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AG Class Submarine
The American Holland-class submarines, also AG class or A class, were Holland 602 type submarines used by the Imperial Russian and Soviet Navies in the early 20th century. The small submarines participated in the World War I Baltic Sea and Black Sea theatres and a handful of them also saw action during World War II. Development The AG type was designed by John Philip Holland at Electric Boat Company. The design was known as Holland 602GF/602L,Тип "АГ" (Американский Голланд) ' '' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel-electric Submarine
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 navies, large and small. Their military uses include: attacking enemy surface ships (merchant and military) or other submarines; aircraft carrier protection; blockade running; nuclear deterrence; stealth operations in denied areas when gathering intelligence and doing recon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trans-Siberian Railroad
The Trans-Siberian Railway, historically known as the Great Siberian Route and often shortened to Transsib, is a large railway system that connects European Russia to the Russian Far East. Spanning a length of over , it is the longest railway line in the world. It runs from the city of Moscow in the west to the city of Vladivostok in the east. During the period of the Russian Empire, government ministers—personally appointed by Alexander III and his son Nicholas II—supervised the building of the railway network between 1891 and 1916. Even before its completion, the line attracted travelers who documented their experiences. Since 1916, the Trans-Siberian Railway has directly connected Moscow with Vladivostok. , expansion projects remain underway, with connections being built to Russia's neighbors Mongolia, China, and North Korea. Additionally, there have been proposals and talks to expand the network to Tokyo, Japan, with new bridges or tunnels that would connect the mainl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Movement
The White movement,. The old spelling was retained by the Whites to differentiate from the Reds. also known as the Whites, was one of the main factions of the Russian Civil War of 1917–1922. It was led mainly by the Right-wing politics, right-leaning and Conservatism, conservative officers of the Russian Empire, while the Bolsheviks who led the October Revolution in Russia, also known as the ''Reds'', and their supporters, were regarded as the main enemies of the Whites. It operated as a loose system of governments and administrations and military formations collectively referred to as the White Army, or the White Guard. Although the White movement included a variety of political opinions in Russia opposed to the Bolsheviks, from the republican-minded liberals through monarchists to the ultra-nationalist Black Hundreds, and did not have a universally-accepted leader or doctrine, the main force behind the movement were the conservative officers, and the resulting movement shared ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ukrainian State
The Ukrainian State (), sometimes also called the Second Cossack Hetmanate, Hetmanate (), was an Anti-communism, anti-Bolshevik government that existed on most of the modern territory of Ukraine (except for Western Ukraine) from 29 April to 14 December 1918. It was installed by German Empire, German military authorities after the socialist-leaning Central Council of Ukraine, Central Council of the Ukrainian People's Republic was dispersed on 28 April 1918. The Ukrainian State was governed by Pavlo Skoropadskyi, the hetman of all Ukraine, who outlawed all socialist-oriented political parties, creating an Anti-communism, anti-Bolshevik front with the Russian State. It collapsed in December 1918, when Skoropadskyi was deposed and the Ukrainian People's Republic returned to power in the form of the Directorate of Ukraine, Directorate. History Background As a result of the Bolshevik aggression, the government of the Ukrainian People's Republic that initially pursued anti-m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Revolution Of 1917
The Russian Revolution was a period of Political revolution (Trotskyism), political and social revolution, social change in Russian Empire, Russia, starting in 1917. This period saw Russia Dissolution of the Russian Empire, abolish its monarchy and adopt a socialist form of government following two successive revolutions and Russian Civil War, a civil war. It can be seen as the precursor for Revolutions of 1917–1923, other revolutions that occurred in the aftermath of World War I, such as the German Revolution of 1918–1919. The Russian Revolution was a key events of the 20th century, key event of the 20th century. The Russian Revolution was inaugurated with the February Revolution in 1917, in the midst of World War I. With the German Empire inflicting defeats on the front, and increasing logistical problems causing shortages of bread and grain, the Russian Army was losing morale, with large scale mutiny looming. Officials were convinced that if Tsar Nicholas II abdicated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonar
Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances ( ranging), communicate with or detect objects on or under the surface of the water, such as other vessels. "Sonar" can refer to one of two types of technology: ''passive'' sonar means listening for the sound made by vessels; ''active'' sonar means emitting pulses of sounds and listening for echoes. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. Acoustic location in air was used before the introduction of radar. Sonar may also be used for robot navigation, and sodar (an upward-looking in-air sonar) is used for atmospheric investigations. The term ''sonar'' is also used for the equipment used to generate and receive the sound. The acoustic frequencies used in sonar systems vary from very low ( infrasonic) to e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fessenden Transducer , an underwater sound project ...
