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Italian Submarine Macallé
Italian submarine ''Macallé'' was an built for the Royal Italian Navy (''Regia Marina'') during the 1930s. It was named after a town of Mek'ele in Ethiopia. Design and description The ''Adua''-class submarines were an evolution of the preceding . They displaced surfaced and submerged. The submarines were long, had a beam of and a draft of .Chesneau, pp. 309–10 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 ''Adua'' class had a range of at , submerged, they had a range of at .Bagnasco, p. 154 The boats were armed with six internal torpedo tubes, four in the bow and two in the stern. They were also armed with one deck gun for combat on the surface. The light anti-aircraft armament consisted of one or two pairs of machine guns. Construction and career ''Macallé'' was launched on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kingdom Of Italy
The Kingdom of Italy ( it, Regno d'Italia) was a state that existed from 1861, when Victor Emmanuel II of Sardinia was proclaimed King of Italy, until 1946, when civil discontent led to an institutional referendum to abandon the monarchy and form the modern Italian Republic. The state resulted from a decades-long process, the '' Risorgimento'', of consolidating the different states of the Italian Peninsula into a single state. That process was influenced by the Savoy-led Kingdom of Sardinia, which can be considered Italy's legal predecessor state. Italy declared war on Austria in alliance with Prussia in 1866 and received the region of Veneto following their victory. Italian troops entered Rome in 1870, ending more than one thousand years of Papal temporal power. Italy entered into a Triple Alliance with the German Empire and the Austro-Hungarian Empire in 1882, following strong disagreements with France about their respective colonial expansions. Although relations wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draft (hull)
The draft or draught of a ship's hull is the vertical distance between the waterline and the bottom of the hull ( keel). The draught of the vessel is the maximum depth of any part of the vessel, including appendages such as rudders, propellers and drop keels if deployed. Draft determines the minimum depth of water a ship or boat can safely navigate. The related term air draft is the maximum height of any part of the vessel above the water. The more heavily a vessel is loaded, the deeper it sinks into the water, and the greater its draft. After construction, the shipyard creates a table showing how much water the vessel displaces based on its draft and the density of the water (salt or fresh). The draft can also be used to determine the weight of cargo on board by calculating the total displacement of water, accounting for the content of the ship's bunkers, and using Archimedes' principle. The closely related term "trim" is defined as the difference between the forward and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver Medal Of Military Valor
The Silver Medal of Military Valor ( it, Medaglia d'argento al valor militare) is an Italian medal for gallantry. Italian medals for valor were first instituted by Victor Amadeus III of Sardinia on 21 May 1793, with a gold medal, and, below it, a silver medal. These were intended for junior officers or common soldiers who had distinguished themselves in combat. These medals fell into disuse during the period of Napoleonic domination. They were reinstated on 1 April 1815, by Victor Emmanuel I of Sardinia, who, however, abolished them only a few months later, on 4 August 1815, replacing them with the Military Order of Savoy (l'Ordine militare di Savoia), now known as the Military Order of Italy. However, in 1833, Charles Albert of Sardinia, recognizing that the Military Order was too exclusive in that it could only be awarded to persons of high rank, re-instituted the medals for valor (gold and silver) as awards for noble acts performed by soldiers in both war and peace. Accor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Savoia-Marchetti SM
