Rivadavia-class Battleship
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The ''Rivadavia'' class consisted of two
battleship A battleship is a large, heavily naval armour, armored warship with a main battery consisting of large naval gun, guns, designed to serve as a capital ship. From their advent in the late 1880s, battleships were among the largest and most form ...
s designed by the American Fore River Shipbuilding Company for the
Argentine Navy The Argentine Navy (ARA; ). This forms the basis for the navy's ship prefix "ARA". is the navy of Argentina. It is one of the three branches of the Armed Forces of the Argentine Republic, together with the Argentine Army, Army and the Argentine ...
. Named and after important figures in Argentine history, they were Argentina's entry in the
South American dreadnought race A naval arms race among Argentina, Brazil, and Chile—the ABC countries, wealthiest and most powerful countries in South America—began in the early twentieth century when the Brazilian government ordered three dreadnoughts, formidable battl ...
and a counter to Brazil's two s. In 1904, Brazil scrapped a previous naval building program in favor of an order that included three warships of the new "
dreadnought The dreadnought was the predominant type of battleship in the early 20th century. The first of the kind, the Royal Navy's , had such an effect when launched in 1906 that similar battleships built after her were referred to as "dreadnoughts", ...
" type, despite signs that such an action would spark a South American naval arms race. To counter this acquisition by a major rival, Argentina began seeking bids for at least two dreadnoughts in 1908. Over the next two years, shipbuilders from five countries vied for the contracts, complemented by efforts from their respective governments. Argentina was able to play this hyper-competitive environment to its own advantage by rejecting all of the initial proposals and calling for new ones that required the best aspects of each. They then repeated this process, despite complaints from shipbuilders that their trade secrets were being given away. The contracts were awarded to the lowest bidder, Fore River, in early 1910. This move shocked the European bidders, but could partly be explained by the American steel trust's ability to produce steel at a lower cost than any other country. With increasing tensions in Europe that would eventually lead to the
First World War World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
, newspapers speculated that the Argentine dreadnoughts would be sold to another country. Under diplomatic pressure, Argentina kept the ships. Throughout their careers, ''Rivadavia'' and ''Moreno'' were based in Puerto Belgrano and served principally as
training ship A training ship is a ship used to train students as sailors. The term is mostly used to describe ships employed by navies to train future officers. Essentially there are two types: those used for training at sea and old hulks used to house class ...
s and diplomatic envoys. They were modernized in the United States in 1924 and 1925 and were inactive for much of the
Second World War World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
due to Argentina's neutrality.
Struck Struck is a surname. Notable people with the surname include: *Adolf Struck Adolf Hermann Struck (1877–1911) was a German sightseer and writer. He is known for his Travel literature, travelogue ''Makedonische Fahrten'' and for surveying the ...
from the navy lists on 1 February 1957, ''Rivadavia'' was scrapped in Italy beginning in 1959. ''Moreno'' was struck on 1 October 1956 and was towed to Japan in 1957 for scrapping.