Fessenden may refer to: People * Fessenden (surname) * Fessenden Nott Otis (1825-c. 1900), American pioneer in the medical field of urology Places * Fessenden, North Dakota, a city * 15939 Fessenden, an asteroid named after Reginald Fessenden * Fessenden, a fictional princedom in Melanie Rawn's Dragon Prince fantasy novel series Schools * Fessenden School, a private day and boarding school for boys in West Newton, Massachusetts * Fessenden Elementary School, a school in Ocala, Florida Other uses * USS ''Fessenden'' (DE-142), a destroyer escort which served in World War II, named in honor of Reginald Fessenden * Fessenden (guitars), a pedal steel guitar manufacturer * Fessenden oscillator A Fessenden oscillator is an electro-acoustic transducer invented by Reginald Fessenden, with development starting in 1912 at the Submarine Signal Company of Boston. It was the first successful acoustical echo ranging device. Similar in operat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British H-class Submarine
The British H-class submarines were Holland 602 type submarines used by the Royal Navy. The submarines constructed for the British Royal Navy between 1915 and 1919 were designed and built in response to German boats which mined British waters and sank coastal shipping with ease owing to their small size. The H class was created to perform similar operations in German waters, and to attack German submarines operating in British waters. Despite their cramped size and lack of a deck gun on some submarines, the class was popular amongst submariners, and saw action all around the British Isles, some being transferred as far as the Adriatic. Owing to the late arrival of most of the class, they were unable to have much impact in service, only destroying two German submarines and for the loss of four of their own number. Post-war, many were retained in the Royal Navy for training purposes, while four more were lost in accidents during the 1920s. At the outbreak of the Second Worl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ukraine
Ukraine is a country in Eastern Europe. It is the List of European countries by area, second-largest country in Europe after Russia, which Russia–Ukraine border, borders it to the east and northeast. Ukraine also borders Belarus to the north; Poland and Slovakia to the west; Hungary, Romania and Moldova to the southwest; and the Black Sea and the Sea of Azov to the south and southeast. Kyiv is the nation's capital and List of cities in Ukraine, largest city, followed by Kharkiv, Odesa, and Dnipro. Ukraine's official language is Ukrainian language, Ukrainian. Humans have inhabited Ukraine since 32,000 BC. During the Middle Ages, it was the site of early Slavs, early Slavic expansion and later became a key centre of East Slavs, East Slavic culture under the state of Kievan Rus', which emerged in the 9th century. Kievan Rus' became the largest and most powerful realm in Europe in the 10th and 11th centuries, but gradually disintegrated into rival regional powers before being d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mykolaiv
Mykolaiv ( ), also known as Nikolaev ( ) is a List of cities in Ukraine, city and a hromada (municipality) in southern Ukraine. Mykolaiv is the Administrative centre, administrative center of Mykolaiv Raion (Raions of Ukraine, district) and Mykolaiv Oblast (Oblasts of Ukraine, province). The city of Mykolaiv, which provides Ukraine with access to the Black Sea, is the location of the most downriver bridge crossing of the Southern Bug river. This city is one of the main shipbuilding centers of the Black Sea. Aside from three shipyards within the city, there are a number of research centers specializing in shipbuilding such as the State Research and Design Shipbuilding Center, Zoria-Mashproekt and others. As of 2022, the city had a population of Mykolaiv holds the honorary title Hero City of Ukraine. The city serves as a transportation hub for Ukraine, containing a sea port, commercial port, river port, highway, Junction (rail), railway junction, and airport. Much of Mykolaiv's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marti Yard
The Black Sea Shipyard (; ) was a shipbuilding facility in Mykolaiv, Ukraine, on the southern tip of the Mykolaiv peninsula. It was founded in 1895 by Belgian interests and began building warships in 1901. At the beginning of World War I in 1914, it was one of the largest industrial facilities in the Russian Empire. The shipyard was moribund in the first decades of the Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ... until the Soviets began building up their fleet in the 1930s and it began building surface warships as well as submarines. The yard was badly damaged during World War II and took several years to be rebuilt. Surface warship construction temporarily ended in the mid-1950s before being revived in the mid-1960s and submarines were last built in the yard in l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
