prussians, a Baltic tribe. A Baltic Sea, Baltic port city, it successively became the capital of the State of the Teutonic Order, the Duchy of Prussia and the provinces of East Prussia and Province of Prussia, Prussia. Königsberg remained the coronation city of the Prussian monarchy from 1701 onwards, though the capital was Berlin. From the thirteenth to the twentieth centuries on, the inhabitants spoke predominantly German language, German, although the city also had a profound influence upon the Lithuanian and Polish cultures. It was a publishing center of Lutheranism, Lutheran literatu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baltiysk
Baltiysk ( ); ; Old Prussian: ''Pillawa''; ; ; is a seaport town and the administrative center of Baltiysky District in Kaliningrad Oblast, Russia, located on the northern part of the Vistula Spit, on the shore of the Strait of Baltiysk separating the Vistula Lagoon from Gdańsk Bay. It had a population of Baltiysk, the westernmost town in Russia, is a major base of the Russian Navy's Baltic Fleet and is connected to St. Petersburg by ferry. History Old Prussian village Baltiysk was originally the site of an Old Prussian fishing village that was established on the coast of the Vistula Spit at some point in the 13th century. The village was named as "Pile" or "Pil" in several documents, possibly taking its name from ''pils'' the Old Prussian language word for fort. It was eventually conquered by the Teutonic Knights, with the name evolving into the German form of Pillau. In 1497, a storm surge dug a new gat in front of the village, and another large storm create ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goodwin Sands
Goodwin Sands is a sandbank at the southern end of the North Sea lying off the Deal, Kent, Deal coast in Kent, England. The area consists of a layer of approximately depth of fine sand resting on an Chalk, Upper Chalk platform belonging to the same geological feature that incorporates the White Cliffs of Dover. The banks lie between above the low water mark to around below low water, except for one channel that drops to around below. Tides and currents are constantly shifting the shoals. More than 2,000 ships are believed to have been wrecked upon the Goodwin Sands because they lie close to the major shipping channel, shipping lanes through the Straits of Dover. The few miles between the sands and the coast is also a safe anchorage, known as The Downs (ship anchorage), The Downs, used as a refuge from foul weather. Due to the dangers, the area—which also includes Brake Bank—is marked by numerous Lightship, lightvessels and buoys. Notable shipwrecks include in 1703 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SM U-48
SM ''U-48'' was one of the 329 submarines serving in the Imperial German Navy in World War I. ''U-48'' was engaged in the naval warfare and took part in the First Battle of the Atlantic. On 24 November 1917 she ran aground on Goodwin Sands. There she was fired on by . ''U-48'' was scuttled and abandoned. In violation of the Hague Conventions of 1899 and 1907 The Hague Conventions of 1899 and 1907 are a series of international treaties and declarations negotiated at two international peace conferences at The Hague in the Netherlands. Along with the Geneva Conventions, the Hague Conventions were amon ..., HMS ''Gipsy'' continued to fire, killing an additional 19 survivors. Only 17 survived to be taken prisoner. Summary of raiding history References Notes Citations Bibliography * {{DEFAULTSORT:U0048 World War I submarines of Germany 1915 ships Ships built in Danzig U-boats commissioned in 1916 Maritime incidents in 1917 U-boats scuttled in 1917 U-boats sun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SM U-47 (Germany)
SM ''U-47'' was a Type ''U-43'' submarine of the Imperial German Navy (''Kaiserliche Marine''.). She engaged in commerce raiding during the First World War. Career ''U-47'' entered service in early 1916, serving initially with the III Flotilla, and from 27 December 1916 with the Pola Flotilla. Her captain between 14 January and 14 June 1918 was Wilhelm Canaris. She carried out two war patrols and succeeded in sinking 14 ships for a total of . In addition to this she damaged three ships for and captured another ship as a prize. Engine troubles meant she could not be used from June 1918, and was finally scuttled at Pula Pula, also known as Pola, is the largest city in Istria County, west Croatia, and the List of cities and towns in Croatia, seventh-largest city in the country, situated at the southern tip of the Istria, Istrian peninsula in western Croatia, wi ... on 28 October 1918 during the evacuation. Summary of raiding history References Notes Citations Bibli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