Background

The ''raison d'être'' for the ''Rivadavia'' class can be traced back to Argentine–Chilean territorial disputes over the boundary of
Patagonia Patagonia () is a geographical region that includes parts of Argentina and Chile at the southern end of South America. The region includes the southern section of the Andes mountain chain with lakes, fjords, temperate rainforests, and glaciers ...
and control of the
Beagle Channel Beagle Channel (; Yahgan language, Yahgan: ''Onašaga'') is a strait in the Tierra del Fuego, Tierra del Fuego Archipelago, on the extreme southern tip of South America between Chile and Argentina. The channel separates the larger main island of I ...
going back to the 1840s. It nearly led to war in 1878 and kindled a naval arms race from 1887 to 1902 which was only settled via British mediation. As part of the three pacts which ended the dispute, restrictions were placed on the navies of both countries. The British
Royal Navy The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom ...
bought two
pre-dreadnought Pre-dreadnought battleships were sea-going battleships built from the mid- to late- 1880s to the early 1900s. Their designs were conceived before the appearance of in 1906 and their classification as "pre-dreadnought" is retrospectively appl ...
battleships that were being built for Chile, and Argentina sold its two ''Rivadavia''-class
armored cruiser The armored cruiser was a type of warship of the late 19th and early 20th centuries. It was designed like other types of cruisers to operate as a long-range, independent warship, capable of defeating any ship apart from a pre-dreadnought battles ...
s under construction in Italy to Japan. Meanwhile, beginning in the late 1880s, Brazil's navy fell into obsolescence after an 1889 revolution, which deposed
Emperor The word ''emperor'' (from , via ) can mean the male ruler of an empire. ''Empress'', the female equivalent, may indicate an emperor's wife (empress consort), mother/grandmother (empress dowager/grand empress dowager), or a woman who rules ...
Dom Pedro II, and a 1893 civil war. By the turn of the 20th century it was lagging behind the Chilean and Argentine navies in quality and total tonnage, despite Brazil having nearly three times the population of Argentina and almost five times the population of Chile. By 1904, however, Brazil began to seriously consider upgrading its navy to compete with Argentina and Chile. Soaring demand for coffee and
rubber Rubber, also called India rubber, latex, Amazonian rubber, ''caucho'', or ''caoutchouc'', as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds. Types of polyisoprene ...
brought the Brazilian economy an influx of revenue, which paid for a US$31.25 million naval repair scheme, a substantial amount for the time period. The bill authorized 28 ships, including three battleships and three armored cruisers. It was not possible to lay down the battleships until 1906, the same year the trend-setting was constructed. This ship prompted the Brazilians to cancel their battleship plans in favor of two
dreadnought The dreadnought was the predominant type of battleship in the early 20th century. The first of the kind, the Royal Navy's , had such an effect when launched in 1906 that similar battleships built after her were referred to as "dreadnoughts", ...
s. The ordering of these powerful ships—designed to carry the heaviest armament in the world at the time—shocked Argentina and Chile. Historian Robert Scheina comments that the dreadnoughts alone "outclassed the entire lderlyArgentinian fleet." Debates raged in Argentina over the wisdom of acquiring dreadnoughts to counter Brazil's. The National Autonomist Party cabinet was in favor, despite a probable cost of nearly $10 million, but a specific plan for two battleships and ten destroyers was not popular with the public. Alarmed, the American ambassador to Brazil sent a
cablegram Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message. Thus flag semaphore is a method of telegraphy, whereas pi ...
to his
Department of State The United States Department of State (DOS), or simply the State Department, is an executive department of the U.S. federal government responsible for the country's foreign policy and relations. Equivalent to the ministry of foreign affairs ...
, warning them of the destabilizing effects that would occur if the situation devolved into a full naval arms race. Despite American entreaties to preclude the naval arms race, Brazil continued development on the ships. This, combined with renewed border disputes, particularly in the River Plate (''Río de la Plata'', literally "Silver River") area, spurred Argentina to move forward with plans for their own battleships. Inflamed by newspaper editors, opinion had swung towards supporting a naval building program. While an early plan called for $35 million to be invested—$7 million from foreign loans—a $55 million plan was adopted in August 1908. Hoping to end the arms race, Argentina made an offer to purchase one of the two Brazilian ships, but the refusal prompted the dispatch of an Argentine naval commission to Europe to acquire dreadnoughts.


