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Italian R-class Submarine
The R-class or ''Romolo''-class submarine was a group of submarines built for the Royal Italian Navy (''Regia Marina Italiana'') during World War II. They were designed as blockade running transport submarines for transporting high-value cargo from Europe to Japan and vice versa. Axis-occupied Europe lacked strategic materials such as tungsten, tin and some commodities such as rubber. Design and description The R-class submarines displaced surfaced and submerged. The submarines were long, had a beam of and a draft of . They had a cargo capacity of . Chesneau, p. 307 For surface running, the boats were powered by two diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a electric motor. They could reach on the surface and underwater. On the surface, the R class had a range of at ; submerged, they had a range of at .Bagnasco, p. 166 The boats were only armed for self-defense with three light anti-aircraft guns. Some boats may ...
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Merchant Submarine
A merchant submarine is a type of submarine intended for trade, and being without armaments, it is not considered a warship like most other types of submarines. The intended use would be blockade running, or to dive under Arctic ice. Strictly speaking, only two submarines have so far been purpose-built for non-military merchant shipping use, outside of criminal enterprises, though standard or partly converted military submarines have been used to transport smaller amounts of important cargo, especially during wartime, and large-scale proposals for modern merchant submarines have been produced by manufacturers. Criminal enterprises have also built transport submarines to avoid authorities, such as narcosubs. Germany Only two merchant submarines were built, both in Germany during World War I. They were constructed to slip through the naval blockade of the Entente Powers, mainly enforced by the efforts of the United Kingdom's Royal Navy. The British blockade had led to great di ...
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Displacement (ship)
The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into weight. Traditionally, various measurement rules have been in use, giving various measures in long tons. Today, tonnes are more commonly used. Ship displacement varies by a vessel's degree of load, from its empty weight as designed (known as "lightweight tonnage") to its maximum load. Numerous specific terms are used to describe varying levels of load and trim, detailed below. Ship displacement should not be confused with measurements of volume or capacity typically used for commercial vessels and measured by tonnage: net tonnage and gross tonnage. Calculation The process of determining a vessel's displacement begins with measuring its draft.George, 2005. p. 5. This is accomplished by means of its "draft marks". A merchant vessel has t ...
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World War II Submarines Of Italy
The world is the totality of entities, the whole of reality, or everything that exists. The nature of the world has been conceptualized differently in different fields. Some conceptions see the world as unique, while others talk of a "plurality of worlds". Some treat the world as one simple object, while others analyze the world as a complex made up of parts. In scientific cosmology, the world or universe is commonly defined as "the totality of all space and time; all that is, has been, and will be". Theories of modality talk of possible worlds as complete and consistent ways how things could have been. Phenomenology, starting from the horizon of co-given objects present in the periphery of every experience, defines the world as the biggest horizon, or the "horizon of all horizons". In philosophy of mind, the world is contrasted with the mind as that which is represented by the mind. Theology conceptualizes the world in relation to God, for example, as God's creation, ...
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Italian R-class Submarines
Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, a Romance ethnic group related to or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance language *** Regional Italian, regional variants of the Italian language ** Languages of Italy, languages and dialects spoken in Italy ** Italian culture, cultural features of Italy ** Italian cuisine, traditional foods ** Folklore of Italy, the folklore and urban legends of Italy ** Mythology of Italy, traditional religion and beliefs Other uses * Italian dressing, a vinaigrette-type salad dressing or marination * Italian or Italian-A, alternative names for the Ping-Pong virus, an extinct computer virus * ''Italien'' (magazine), pro-Fascist magazine in Germany between 1927 and 1944 See also * * * Italia (other) * Italic (other) * Italo (other) * The Italian (other) * Italian people (other) Italian ...
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Submarine Classes
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 reco ...
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Gaeta
Gaeta (; ; Southern Latian dialect, Southern Laziale: ''Gaieta'') is a seaside resort in the province of Latina in Lazio, Italy. Set on a promontory stretching towards the Gulf of Gaeta, it is from Rome and from Naples. The city has played a conspicuous part in military history; its walls date to Ancient Rome, Roman times and were extended and strengthened in the 15th century, especially throughout the history of the Kingdom of Naples (later the Kingdom of the Two Sicilies). Present-day Gaeta is a fishing port and a renowned seaside resort. NATO has a naval base here. In 2025, it received the Blue Flag beach, blue and green flags from Foundation for Environmental Education, FEE for the twelfth consecutive year. It is one of the I Borghi più belli d'Italia ("The most beautiful villages of Italy"). History Ancient times Ancient Caieta was situated on the slopes of the Torre di Orlando, a promontory overlooking the Mediterranean Sea. It was inhabited by the Oscan language ...