SIAI-Marchetti was an Italian aircraft manufacturer primarily active during the interwar period. History The original company was founded during 1915 as SIAI (''Società Idrovolanti Alta Italia'' - Seaplane Company of Upper Italy). As suggested by its name, the firm initially specialised in the manufacture of seaplanes, the vast majority of which were intended for the Italian armed forces. Perhaps its most prominent early aircraft was the SIAI S.16, a seaplane that had been configured to perform both aerial reconnaissance and bomber roles, but also proved itself quite capable of long-distance flights. During 1925, Italian aviator Francesco de Pinedo of the ''Regia Aeronautica'' (Italian Royal Air Force) used an SIAI S.16''ter'' he named ''Genariello'' for a record-setting flight from Rome to Australia and Tokyo to demonstrate his idea that seaplanes were superior to landplanes for long-distance flights. Having departed Rome on 21 April, Pinedo and his mechanic, Ernesto Campanelli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sudan
Sudan ( or ; ar, السودان, as-Sūdān, officially the Republic of the Sudan ( ar, جمهورية السودان, link=no, Jumhūriyyat as-Sūdān), is a country in Northeast Africa. It shares borders with the Central African Republic to the southwest, Chad to the west, Egypt to the north, Eritrea to the northeast, Ethiopia to the southeast, Libya to the northwest, South Sudan to the south and the Red Sea. It has a population of 45.70 million people as of 2022 and occupies 1,886,068 square kilometres (728,215 square miles), making it Africa's List of African countries by area, third-largest country by area, and the third-largest by area in the Arab League. It was the largest country by area in Africa and the Arab League until the 2011 South Sudanese independence referendum, secession of South Sudan in 2011, since which both titles have been held by Algeria. Its Capital city, capital is Khartoum and its most populated city is Omdurman (part of the metropolitan area of Khar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chloromethane
Chloromethane, also called methyl chloride, Refrigerant-40, R-40 or HCC 40, is an organic compound with the chemical formula . One of the haloalkanes, it is a colorless, odorless, flammable gas. Methyl chloride is a crucial reagent in industrial chemistry, although it is rarely present in consumer products, and was formerly utilized as a refrigerant. Occurrence Chloromethane is an abundant organohalogen, anthropogenic or natural, in the atmosphere. Marine Laboratory cultures of marine phytoplankton (''Phaeodactylum tricornutum'', ''Phaeocystis'' sp., ''Thalassiosira weissflogii'', ''Chaetoceros calcitrans'', ''Isochrysis'' sp., ''Porphyridium'' sp., ''Synechococcus'' sp., ''Tetraselmis'' sp., ''Prorocentrum'' sp., and ''Emiliana huxleyi'') produce CH3Cl, but in relatively insignificant amounts. An extensive study of 30 species of polar macroalgae revealed the release of significant amounts of CH3Cl in only ''Gigartina skottsbergii'' and ''Gymnogongrus antarcticus''. Biogenesis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celestial Navigation
Celestial navigation, also known as astronavigation, is the practice of position fixing using stars and other celestial bodies that enables a navigator to accurately determine their actual current physical position in space (or on the surface of the Earth) without having to rely solely on estimated positional calculations, commonly known as " dead reckoning", made in the absence of satellite navigation or other similar modern electronic or digital positioning means. Celestial navigation uses "sights", or timed angular measurements, taken typically between a celestial body (e.g. the Sun, the Moon, a planet, or a star) and the visible horizon. Celestial navigation can also take advantage of measurements between celestial bodies without reference to the Earth horizon, such as when the Moon and other selected bodies are used in the practice called "lunars" or lunar distance method, used for determining precise time when time is unknown. Celestial navigation by taking sights ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Port Sudan
Port Sudan ( ar, بور سودان, Būr Sūdān) is a port city in eastern Sudan, and the capital of the state of Red Sea. , it has 489,725 residents. Located on the Red Sea, Port Sudan is recognized as Sudan's main seaport and the source of 90% of the country's international trade. History Port Sudan was built between 1905 and 1909 by the administration of Anglo-Egyptian Sudan to replace Suakin. An oil pipeline was built between the port and Khartoum in 1977. In 2009, Israel allegedly used naval commandos to attack Iranian arms ships at Port Sudan as part of Operation Birds of Prey. In 2020, Russian president Vladimir Putin announced that the Russian Navy would begin construction on a base with capacity for 300 personnel and four warships in Port Sudan. The facility would prove Russia with a naval base in the nation for at least 25 years. The plan was ultimately suspended, though Sudanese leadership indicated that it is possible for the construction to go forward in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Sea Flotilla