Bidding

Proposals from shipbuilders for two dreadnoughts (along with a possible third, to match Brazil should a third ship be ordered) and twelve destroyers were solicited in 1908 by open tender. In order to ensure that the designs reflected the most modern practices, the requirements were intentionally vague. Fifteen shipyards from the United States, Great Britain, Germany, France, and Italy began bidding on the battleships. Diplomatic pressure to give the contracts was brought to bear from all these countries, especially the first three.Livermore, "Battleship Diplomacy," 34. Even with this assistance, industry leaders in the United States believed that they had no chance in the bidding without active cooperation from their government, as Europe was the traditional arms supplier to Argentina (and to all of South America). Even when this was given, including the removal of import tariffs on hides from Argentina, promises for additional concessions if American shipbuilders were selected,Livermore, "Battleship Diplomacy," 36. and an offer to include the most technologically advanced
fire-control system A fire-control system (FCS) is a number of components working together, usually a gun data computer, a director and radar, which is designed to assist a ranged weapon system to target, track, and hit a target. It performs the same task as a hum ...
and
torpedo tube A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboa ...
s available on the Argentine battleships, the United States was widely viewed as a non-contender.Scheina, ''Latin America'', 83. Historian Seward W. Livermore remarked that "opposition to the United States was formidable. The naval commission was pro-British; the vice-president of the republic,
Roque Sáenz Peña Roque José Antonio del Sagrado Corazón de Jesús Sáenz-Peña (19 March 1851 – 9 August 1914) was an Argentine politician and lawyer who served as President of Argentina from 12 October 1910 to his death in office on 9 August 1914. He was th ...
, favored Italy, where he had been the Argentine envoy for many years; and the minister of war wanted the contracts to go to Germany, so as to standardize the military and naval equipment of the country." The president of the
Newport News Shipbuilding and Drydock Company Newport News Shipbuilding (NNS), a division of Huntington Ingalls Industries, is the sole designer, builder, and refueler of aircraft carriers and one of two providers of submarines for the United States Navy. Founded as the Chesapeake Dry Dock ...
believed that the United States would not receive contracts due to what he saw as a large amount of European meddling in Argentina: The United States, however, found an ally in Buenos Aires' main daily newspaper, '' La Prensa''. The owner, editor, and naval editor were all in favor of acquiring American-designed dreadnoughts. In addition, the paper found evidence of British wrongdoing in a related naval contract. Under public pressure, the naval commission was forced to reconsider its original list, which had placed Italy first and Britain second. It now featured the United States first, Britain second, and Italy last. In a surprise move, the Argentine naval commission then threw out all of the opening tenders and called for another round of bidding; they simultaneously updated the specifications to include what were judged to be the best aspects of all the plans. The competitors were given three weeks to come up with new designs and cost estimates. After diplomatic protests, this was modified slightly; the original bids were kept, but alterations to attempt to conform to the new desired characteristics were allowed.Livermore, "Battleship Diplomacy," 37. The commission found that the Newport News Shipbuilding and Drydock Company bid was lowest on one battleship, and the Fore River Shipbuilding Company was lowest on the other. Despite a British attempt to allow the
Armstrong Whitworth Sir W G Armstrong Whitworth & Co Ltd was a major British manufacturing company of the early years of the 20th century. With headquarters in Elswick, Tyne and Wear, Elswick, Newcastle upon Tyne, Armstrong Whitworth built armaments, ships, locomot ...
-
Vickers Vickers was a British engineering company that existed from 1828 until 1999. It was formed in Sheffield as a steel foundry by Edward Vickers and his father-in-law, and soon became famous for casting church bells. The company went public in 18 ...
team to lower their price by $570,000, prompt American diplomacy granting various assurances regarding recent events between the United States and Brazil, the upcoming 1910
Pan-American Conference The Conferences of American States, commonly referred to as the Pan-American Conferences, were meetings of the Pan-American Union, an international organization for Free trade agreement, cooperation on trade. James G. Blaine, a United States pol ...
, and a guarantee of American participation in the Argentine centennial celebrations secured the battleship contracts for Fore River on 21 January 1910.Livermore, "Battleship Diplomacy," 38. The maximum price Fore River tendered, $10.7 million, underbid the British by more than $973,000, but their ship's
displacement Displacement may refer to: Physical sciences Mathematics and physics *Displacement (geometry), is the difference between the final and initial position of a point trajectory (for instance, the center of mass of a moving object). The actual path ...
was smaller, the
belt armor Belt armor is a layer of heavy metal armor plated onto or within the outer hulls of warships, typically on battleships, battlecruisers and cruisers, and aircraft carriers. The belt armor is designed to prevent projectiles from penetrating to ...
was thinner, and the top speed was slightly lower.Alger, "Professional Notes," 595. Orders for the twelve destroyers were divided among Britain, France, and Germany. ''Rivadavia'' was built by Fore River at its shipyard in Massachusetts, but they were contractually obligated to
subcontract A subcontractor is a person or business which undertakes to perform part or all of the obligations of another's contract, and a subcontract is a contract which assigns part of an existing contract to a subcontractor. A general contractor, prime ...
the second ship to a different shipyard in the hope that both would be completed faster, so ''Moreno'' was constructed by the
New York Shipbuilding Corporation The New York Shipbuilding Corporation (or New York Ship for short) was an American shipbuilding company that operated from 1899 to 1968, ultimately completing more than 500 vessels for the U.S. Navy, the United States Merchant Marine, the United ...
of Camden, New Jersey. The steel for the ships was largely supplied by the
Bethlehem Steel Company The Bethlehem Steel Corporation was an American steelmaking company headquartered in Bethlehem, Pennsylvania. Until its closure in 2003, it was one of the world's largest steel-producing and shipbuilding companies. At the height of its success ...
of Pennsylvania,Argentine Navy; Dreadnought Orders
" ''Evening Post'', 23 March 1910, 4.
which, due to their ability to produce steel at a lower price than other nations, was an integral cost-saving measure. The Secretary of the Argentine Naval Commission, the body which chose the final design, said the reason the American tender was lower than that of the English was that "steel for construction work and armor-plating is a great deal cheaper in the United States than in England. Wages are higher there, but the contractors ... are able to obtain it more cheaply owing to the manipulations of the Steel Trust." A third dreadnought, provided for in the contract, was strongly supported by Argentina and by U.S. diplomats during 1910, while the ''Minas Geraes'' class was still under construction. ''La Prensa'' and one of its rivals, '' La Argentina'', heavily advocated a third ship; the latter even started a petition to raise money for a new battleship. An American diplomat wrote back to the United States that "this newspaper rivalry promises the early conclusion of a movement which means a third battleship whether by public subscription or by Government funds."Livermore, "Battleship Diplomacy," 44. However, Brazil's 21–26 November Revolt of the Lash—in which the three most powerful ships in the fleet (the battleships and and the cruiser ) and several smaller warships violently rebelled—crushed the previous sentiment for a new battleship. About two years later in October 1912, a third dreadnought was authorized by Argentina in case Brazil's ''Rio de Janeiro'' was completed and delivered. The ship was never named or built, as ''Rio de Janeiro'' was sold to the
Ottoman Empire The Ottoman Empire (), also called the Turkish Empire, was an empire, imperial realm that controlled much of Southeast Europe, West Asia, and North Africa from the 14th to early 20th centuries; it also controlled parts of southeastern Centr ...
due to monetary issues, and a later planned Brazilian ship () was canceled due to the beginning of the
First World War World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
.