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Italian Submarine Ambra
Italian submarine ''Ambra'' was a built for the Royal Italian Navy (''Regia Marina'') during the 1930s. She was named after the gemstone amber. Design and description The ''Perla''-class submarines were essentially repeats of the preceding . The modifications that were made compared to the boats of the previous series were mostly of upgrade nature. Among them were enlargement of the false tower at the top, more modern engines, installation of a radiogoniometer that could be controlled from inside the ship. Improvements and the installation of new air conditioning equipment meant a slight increase in displacement, and increase in the fuel stowage also increased the autonomy of these boats compared to the previous series.Pollina, p.155 Their designed full load displacement was surfaced and submerged, but varied somewhat depending on the boat and the builder. The submarines were long, had a beam of and a draft of to .Bagnasco, p. 153Pollina, pp.152-153 For surface running, th ...
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Romulus
Romulus (, ) was the legendary founder and first king of Rome. Various traditions attribute the establishment of many of Rome's oldest legal, political, religious, and social institutions to Romulus and his contemporaries. Although many of these traditions incorporate elements of folklore, and it is not clear to what extent a historical figure underlies the mythical Romulus, the events and institutions ascribed to him were central to the myths surrounding Rome's origins and cultural traditions. Traditional account The myths concerning Romulus involve several distinct episodes and figures, including the miraculous birth and youth of Romulus and his twin brother, Remus; Remus' murder and the founding of Rome; the Rape of the Sabine Women, and the subsequent war with the Sabines; a period of joint rule with Titus Tatius; the establishment of various Roman institutions; the death or apotheosis of Romulus, and the succession of Numa Pompilius. Romulus and Remus According to ...
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Gulf Of Taranto
The Gulf of Taranto (; Tarantino: ; ) is a gulf of the Ionian Sea, in Southern Italy. The Gulf of Taranto is almost square, long and wide, making it the largest gulf in Italy, and it is delimited by the capes Santa Maria di Leuca (to the east, in Apulia) and Colonna (the ancient ''Lacinium'', to the west, in Calabria), encompassed by the three regions of Apulia, Basilicata and Calabria. The most important rivers are the Basento, the Sinni, and the Agri. The main cities on the gulf are Taranto and Gallipoli. Also the Greek colonies (Magna Graecia) of Kroton, Heraclea, Thurii, and Sybaris were founded on the Gulf of Taranto. Italy claims the whole gulf as national waters, thus closed to international traffic. This position, which is similar to that of Libya Libya, officially the State of Libya, is a country in the Maghreb region of North Africa. It borders the Mediterranean Sea to the north, Egypt to Egypt–Libya border, the east, Sudan to Libya–Sudan bor ...
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HMS United
HMS ''United'' (P44) was a Royal Navy U-class submarine built by Vickers-Armstrong at Barrow-in-Furness. So far she has been the only ship of the Royal Navy to bear the name ''United''. Career HMS ''United'' spent most of the war in the Mediterranean, where she sank the small Italian merchant , the Italian auxiliary submarine chaser V 39/''Giovanna'', the , the French merchant ''Ste Marguerite'' (the former Norwegian ''Ringulv''), and the Italian merchant ''Olbia''. Whilst covering the Allied invasion of Sicily The Allied invasion of Sicily, also known as the Battle of Sicily and Operation Husky, was a major campaign of World War II in which the Allies of World War II, Allied forces invaded the island of Sicily in July 1943 and took it from the Axis p ..., ''United'' spotted the Italian transport submarine ''Remo'' on the surface. She launched four torpedoes, one of which hit the ''Remo'' amidships, sinking her within a few minutes. Only four survived, the three who we ...
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Anti-aircraft Gun
Anti-aircraft warfare (AAW) is the counter to aerial warfare and includes "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It encompasses surface-based, subsurface ( submarine-launched), and air-based weapon systems, in addition to associated sensor systems, command and control arrangements, and passive measures (e.g. barrage balloons). It may be used to protect naval, ground, and air forces in any location. However, for most countries, the main effort has tended to be homeland defense. Missile defense is an extension of air defence, as are initiatives to adapt air defence to the task of intercepting any projectile in flight. Most modern anti-aircraft (AA) weapons systems are optimized for short-, medium-, or long-range air defence, although some systems may incorporate multiple weapons (such as both autocannons and surface-to-air missiles). 'Layered air defence' usually refers to multiple 'tiers' of air defence systems which, w ...
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