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Castor (1917 Ship)
''Castor'' was a Polish tugboat from the interwar period, initially serving in the Polish Navy and later in civilian service. The vessel was built in 1917 at a German shipyard in Kaliningrad and was purchased by Poland in the spring of 1920. Between 1920 and 1922, it served in the Polish Navy before being transferred to civilian use. During World War II, the tugboat operated under the flag of the Third Reich, but after the war, it returned to Poland. The vessel was decommissioned in 1955 and scrapped in 1958. ''Castor'' and '' Pollux'', acquired at the same time, were the first tugboats in the Polish fleet. History After Poland took over Pomerania, granted to it by the Treaty of Versailles, which included only two small fishing ports – Hel and Puck – efforts were undertaken to acquire auxiliary floating equipment, as only a certain number of fishing boats, cutters, and merchant sailing ships were taken over. The newly established Polish Navy, which was to receive six former ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poland
Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukraine to the east, Slovakia and the Czech Republic to the south, and Germany to the west. The territory has a varied landscape, diverse ecosystems, and a temperate climate. Poland is composed of Voivodeships of Poland, sixteen voivodeships and is the fifth most populous member state of the European Union (EU), with over 38 million people, and the List of European countries by area, fifth largest EU country by area, covering . The capital and List of cities and towns in Poland, largest city is Warsaw; other major cities include Kraków, Wrocław, Łódź, Poznań, and Gdańsk. Prehistory and protohistory of Poland, Prehistoric human activity on Polish soil dates to the Lower Paleolithic, with continuous settlement since the end of the Last Gla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torpedo Boat
A torpedo boat is a relatively small and fast naval ship designed to carry torpedoes into battle. The first designs were steam-powered craft dedicated to ramming enemy ships with explosive spar torpedoes. Later evolutions launched variants of self-propelled Whitehead torpedoes. These were inshore craft created to counter both the threat of battleships and other slow and heavily armed ships by using speed, agility, and powerful torpedoes, and the overwhelming expense of building a like number of capital ships to counter an enemy. A swarm of expendable torpedo boats attacking en masse could overwhelm a larger ship's ability to fight them off using its large but cumbersome guns. A fleet of torpedo boats could pose a similar threat to an adversary's capital ships, albeit only in the coastal areas to which their small size and limited fuel load restricted them. The introduction of fast torpedo boats in the late 19th century was a serious concern to the era's naval strategists, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dredger
Dredging is the excavation of material from a water environment. Possible reasons for dredging include improving existing water features; reshaping land and water features to alter drainage, navigability, and commercial use; constructing dams, dikes, and other controls for streams and shorelines; and recovering valuable mineral deposits or marine life having commercial value. In all but a few situations the excavation is undertaken by a specialist floating plant, known as a dredger. Usually the main objectives of dredging is to recover material of value, or to create a greater depth of water. Dredging systems can either be shore-based, brought to a location based on barges, or built into purpose-built vessels. Dredging can have environmental impacts: it can disturb marine sediments, creating dredge plumes which can lead to both short- and long-term water pollution, damage or destroy seabed ecosystems, and release legacy human-sourced toxins captured in the sediment. Thes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Home Port
A vessel's home port is the port at which it is based, which may not be the same as its port of registry shown on its registration documents and lettered on the stern of the ship's hull. In the cruise industry the term "home port" is also often used in reference to the port in which a ship will take on / change over the majority of its passengers while taking on stores, supplies and fuel. Navy In a navy A navy, naval force, military maritime fleet, war navy, or maritime force is the military branch, branch of a nation's armed forces principally designated for naval warfare, naval and amphibious warfare; namely, lake-borne, riverine, littoral z ..., a ship's ''home port'' is the port best suited to provide maintenance and restock weaponry particular to ships of that class and build. On conclusion of a tour of duty, a combat vessel returning to port will usually return to its ''home port''. A single home port also makes it easier for family to visit sailors Leave (militar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cylinder (engine)
In an engine, the cylinder is the space in which a piston travels. The inner surface of the cylinder is formed from either a thin metallic liner (also called "sleeve") or a surface coating applied to the engine block. A piston is seated inside each cylinder by several metal piston rings, which also provide seals for compression and the lubricating oil. The piston rings do not actually touch the cylinder walls, instead they ride on a thin layer of lubricating oil. Steam engines The cylinder in a steam engine is made pressure-tight with end covers and a piston; a valve distributes the steam to the ends of the cylinder. Cylinders were cast in cast iron and later in steel. The cylinder casting can include other features such as valve ports and mounting feet. Internal combustion engines The cylinder is the space through which the piston travels, propelled by the energy generated from the combustion of the air/fuel mixture in the combustion chamber. In an air-cooled e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deadweight Tonnage
Deadweight tonnage (also known as deadweight; abbreviated to DWT, D.W.T., d.w.t., or dwt) or tons deadweight (DWT) is a measure of how much weight a ship can carry. It is the sum of the weights of cargo, fuel, fresh water Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salt (chemistry), salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include ..., ballast water, provisions, passengers, and crew. DWT is often used to specify a ship's maximum permissible deadweight (i.e. when it is fully loaded so that its Plimsoll line is at water level), although it may also denote the actual DWT of a ship not loaded to capacity. Definition Deadweight tonnage is a measure of a vessel's weight carrying capacity, not including the empty weight of the ship. It is distinct from the displacement (weight of water displaced), which includes the ship's own weight, or the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leda (mythology)