International reaction

The choice of Fore River came as a complete surprise to the European bidders. Britain's reaction in particular was scathing: Sir John H. Biles, a professor and well-known
naval architect This is the top category for all articles related to architecture and its practitioners. {{Commons category, Architecture by occupation Design occupations Occupations Occupation commonly refers to: *Occupation (human activity), or job, one's rol ...
, decried the bidding process as "unethical": Various British newspapers also cried foul. The ''
Evening Standard The ''London Standard'', formerly the ''Evening Standard'' (1904–2024) and originally ''The Standard'' (1827–1904), is a long-established regional newspaper published weekly and distributed free newspaper, free of charge in London, Engl ...
'' believed that as "Argentina's greatest creditor and greatest client", Britain ought to have been awarded the two ships. ''
The Times ''The Times'' is a British Newspaper#Daily, daily Newspaper#National, national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its modern name on 1 January 1788. ''The Times'' and its si ...
'' took a different track, accusing American shipbuilders of slashing prices to an obscene degree, and accusing the government of exerting undue diplomatic pressure to obtain the contracts. New Zealand's '' Evening Post'' noted that the United States had previously built major warships for other countries, including Russia, and Britain's ally Japan, and commented, "The severity of the blow to England rests in ... the amount of English capital in rgentina, possibly echoing the ''Evening Standard''s argument. They referred to a "startling" fact printed by the ''
Daily Mail The ''Daily Mail'' is a British daily Middle-market newspaper, middle-market Tabloid journalism, tabloid conservative newspaper founded in 1896 and published in London. , it has the List of newspapers in the United Kingdom by circulation, h ...
'': the steel used for the armor of the American design was obtained for a much lower price. With Bethlehem's ability to produce it at £8 less per ton than British foundries, a cost savings of more than 10% in steel over the British ship could be realized. Germany asserted that the United States was given the opportunity to view the other nations' tenders and lower their price accordingly. Germany also alleged that the United States had secured the deal by pledging to come to Argentina's defense should they become embroiled in a military conflict. ''The New York Times'' noted that with Argentina's and Brazil's dreadnought orders, countries in North and South America were building the five biggest
capital ships The capital ships of a navy are its most important warships; they are generally the larger ships when compared to other warships in their respective fleet. A capital ship is generally a leading or a primary ship in a naval fleet. Strategic i ...
in the world (Brazil's ''Rio de Janeiro'', Argentina's ''Rivadavia'' and ''Moreno'', and the United States' and ) in addition to seven of the ten largest (including the United States' and ). Shortly after ''Rivadavia'' had completed its trials, the U.S. Navy's
Board of Inspection and Survey The Board of Inspection and Survey (INSURV) is a United States Navy organization whose purpose is to inspect and assess the material condition of U.S. Navy vessels. The Board is currently headquartered at Naval Amphibious Base Little Creek, Virg ...
remarked that the ship "handle remarkably well ... with comparatively minor modifications the vessel would practically meet the requirements of our own vessels."Scheina, "Argentina," 402. The Board of Inspection was less pleased with the wing turrets, stating that "while theoretically the ''Rivadavia'' has an ahead and astern fire of six guns, this is not so in reality, as it is almost certain that the blast from the waist turrets would dish in the smokepipes and damage the uptakes."


