A naval
arms race An arms race occurs when two or more groups compete in increases in military personnel and materiel. Simply defined as a competition between two or more states to have superior armed forces; a competition concerning production of weapons, the gr ...
Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country located mostly in the southern half of South America. Sharing the bulk of the Southern Cone with Chile to the west, the country is also bordered by ...
Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At 8.5 million square kilometers (3.2 million square miles) and with over 211 millio ...
Chile Chile (, ; ), officially the Republic of Chile (), is a country in western South America. It occupies a long, narrow strip of land between the Andes to the east and the Pacific Ocean to the west. Chile covers an area of and has a population ...
most powerful and wealthy countries
most powerful and wealthy countries
South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. It can also be described as a southern subcontinent of the Americas. The ref ...
—began in the early twentieth century when the Brazilian government ordered three
dreadnought The dreadnought (also 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 referr ...
s, formidable
battleship A battleship is a large armored warship with a main battery consisting of large caliber guns. During the late 19th and early 20th centuries the battleship was the most powerful type of warship, and a fleet centered around the battleship was part ...
s whose capabilities far outstripped older vessels in the world's navies. At the turn of the twentieth century, the Brazilian Navy was inferior to its Argentine and Chilean rivals in quality and total tonnage. In 1904, the Brazilian legislature voted to allocate a significant amount of funds to address this naval imbalance. The proponents of this strategy believed that a strong navy would help make the country into an international power. Although several ships were ordered, the 1906 arrival of the revolutionary British warship quickly halted these plans. The Brazilians redirected their money into ordering three larger dreadnoughts from a British shipbuilder; two would be constructed immediately. These warships, the most powerful in the world, would enter service at a time where dreadnoughts were quickly becoming a measure of international prestige. They therefore brought global attention to what was perceived to be a newly ascendant country. When the time came to begin construction on Brazil's third dreadnought, it faced significant hurdles: political opposition fueled by an economic downturn and a 1910 naval revolt, and major delays caused by repeated design changes. Preliminarily named ''Rio de Janeiro'', concern over a collapse in Brazil's major exports and the possibility that the ship would be outclassed by ever-larger
super-dreadnought The dreadnought (also 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 referr ...
s led the Brazilian government to sell the incomplete vessel to the Ottoman Empire in 1914. Meanwhile, the Argentine and Chilean governments immediately moved to cancel their naval-limiting pact and ordered two dreadnoughts each: the in 1910 and in 1911, respectively. Each were larger and more powerful ships than preceding dreadnoughts ordered during the arms race, although the Argentine ships were particularly controversial, facing both political opposition and shipbuilder outrage from the multi-round bidding process used to select the design of their new ships. The First World War marked the end of the South American naval arms race, as the countries involved found themselves effectively unable to purchase additional capital ships abroad. The conflict effectively canceled a new Brazilian super-dreadnought, #Riachuelo, ''Riachuelo'', before construction began, while the two Chilean dreadnoughts were purchased by the British; one was re-acquired by the Chileans after the war. Argentina's two dreadnoughts avoided this fate by being built in the then-neutral United States and were commissioned in 1914 and 1915. Although Brazil and Chile's #Aftermath: post-war expansions, post-war naval expansion plans called for additional dreadnought-type warships, no additional new units were ever constructed.