In Greek mythology, Leda (; Ancient Greek: Λήδα ), also rendered Lede, was an Aetolian princess who became queen consort of Sparta through her marriage to King Tyndareus. Zeus fell in love with Leda, and to avoid his wife Hera's jealousy, raped her while disguised as a swan. Leda was named as the mother of four famous children in Greek mythology: Helen of Troy, Clytemnestra, and the twins Castor and Pollux. Leda and the Swan was a popular motif in the visual arts, particularly during the Renaissance. Family Leda is most commonly named as a daughter of the Aetolian king Thestius,Apollodorus, ''Library''3.10/ref>Euripides, ''Iphigenia in Aulis''49/ref> son of Ares, and was occasionally referred to as Thestias. Her mother is disputed, and could have been Leucippe,Hyginus, ''Fabulae''14.3/ref> Deidameia, daughter of Perieres, Eurythemis, daughter of Cleoboea,Apollodorus, ''Library''1.7.10/ref> or Laophonte, daughter of Pleuron.Alcman, fr .15 as cited in Scholia on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zeus
Zeus (, ) is the chief deity of the List of Greek deities, Greek pantheon. He is a sky father, sky and thunder god in ancient Greek religion and Greek mythology, mythology, who rules as king of the gods on Mount Olympus. Zeus is the child of Cronus and Rhea (mythology), Rhea, the youngest of his siblings to be born, though sometimes reckoned the eldest as the others required disgorging from Cronus's stomach. In most traditions, he is married to Hera, by whom he is usually said to have fathered Ares, Eileithyia, Hebe (mythology), Hebe, and Hephaestus.Hard 2004p. 79 At the oracle of Dodona, his consort was said to be Dione (Titaness/Oceanid), Dione, by whom the ''Iliad'' states that he fathered Aphrodite. According to the ''Theogony'', Zeus's first wife was Metis (mythology), Metis, by whom he had Athena.Hesiod, ''Theogony'886900 Zeus was also infamous for his erotic escapades. These resulted in many divine and heroic offspring, including Apollo, Artemis, Hermes, Persephone, D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Castor And Pollux
Castor and Pollux (or Polydeuces) are twin half-brothers in Greek and Roman mythology, known together as the Dioscuri or Dioskouroi. Their mother was Leda, but they had different fathers; Castor was the mortal son of Tyndareus, the king of Sparta, while Pollux was the divine son of Zeus, who seduced Leda in the guise of a swan. The pair are thus an example of heteropaternal superfecundation. Though accounts of their birth are varied, they are sometimes said to have been born from an egg, along with their twin sisters Helen of Troy and Clytemnestra. In Latin, the twins are also known as the Gemini ("twins") or Castores, as well as the Tyndaridae or Tyndarids. Pollux asked Zeus to let him share his own immortality with his twin to keep them together, and they were transformed into the constellation Gemini. The pair were regarded as the patrons of sailors, to whom they appeared as St. Elmo's fire. They were also associated with horsemanship, in keeping with their origin as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elbląg
Elbląg (; ; ) is a city in the Warmian-Masurian Voivodeship, in northern Poland, located in the eastern edge of the Żuławy region with 127,390 inhabitants, as of December 2021. It is the capital of Elbląg County. Elbląg is one of the oldest cities in the province. Its history dates back to 1237, when the Teutonic Order constructed their fortified stronghold on the banks of a nearby river. The castle subsequently served as the official seat of the Teutonic Order Masters. Elbląg became part of the Hanseatic League, which contributed much to the city's wealth. Through the Hanseatic League, the city was linked to other major ports like Gdańsk, Lübeck and Amsterdam. Elbląg joined Poland in 1454 and after the defeat of the Teutonic Knights in the Thirteen Years’ War was recognized as part of Poland in 1466. It then flourished and turned into a significant trading point, but its growth was eventually hindered by the Second Northern War and the Swedish Deluge. The city ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gdańsk
Gdańsk is a city on the Baltic Sea, Baltic coast of northern Poland, and the capital of the Pomeranian Voivodeship. With a population of 486,492, Data for territorial unit 2261000. it is Poland's sixth-largest city and principal seaport. Gdańsk lies at the mouth of the Motława River and is situated at the southern edge of Gdańsk Bay, close to the city of Gdynia and the resort town of Sopot; these form a metropolitan area called the Tricity, Poland, Tricity (''Trójmiasto''), with a population of approximately 1.5 million. The city has a complex history, having had periods of Polish, German and self rule. An important shipbuilding and trade port since the Middle Ages, between 1361 and 1500 it was a member of the Hanseatic League, which influenced its economic, demographic and #Architecture, urban landscape. It also served as Poland's principal seaport and was its largest city since the 15th century until the early 18th century when Warsaw surpassed it. With the Partition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bay Of Puck
The Bay of Puck or Puck Bay (; ; ), is a shallow western branch of the Bay of Gdańsk in the southern Baltic Sea, off the shores of Gdańsk Pomerania, Poland. It is separated from the open sea by the Hel Peninsula. The bay has an average depth of to . There is a shallow sand-bank from Rewa to Kuźnica in the middle of Hel Peninsula. The bay is available only for small fishing boats and yachts, which have to stick to the strict deeper routes. There are deposits of potassium salt below the Bay of Puck. The main ports are Puck, Jastarnia, and Hel. The name has nothing to do with the sport of ice hockey. In Polish the word "puck" doesn't mean anything, and the sport is popular only in the southern part of the country, opposite to the coast. Image:Hel peninsula landsat.jpg, Bay of Puck and Hel Peninsula as seen from Landsat satellite in 2000 Image:Hel Peninsula and Bay of Puck.png, Towns of Puck Bay and Hel Peninsula Geography Rivers * Gizdepka * Płutnica See also * *Spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