Possible sale

After Brazil sold ''Rio de Janeiro'' to the
Ottoman Empire The Ottoman Empire (), also called the Turkish Empire, was an empire, imperial realm that controlled much of Southeast Europe, West Asia, and North Africa from the 14th to early 20th centuries; it also controlled parts of southeastern Centr ...
, Argentina began to actively seek a buyer for their two ships so the profits could be invested in education. In the tension that preceded the First World War, there were many suitors. The United States, however, abhorred the idea of their latest technological advances falling into the hands of a possible future combat opponent. While the contract allowed the United States Navy an option to acquire the ships if a deal was reached with a third nation, the Navy did not want the ships; with the rapid advances in dreadnought technology, such as the "all or nothing" armor arrangement, even new ships like ''Rivadavia'' and ''Moreno'' were seen as outmoded. Three bills directing that the battleships be sold were introduced into the
Argentine National Congress The National Congress of Argentina () is the legislative branch of the government of Argentina. Its composition is bicameral, constituted by a 72-seat Senate and a 257-seat Chamber of Deputies. The Senate, a third of whose members are elected to ...
in the summer of 1914, but all were defeated. Still, soon after the beginning of the First World War, the German ambassador to Argentina alleged to the U.S. State Department that Britain's Royal Navy was going to take over the ships as soon as the ships reached the River Plate, and the British put diplomatic pressure on the United States to try to ensure the ships were not sold to any other country (as this new country could in turn sell them to Germany). Italy, the Ottomans, and Greece were all reportedly interested in buying both ships, the latter as a counter to the Ottoman purchase of ''Rio de Janeiro''. The United States, worried that its neutrality would not be respected and its technology would be released for study to a foreign competitor, put diplomatic pressure on Argentina to keep the ships, which it eventually did.


Design influences

The ''Rivadavia'' design was very similar to a 1906 proposal from Fore River for an American dreadnought class. This ship would have mounted a
main battery A main battery is the primary weapon or group of weapons around which a warship is designed. As such, a main battery was historically a naval gun or group of guns used in volleys, as in the broadsides of cannon on a ship of the line. Later, th ...
of fourteen guns in twin turrets (two
superfiring Superfiring armament is a naval design technique in which two or more turrets are located one behind the other, with the rear turret located above ("super") the one in front so that it can fire over the first. This configuration meant that both ...
fore, two
wing A wing is a type of fin that produces both Lift (force), lift and drag while moving through air. Wings are defined by two shape characteristics, an airfoil section and a planform (aeronautics), planform. Wing efficiency is expressed as lift-to-d ...
, and three non-superfiring aft), a secondary battery of twenty 4-inch (102 mm) guns and four
torpedo tube A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboa ...
s on a hull of that would be capable of . Foreign practices also bore a large influence on the design; most were acquired through the unique design process of rejecting multiple bids and calling for the best aspects of each. For example, the superfiring arrangement of the main battery was an American innovation, while the wing turrets were similar to British designs of the time. The secondary battery of 6-inch (152 mm) guns and the three-shaft system were influenced by German design practices, while the engine and boiler layout was reminiscent of the Italian battleship .


