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Foca-class Submarine (Brazil)
The ''Foca'' class, or simply F, was the first naval class of submarines operated by the Brazilian Navy. It consisted of the ''F1'', ''F3'' and ''F5'' submarines designed by Italian naval engineer Cesare Laurenti and built in La Spezia, Italy. The name ''Foca'' comes from the Portuguese vessel of the class. The class was part of Brazil's 1906 naval program to acquire warships to modernize its navy. The submarines were acquired to serve as a training and maintenance platform for the crews, with few naval actions during the 19 years they were active. The navy incorporated the class on 17 July 1914 and, as a result, expanded its naval structure to house these new vessels, such as the creation of the first naval school for submariners and the incorporation of ships designed to support submarines only. The Brazilian Navy was outdated in a period when the country wanted to be among the world powers of the time. At first, the acquisition of submarine means was left aside, as the governme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and Autonomous underwater vehicle, robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as ''boats'' rather than ''ships'' irrespective of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and they were adopted by several navies. They were first widely used during World War I (1914–1918), and are now used in many navy, navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, Blockade runner, blockade running, Ballistic missile submarine, nuclear deterrence, reconnaissance, conventio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ampere
The ampere (, ; symbol: A), often shortened to amp,SI supports only the use of symbols and deprecates the use of abbreviations for units. is the unit of electric current in the International System of Units (SI). One ampere is equal to electrons worth of charge moving past a point in a second. It is named after French mathematician and physicist André-Marie Ampère (1775–1836), considered the father of electromagnetism along with Danish physicist Hans Christian Ørsted. As of the 2019 redefinition of the SI base units, the ampere is defined by fixing the elementary charge to be exactly C ( coulomb), which means an ampere is an electrical current equivalent to elementary charges moving every seconds or elementary charges moving in a second. Prior to the redefinition the ampere was defined as the current that would need to be passed through 2 parallel wires 1 metre apart to produce a magnetic force of newtons per metre. The earlier CGS system had two definitio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Villegagnon Island
Villegagnon Island (former Serigipe Island—original Portuguese: ''Ilha de Villegagnon''—also known in English as: Villegaignon Island, Island of Villegagnon or Island of Villegaignon) is located near the mouth of the large Guanabara Bay, in the city of Rio de Janeiro, Brazil. History The island's name was given in honor of its first European occupier, the French admiral Nicolas Durand de Villegaignon, whose troops occupied the island in 1555, consequently building Fort Coligny on the island when attempting to establish the France Antarctique colony. With the arrival of more Portuguese troops from the São Vicente ''Capitania'' on March 15, 1560, Villegagnon Island became the stage for the attack from the Portuguese army commanded by Mem de Sá, who deployed his troops on the island. Two days later the French abandoned the fort looking for refuge with the Tamoios, a native tribe from Brazil. The fort was destroyed and on March 17, 1560 the first Portuguese mass was celebra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval School (Brazil)
The Naval School ( pt, Escola Naval, EN) is a higher education military academy which aims to train officers for the Brazilian Navy. It is located in Rio de Janeiro, on Villegagnon Island just inside of Guanabara Bay. History The Brazilian Naval School has its direct origins in the Portuguese Royal Naval Academy created in Lisbon, Portugal in the 18th century. In 1782, the Company of Midshipmen (''Companhia dos Guardas-Marinhas'') was created to frame and train the midshipmen (naval officer candidates) of the Portuguese Navy. The Company of Midshipmen was installed in the building of the Naval Arsenal of Lisbon. The Royal Academy of the Midshipmen (''Academia Real dos Guardas-Marinhas'') was created in 1792, as a university-level naval academy. This Academy integrated the already existing Company of Midshipmen as its student corps. In 1807, the Army of Napoleon invaded Portugal. In order not to be captured by the Napoleonic forces and maintain the independence of the Kingdo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazilian Submarine Humaytá