Background: naval rivalry, revolts, and export crops

Argentine–Chilean arms race

A dispute over conflicting Argentine and Chilean claims to Patagonia, the southernmost region in South America, began in the mid-1800s, and the two nations nearly went to war over it in the late 1870s. Around the latter time, three major new warships were ordered by both nations: the Chileans added the world's first protected cruiser, , while the Argentines contracted for two warships, the central battery ship, central battery ironclad warship, ironclad and protected cruiser ARA Patagonia (1885), ''Patagonia''. In 1887, the Chilean government added Pound sterling, £3,129,500 to the budget for its fleet, which at the time was centered on two central battery ironclads, and (1870s), and what was once the world's first protected cruiser, (1883). They ordered the battleship , two protected cruisers, and two torpedo boats; their keel laying, keels were laid in 1890.Scheina, ''Naval History'', 45–46, 46n8. This was a cause for concern for the Argentine government for two reasons. First, their overlapping claims with the Chileans over the control Patagonia, the southernmost region in South America, had already nearly led to war in 1878. Second, the Argentines had recently watched the Chileans win the War of the Pacific and obtain regions from Bolivia and Peru, and there was no guarantee that Chile would not try to replicate that success against Argentina. Moreover, while the country did possess more warships than the Chileans, such as the central battery ship, central battery ironclad warship, ironclad , their warships were usually smaller and their crews less experienced than the battle-tested Chileans. Facing these challenges, Argentine government quickly responded to the Chilean naval expansion with an order for two battleships. This began a naval
arms race An arms race occurs when two or more groups compete in increases in military personnel and materiel. Simply defined as a competition between two or more states to have superior armed forces; a competition concerning production of weapons, the gr ...
between the two countries which continued through the 1890s, surviving even the expensive Chilean Civil War of 1891, Chilean Civil War (1891). The two countries alternated cruiser orders over the next few years, with each marking an increase in capabilities from the ship previous; the race escalated in the middle of the decade when both countries ordered powerful armored cruisers. With a war clearly on the horizon, in 1898 the two countries submitted the Patagonian border dispute to British arbitration. Moreover, the Americans successful mediated a Puna de Atacama dispute, boundary dispute in the northern Puna de Atacama region. However, more ships were ordered by both countries in 1901. The Argentine Navy bought two more armored cruisers from Italy, and the Chilean Navy replied with orders for two pre-dreadnought battleship, pre-dreadnought battleships from British shipyards. The Argentines reacted in May 1901 by signing letters of intent to buy two larger battleships. The growing dispute disturbed the British government, as an armed conflict would disrupt the country's extensive commercial interests in the region. The British mediated negotiations between Argentina and Chile, and the resulting Pacts of May were signed on 28 May 1902. The third pact limited the naval armaments of both countries; both were barred from acquiring any further warships for five years without giving the other eighteen month's notice. The warships ordered in 1901 were sold: Chile's battleships became the United Kingdom's , and Argentina's armored cruisers became Japan's ; plans for Argentina's larger battleships were discarded. In addition, ''Capitán Prat'' and two Argentine armored cruisers were disarmed with the exception of their main batteries, as there was no crane in Argentina that was capable of removing the cruisers' gun turrets.