Service histories

was named after
Bernardino Rivadavia Bernardino de la Trinidad González Rivadavia (May 20, 1780 – September 2, 1845) was the first President of Argentina, then called the United Provinces of the Río de la Plata, from February 8, 1826 to June 27, 1827. He was educated at th ...
, the first president of
Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...
, and was built by
Fore River Shipyard Fore River Shipyard was a shipyard owned by General Dynamics Corporation located on Weymouth Fore River in Braintree, Massachusetts, Braintree and Quincy, Massachusetts. It began operations in 1883 in Braintree, and moved to its final location on ...
. The ship was
laid down Laying the keel or laying down is the formal recognition of the start of a ship's construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship. Keel laying is one ...
on 25 May 1910, launched on 26 August 1911, and completed in December 1914. was named after
Mariano Moreno Mariano Moreno (; September 23, 1778March 4, 1811) was an Argentine lawyer, journalist, and politician. He played a decisive role in the Primera Junta, the first national government of Argentina, created after the May Revolution. Moreno was bor ...
, a member of the first Argentine government; laid down on 9 July 1910 by
New York Shipbuilding Corporation The New York Shipbuilding Corporation (or New York Ship for short) was an American shipbuilding company that operated from 1899 to 1968, ultimately completing more than 500 vessels for the U.S. Navy, the United States Merchant Marine, the United ...
, it was launched on 23 September 1911 and completed in February 1915.Whitley, ''Battleships'', 21. Both ships had engine trouble soon after completion: ''Rivadavia''s completion was delayed due to a damaged turbine, while ''Moreno'' had an entire turbine fail while on its trials. The ships were also plagued by an abnormally high coal consumption even after their trials.Parkes and Prendergast, ''Jane's Fighting Ships 1919'', 451. The ships finally arrived in Argentina in February and May 1915, respectively. In the early 1920s, both ships spent time in the reserve fleet due to an
economic depression An economic depression is a period of carried long-term economic downturn that is the result of lowered economic activity in one or more major national economies. It is often understood in economics that economic crisis and the following recession ...
, but enough money was available by 1924 to have the dreadnoughts modernized in the United States. Both refits included a conversion from coal to fuel oil, a new fire-control system, and other minor improvements.Scheina, "Argentina" and "Brazil," 402, 405. In the 1930s they participated in training cruises and diplomatic trips, including: * ''Moreno''s 1933 visit to Brazil with Argentine president
Agustín Pedro Justo Agustín Pedro Justo Rolón (26 February 1876 – 11 January 1943) was the president of Argentina from 1932 to 1938, during the Infamous Decade. Justo took part in the coup of 1930, becoming president two years later thanks to widespread electo ...
aboard;Whitley, ''Battleships'', 21–22. * A second visit in 1934 to mark the centennial of Brazilian independence; * ''Rivadavia''s and ''Moreno''s 1937 voyage to Europe, where they visited Brest (France),
Wilhelmshaven Wilhelmshaven (, ''Wilhelm's Harbour''; Northern Low Saxon: ''Willemshaven'') is a coastal town in Lower Saxony, Germany. It is situated on the western side of the Jade Bight, a bay of the North Sea, and has a population of 76,089. Wilhelmsha ...
,
Bremen Bremen (Low German also: ''Breem'' or ''Bräm''), officially the City Municipality of Bremen (, ), is the capital of the States of Germany, German state of the Bremen (state), Free Hanseatic City of Bremen (), a two-city-state consisting of the c ...
, and
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(Germany); * ''Moreno''s additional participation on the same voyage in the British Spithead Naval Review, where the ''New York Times'' Hanson Baldwin described it as "a strange vestigial sea monster in this company of more modern fighting ships"; * ''Rivadavia''s and ''Moreno''s 1939 training cruise to Brazil with naval cadets embarked; with the beginning of the Second World War in September, destroyers had to be sent from Argentina to escort them home. During the war, both ships were mainly inactive due to Argentine neutrality. ''Rivadavia'' undertook a last diplomatic cruise to Trinidad, Venezuela, and Colombia in 1946, but both ships were immobile by 1948. ''Moreno'' was stricken from the naval register on 1 October 1956 and was brought to Japan in 1957 for scrapping. ''Rivadavia'' was stricken on 1 February 1957 and scrapped in Italy beginning in 1959. The money gained from selling the two dreadnoughts along with an older armored cruiser, , was used to buy an
aircraft carrier An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and hangar facilities for supporting, arming, deploying and recovering carrier-based aircraft, shipborne aircraft. Typically it is the ...
from the United Kingdom, ''Independencia'' (ex-''Warrior'').