''Humaytá'' was a modified built in Italy for the Brazilian Navy. The submarine was laid down by Odero-Terni-Orlando at La Spezia on 19 November 1925, launched on 11 June 1927, and handed over to the Brazilian Navy on 11 June 1929. Proceeds from the sale of the '' Marshal Deodoro'' to the Mexican Navy provided funds for ''Humaytá''s purchase. ''Humaytá'' was commissioned into the Brazilian Navy on 20 July 1929. She remained in Brazilian service through World War II and was decommissioned on 25 November 1950. See also * List of submarines of the Second World War This is a list of submarines of World War II, which began with the German invasion of Poland on 1 September 1939 and ended with the surrender of Japan on 2 September 1945. Germany used submarines to devastating effect in the Battle of the At ... References {{DEFAULTSORT:Humayta Balilla-class submarines of the Brazilian Navy Ships built in La Spezia Ships built by OTO Melara 1927 ships World War I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cabo Frio
Cabo Frio (, ''Cold Cape'') is a tourist destination located in the state of Rio de Janeiro state. It was founded by the Portuguese on November 13, 1615. The Brazilian coast runs east from Rio de Janeiro to Cabo Frio where it turns sharply north. North of Cabo Frio is Cabo de São Tomé. It was named after the region where it's located, a peninsula or Cape (geography) and the water temperature is colder than in nearby cities (''frio'' is Portuguese for "cold"). This city features beaches with white fine sand, since it doesn't have mica the sand doesn't get hot and you can walk on it with bare feet without getting burnt. , Cabo Frio's estimated population is 230,378 and its area is 410 km². Cabo Frio is served by Cabo Frio International Airport Cabo Frio International Airport is the airport serving Cabo Frio, Brazil. The airport is operated by Aeropart. History The airport was built by the government of the state of Rio de Janeiro in partnership with the Brazilian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Niterói
Niterói (, ) is a Municipalities of Brazil, municipality of the state of Rio de Janeiro (state), Rio de Janeiro in the Southeast Region, Brazil, southeast region of Brazil. It lies across Guanabara Bay facing the city of Rio de Janeiro and forms part of the Rio de Janeiro Metropolitan Area. It was the state capital, as marked by its golden mural crown, from 1834 to 1894 and again from 1903 to 1975. It has an estimated population of 515,317 inhabitants (2020) and an area of , making it the fifth most populous city in the state. It has the highest Human Development Index of the state and the seventh highest among Brazil's municipalities in 2010. Individually, it is the second municipality with the highest average monthly household income per capita in Brazil and appears in 13th place among the municipalities of the country according to social indicators related to education. The city has the nicknames of Nikiti, Nicki City and the Smile City ''(Cidade Sorriso').'' Studies by the Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dreadnought
The dreadnought (alternatively spelled dreadnaught) was the predominant type of battleship in the early 20th century. The first of the kind, the Royal Navy's , had such an impact when launched in 1906 that similar battleships built after her were referred to as "dreadnoughts", and earlier battleships became known as pre-dreadnoughts. Her design had two revolutionary features: an "all-big-gun" armament scheme, with an unprecedented number of heavy-calibre guns, and steam turbine propulsion. As dreadnoughts became a crucial symbol of national power, the arrival of these new warships renewed the naval arms race between the United Kingdom and Germany. Dreadnought races sprang up around the world, including in South America, lasting up to the beginning of World War I. Successive designs increased rapidly in size and made use of improvements in armament, armour and propulsion throughout the dreadnought era. Within five years, new battleships outclassed ''Dreadnought'' herself. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Holland-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] |
Arsenal De Marinha Do Rio De Janeiro
The Arsenal de Marinha do Rio de Janeiro (AMRJ) is a military organization of the Brazilian Navy. It is located in Ilha das Cobras, at the Guanabara Bay, in the city of Rio de Janeiro. The Arsenal is the main maintenance center and naval base of the Brazilian Navy, involving the design, construction and maintenance of ships and submarines, not only for the Brazilian Navy, but also friendly nations. The AMRJ provides shipbuilding services both for military strategic reasons (mastery of technologies, seeking the reduction of external dependence), as economic ones, seeking nationalisation of components and the encouragement of domestic industry. History The institution dates back to the installation of the Arsenal of Rio de Janeiro, at the foot of the hill of St. Benedict. Created on 29 December 1763, by the governor-general of Brazil António Álvares da Cunha, the first Count da Cunha, with the purpose of repairing ships of the Portuguese Navy. At the time, the capital of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