Brazilian decline and re-emergence

Brazil's navy fell into disrepair and obsolescence in the aftermath of an Decline and fall of Pedro II of Brazil#Republican coup, 1889 army-led coup d'etat, which deposed Politics of the Empire of Brazil, Emperor Dom (title), Dom Pedro II of Brazil, Pedro II and established the First Brazilian Republic. In the immediate years after the coup, the country would witness Revolta da Armada, two naval revolts (1891 and 1893–94), the Federalist Riograndense Revolution (Brazil), Federalist Revolution (1893–95), and the War of Canudos (1896–97). The navy's opposition to the government in several of those conflicts cost it dearly: by 1896, it had just forty-five percent of its authorized personnel in 1896, and by the end of the century its only modern armored ships in an era of rapid naval technological development were two small coast-defense vessels launched in 1898. With such dilapidated defenses, José Paranhos, Baron of Rio Branco, José Paranhos Jr., the Baron of Rio Branco and Foreign Minister of Brazil, stated; Meanwhile, although the Argentine–Chilean agreement had limited their naval expansion, they still retained numerous vessels delivered prior to the agreement. That meant that by the turn of the 20th century, the Brazilian Navy lagged far behind its Argentine and Chilean counterparts in both quality and total tonnage. The profits from a heightened global demand for coffee and rubber, something which led led to Brazil's Coffee production in Brazil#History, coffee economy and rubber boom, gave Brazilian politicians Pinheiro Machado (politician), Pinheiro Machado and Rio Branco the opportunity to construct a strong navy that would be key in achieving their goal of having the country recognized as an international power. The National Congress of Brazil passed a large naval acquisition program on 14 December 1904, but it was two years before any ships were ordered or purchased. By 1906, two factions had developed over which types of ships should be ordered. One, supported by the British armament company Armstrong Whitworth (which eventually received the order), favored a navy centered on a small number of large warships. The other, supported by Rio Branco, preferred a larger navy composed of smaller warships. Rio Branco, in support of this measure, stated that "with six small battleships we would be much better. If we lost one or two in combat, there would be still four or five left to fight with. But with three [larger battleships]? With two damaged or destroyed, we would be left with one only." At first, the smaller warships faction prevailed. After Law no. 1452 was passed on 30 December 1905, which authorized £4,214,550 for new warship construction (£1,685,820 in 1906), three small battleships, three armored cruisers, six destroyers, twelve torpedo boats, three submarines, a Collier (ship), collier, and a training ship were ordered. Though the Brazilian government later eliminated the armored cruisers for monetary reasons, the Minister of the Navy, Admiral Júlio César de Noronha, signed a contract with Armstrong Whitworth for the planned battleships on 23 July 1906. The British ambassador to Brazil was opposed to the planned naval expansion, even though the orders had gone to a British company, on account of its large cost and negative effects on relations between Brazil and Argentina. He saw it as "an embodiment of national vanity, combined with personal motives of a pecuniary character." The American ambassador to Brazil was alarmed, and sent a cablegram to his United States Department of State, Department of State in September 1906, warning them of the destabilization that would occur if the situation devolved into a full naval arms race. At the same time, the American government under Theodore Roosevelt tried using diplomatic means to coerce the Brazilians into canceling their ships, but the attempts were dismissed. The Baron of Rio Branco remarked that caving to the American demands would render Brazil as powerless as Cuba, whose 1901 Constitution of Cuba, new constitution allowed the American government to intervene in Cuban affairs.Livermore, "Battleship Diplomacy," 33. Although a new Brazilian president, Afonso Pena, took office in November 1906, he also supported the naval acquisitions. In an early address to the National Congress of Brazil, he stated that the ships were necessary to replace the antiquated vessels composing the current navy and a battleship which had unexpectedly blown up earlier that year.