Specifications

The two ships of the ''Rivadavia'' class were
overall Overalls or bib-and-brace overalls, also called dungarees in British English, are a type of garment usually used as protective clothing when working. The garments are commonly referred to as a "pair of overalls" by analogy with "pair of trousers ...
and
between perpendiculars Length between perpendiculars (often abbreviated as p/p, p.p., pp, LPP, LBP or Length BPP) is the length of a ship along the summer load line from the forward surface of the stem, or main bow perpendicular member, to the after surface of the ster ...
. They had a beam of , a normal
draft Draft, the draft, or draught may refer to: Watercraft dimensions * Draft (hull), the distance from waterline to keel of a vessel * Draft (sail), degree of curvature in a sail * Air draft, distance from waterline to the highest point on a v ...
of , and displaced normally and at full load. The ships were staffed by 130 officers and about 1000 enlisted men. For armament, the ''Rivadavia'' class was equipped with a
main battery A main battery is the primary weapon or group of weapons around which a warship is designed. As such, a main battery was historically a naval gun or group of guns used in volleys, as in the broadsides of cannon on a ship of the line. Later, th ...
of twelve 12-inch/50
caliber In guns, particularly firearms, but not #As a measurement of length, artillery, where a different definition may apply, caliber (or calibre; sometimes abbreviated as "cal") is the specified nominal internal diameter of the gun barrel Gauge ( ...
guns, a secondary battery of twelve 6 inch (152 mm)/50 and twelve 4-inch (102 mm)/50 QF, and two 21-inch (533 mm)
torpedo tube A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboa ...
s. The 12"/50 was a
Bethlehem Bethlehem is a city in the West Bank, Palestine, located about south of Jerusalem, and the capital of the Bethlehem Governorate. It had a population of people, as of . The city's economy is strongly linked to Tourism in the State of Palesti ...
development. It was most likely based on the weapon used in the United States' , the 12"/50 caliber Mark 7 gun. The twelve guns were mounted in six twin turrets. Four turrets were
superfiring Superfiring armament is a naval design technique in which two or more turrets are located one behind the other, with the rear turret located above ("super") the one in front so that it can fire over the first. This configuration meant that both ...
fore and aft, while the other two were located ''
en echelon An echelon formation () is a (usually military) formation in which its units are arranged diagonally. Each unit is stationed behind and to the right (a "right echelon"), or behind and to the left ("left echelon"), of the unit ahead. The name of ...
'' in wing turrets. The latter weapons could, in theory, fire on a ° range on their respective sides of the hull and ° on the other, but in reality this was not possible, as the blast damage from the weapons would damage the ship. A more reasonable estimate would be ° on their sides. The 6-inch secondary armament was placed in
casemate A casemate is a fortified gun emplacement or armoured structure from which guns are fired, in a fortification, warship, or armoured fighting vehicle.Webster's New Collegiate Dictionary When referring to antiquity, the term "casemate wall" ...
s, with six on either side of the ship. For protection, they were provided with 6 inches of armor. The 4-inch weaponry, intended for use against marauding
destroyer In naval terminology, a destroyer is a fast, maneuverable, long-endurance warship intended to escort larger vessels in a fleet, convoy, or carrier battle group and defend them against a wide range of general threats. They were conceived i ...
s, was mounted unarmored in various places around the ship, including the main deck,
superstructure A superstructure is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships. Aboard ships and large boats On water craft, the superstruct ...
, and far up near the bow. As originally built, there were sixteen 4-inch guns, but four of those were replaced with four 3-inch AA guns and four 3-pounders during the 1924–1926 modernization.Whitley, ''Battleships of World War II'', 21–22. The torpedo tubes were located underneath the waterline and were loaded in a dedicated compartment. Full ammunition loads were 1,440 rounds for the 12-inch guns (120 per gun), 3,600 rounds for the 6-inch (300), 5,600 rounds for the 4-inch (350), and 16 torpedoes manufactured by Whitehead. To assist the main battery with targeting during a battle, the two ships were equipped with two
Barr & Stroud Barr & Stroud Limited was a pioneering Glasgow optical engineering firm. They played a leading role in developing modern optics, including rangefinders, for the Royal Navy and other branches of British Armed Forces during the 20th century. There ...
rangefinder A rangefinder (also rangefinding telemeter, depending on the context) is a device used to Length measurement, measure distances to remote objects. Originally optical devices used in surveying, they soon found applications in other fields, suc ...
s that were located above the
conning tower A conning tower is a raised platform on a ship or submarine, often armoured, from which an officer in charge can conn (nautical), conn (conduct or control) the vessel, controlling movements of the ship by giving orders to those responsible for t ...
s. ''Rivadavia'' and ''Moreno'' used Brown–Curtis geared
steam turbine A steam turbine or steam turbine engine is a machine or heat engine that extracts thermal energy from pressurized steam and uses it to do mechanical work utilising a rotating output shaft. Its modern manifestation was invented by Sir Charles Par ...
s, powered by 18
Babcock & Wilcox Babcock & Wilcox Enterprises, Inc. is an American energy technology and service provider that is active and has operations in many international markets with its headquarters in Akron, Ohio. Historically, the company is best known for their stea ...
boiler A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, including water heating, centra ...
s and connected to three
propeller A propeller (often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working flu ...
s. With a total output of about , the ships were designed to travel at a maximum speed of and may have been capable of slightly more. At speeds of , their endurance ranged from , respectively. Their fuel was a
coal Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other Chemical element, elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal i ...
oil An oil is any nonpolar chemical substance that is composed primarily of hydrocarbons and is hydrophobic (does not mix with water) and lipophilic (mixes with other oils). Oils are usually flammable and surface active. Most oils are unsaturate ...
mix and the ships carried of the former and of the latter. Typical of American-designed dreadnoughts at the time, the ''Rivadavia'' class included substantial armor protection. A belt was fitted amidships, covering above and below the designed
waterline The waterline is the line where the hull of a ship meets the surface of the water. A waterline can also refer to any line on a ship's hull that is parallel to the water's surface when the ship is afloat in a level trimmed position. Hence, wate ...
, gradually decreasing towards the bow and stern to and , respectively. The gun turrets received heavy armor, including on the front, on the sides, on the back, and on the top. Deck armor consisted of medium steel and
nickel steel Nickel is a chemical element; it has symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive, but large pieces are slow ...
.