The Red Sea Flotilla (''Flottiglia del mar rosso'') was part of the ''Regia Marina Italia'' (Italian Royal Navy) based at Massawa in the colony of Italian Eritrea, part of Italian East Africa. During World War II, the Red Sea Flotilla was active against the East Indies Station of the Royal Navy from the Italian declaration of war on 10 June 1940 until the fall of Massawa on 8 April 1941. The squadron was isolated from the main Italian bases in the Mediterranean by distance and British dispositions. The British capture of Massawa and other Italian ports in the region ended the Italian naval presence in the region in April 1941. Purpose and organisation On 10 June 1940, the Red Sea Flotilla had seven destroyers in two squadrons, a squadron of five Motor Torpedo Boats (MAS, ''Motoscafo Armato Silurante'') and eight submarines in two squadrons. The main base was at Massawa, with other bases at Assab (also in Eritrea) and Kismayu, in southern Italian Somaliland. The Red Sea Flo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Massawa
Massawa ( ; ti, ምጽዋዕ, məṣṣəwaʿ; gez, ምጽዋ; ar, مصوع; it, Massaua; pt, Maçuá) is a port city in the Northern Red Sea region of Eritrea, located on the Red Sea at the northern end of the Gulf of Zula beside the Dahlak Archipelago.Matt Phillips, Jean-Bernard Carillet, ''Lonely Planet Ethiopia and Eritrea'', (Lonely Planet: 2006), p.340. It has been a historically important port for many centuries. Massawa was the capital of the Italian Colony of Eritrea until the seat of the colonial government was moved to Asmara in 1897. Massawa has an average temperature of nearly , which is one of the highest experienced in the world, and is "one of the hottest marine coastal areas in the world." History Massawa was originally a small seaside village, lying in lands coextensive with the Kingdom of Axum—also known as Kingdom of Zula in antiquity—and overshadowed by the nearby port of Adulis about to the south. Massawa has been ruled or occupied by a suc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spanish Civil War
The Spanish Civil War ( es, Guerra Civil Española)) or The Revolution ( es, La Revolución, link=no) among Nationalists, the Fourth Carlist War ( es, Cuarta Guerra Carlista, link=no) among Carlism, Carlists, and The Rebellion ( es, La Rebelión, link=no) or The Uprising ( es, La Sublevación, link=no) among Republicans. was a civil war in Spain fought from 1936 to 1939 between the Republican faction (Spanish Civil War), Republicans and the Nationalist faction (Spanish Civil War), Nationalists. Republicans were loyal to the left-leaning Popular Front (Spain), Popular Front government of the Second Spanish Republic, and consisted of various socialist, communist, separatist, anarchist, and Republicanism in Spain, republican parties, some of which had opposed the government in the pre-war period. The opposing Nationalists were an alliance of Falangism, Falangists, monarchists, conservatives, and Traditionalism (Spain), traditionalists led by a National Defense Junta, military junt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naples
Naples (; it, Napoli ; nap, Napule ), from grc, Νεάπολις, Neápolis, lit=new city. is the regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 909,048 within the city's administrative limits as of 2022. Metropolitan City of Naples, Its province-level municipality is the third-most populous Metropolitan cities of Italy, metropolitan city in Italy with a population of 3,115,320 residents, and Naples metropolitan area, its metropolitan area stretches beyond the boundaries of the city wall for approximately 20 miles. Founded by Greeks in the 1st millennium BC, first millennium BC, Naples is one of the oldest continuously inhabited urban areas in the world. In the eighth century BC, a colony known as Parthenope ( grc, Παρθενόπη) was established on the Pizzofalcone hill. In the sixth century BC, it was refounded as Neápolis. The city was an important part of Magna Graecia, played a major role in the merging ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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