See also

* '' Dreadnoughtus'' – a fossilized dinosaur found in
Patagonia Patagonia () is a geographical region that includes parts of Argentina and Chile at the southern end of South America. The region includes the southern section of the Andes mountain chain with lakes, fjords, temperate rainforests, and glaciers ...
, Argentina, named in part because of the ''Rivadavia'' class


Footnotes


Endnotes


References

* Alger, Philip.
Professional Notes; Ships of War, Budgets and Personnel; Argentine Republic
" ''Proceedings of the United States Naval Institute'' 36, no. 2 (1910): 595–647. . * Friedman, Norman. ''U.S. Battleships: An Illustrated Design History''. Annapolis, Maryland: Naval Institute Press, 1985. . . * Gardiner, Robert and Randal Gray, eds. ''Conway's All the World's Fighting Ships 1906–1921''. Annapolis: Naval Institute Press, 1985. . . * Garrett, James L. "The Beagle Channel Dispute: Confrontation and Negotiation in the Southern Cone." ''Journal of Interamerican Studies and World Affairs'' 27, no. 3 (1985): 81–109. . . . * Hough, Richard. ''The Big Battleship''. London: Michael Joseph, 1966. . * Livermore, Seward W. "Battleship Diplomacy in South America: 1905–1925." ''The Journal of Modern History'' 16, no. 1 (1944): 31–44. . . . * ———. "The American Navy as a Factor in World Politics, 1903–1913." ''The American Historical Review'' 63, no. 4 (1958): 863–879. . . . * Parkes, Oscar and Maurice Prendergast, eds
''Jane's Fighting Ships 1919''
New York: Arco Publishing Company, 1969. First published in 1919 by Sampson Low Marston. . * Preston, Antony. "Great Britain." In Gardiner and Gray, ''Conway's'', 1–104. * Sarcone, Anthony F. and Lawrence S. Rines

. Quincy, MA: Quincy Junior College, 1975. . * Scheina, Robert L. "Argentina." In Gardiner and Gray, ''Conway's'', 400–403. * ———. "Brazil." In Gardiner and Gray, ''Conway's'', 403–407. * ———. ''Latin America: A Naval History 1810–1987''. Annapolis: Naval Institute Press, 1987. . . * Sondhaus, Lawrence. ''Naval Warfare, 1815–1914''. London and New York: Routledge, 2001. . . * Topliss, David. "The Brazilian Dreadnoughts, 1904–1914." ''Warship International'' 25, no. 3 (1988): 240–289. . . * Vanterpool, Alan. "The Riachuleo." ''Warship International'' 6, no. 2 (1969): 140–141. * Whitley, M.J. ''Battleships of World War Two: An International Encyclopedia''. Annapolis:
Naval Institute Press The United States Naval Institute (USNI) is a private non-profit military association that offers independent, nonpartisan forums for debate of national security issues. In addition to publishing magazines and books, the Naval Institute holds se ...
, 1998. . .


Further reading

* Burzaco, Ricardo and Patricio Ortíz. ''Acorazados y Cruceros de la Armada Argentina, 1881–1982''. Buenos Aires: Eugenio B. Ediciones, 1997. . . (in Spanish)


External links


British diplomatic documents
relating to the dreadnought race (FO 508/8
Adam Matthew
subscription required)

* ttp://www.histarmar.com.ar/Armada%20Argentina/Buques1900a1970/AcARARivadavia-Historia.htm "Historia y Arqueología Marítima" (HistArMar) Battleship ARA Rivadavia (1914) – Pictures
Acorazado Rivadavia
(YouTube)
The Launching of the Battleship Rivadavia
(IMDB)
ARA ''Rivadavia''
on Flickr (LOC)

* ttps://www.flickr.com/photos/library_of_congress/tags/aramoreno/ ARA ''Moreno''on Flickr (LOC) {{Featured article Battleship classes Battleships of the United States