Catalyst: Brazil's opening salvo

After construction began on Brazil's three new small battleships, a new presidential administration took office and the Brazilian government proceeded to reconsider their order and chosen battleship design (something that would happen #Reciprocation: Brazil orders again, several more times during the construction of HMS Agincourt (1913), ''Rio de Janeiro'' in 1913). This was wrought by the debut of the United Kingdom's new
dreadnought The dreadnought (also 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 referr ...
concept, which was represented by the surprisingly fast construction and ship commissioning, commissioning of HMS Dreadnought (1906), the eponymous ship in 1906. The hallmark of this new warship type was its "all-big-gun" armament, which utilized many more heavy-caliber weapons than previous battleships, and it rendered the Brazilian ships obsolete before they were completed. The money authorized for naval expansion in 1905 was redirected to building three dreadnoughts (with the third to be laid down after the first was launched), three scout cruisers (later reduced to two, which became the ), fifteen destroyers (later reduced to ten, the ), three submarines (the F 1-class submarine, ''F 1'' class), and two submarine tenders (later reduced to one, ). This move was made with the large-scale support of Brazilian politicians, including Pinheiro Machado and a nearly unanimous vote in the Senate; the navy, now with a large-ship advocate, Rear Admiral , in the influential post of minister of the navy; and the Brazilian press. Still, these changes were made with the stipulation that the total price of the new naval program not exceed the original limit, so the increase in battleship tonnage was bought with the previous elimination of armored cruisers and decreasing the number of destroyer-type warships. The three battleships on which construction had begun were scrapped beginning on 7 January 1907, and the design for the new dreadnoughts was approved on 20 February. Newspapers began covering the Brazilian warship order in March, and Armstrong laid down the first dreadnought on 17 April. The full order—including all three dreadnoughts and the two cruisers—was reported by the ''New York Herald'', ''Daily Chronicle (United Kingdom), Daily Chronicle'', and the The Times, ''Times'' later that year. The Brazilian order for what contemporary commentators called "the most powerful battleship[s] in the world" came at a time when few countries in the world had contracted for such armament. Brazil was the third country to have a dreadnought under construction, behind the United Kingdom, with and the , and the United States, with the . This meant that Brazil was in line to have a dreadnought before many of the world's perceived powers, like French Third Republic, France, the German Empire, the Russian Empire, and the Empire of Japan. As dreadnoughts were quickly equated with international status, somewhat similar to nuclear weapons today—that is, regardless of a state's need for such equipment, simply ordering and possessing a dreadnought increased the owner's prestige—the order caused a stir in international relations. Newspapers and journals around the world speculated that Brazil was acting as a proxy for a stronger country which would take possession of the two dreadnoughts soon after completion, as they did not believe that a previously insignificant geopolitical power would contract for such armament. Many American, British, and German sources variously accused the Americans, British, German, or Japanese governments of secretly plotting to purchase the vessels. The The World's Work, ''World's Work'' remarked: On the other side of the Atlantic, in the midst of the Anglo–German naval arms race, members of the British House of Commons of the United Kingdom, House of Commons fretted over the battleships' possible destinations, though the Admiralty consistently stated that they did not believe any sale would occur. In mid-July and September 1908, the Commons discussed purchasing the ships to bolster the Royal Navy and ensure they would not be sold to a foreign rival, which would disrupt the British naval plan set in place by the "Naval Defence Act 1889, two-power standard," though in March and late July 1908, the Brazilian government officially denied any sale was planned. In March 1909, the British press and House of Commons began pushing for more dreadnoughts after the First Lord of the Admiralty, Reginald McKenna, asserted that Germany had stepped up its building schedule and would complete thirteen dreadnoughts in 1911—four more than previously estimated. Naturally, the subject of purchasing the Brazilian dreadnoughts already being built was brought up, and McKenna had to officially deny that the government was planning to tender an offer for the warships. He also stated that a sale to a foreign nation would be inconsequential, as "our present superiority in strength in 1909–10 is so great that no alarm would be created in the mind of the Board of Admiralty." Despite the plethora of rumors, the Brazilian government was not planning to sell their ships. Dreadnoughts formed an important role in Rio Branco's goal of raising Brazil's international status:

Counter: Argentina and Chile respond

Argentina was highly alarmed by the Brazilian move, and they quickly moved to nullify the remaining months of the naval-limiting restrictions in the 1902 pact with Chile. In November 1906, Argentina's Ministry of Foreign Affairs, International Trade and Worship, Minister of Foreign Affairs, , remarked that any one of the new Brazilian vessels could destroy the entire Argentine and Chilean fleets.Martins, "Colossos do mares," 76. Despite the seeming hyperbole, his statement—made before the Brazilian government reordered the ships as dreadnoughts—ended up being close to the truth: in 1910, at least, the new Brazilian warships were seemingly stronger than any other vessel in the world, let alone any one ship in the Argentine or Chilean fleets. With this in mind, the ''Journal of the American Society of Naval Engineers'' opined that maintaining the older ''Libertad'' class or ''Capitán Prat'' (respectively) was now a waste of money. The Argentine government's alarm continued under de Oca's successor, Estanislao Zeballos. In June 1908, Zeballos presented a plan to the Argentine Congress where they would offer the Brazilian government a chance to give one of their two unfinished dreadnoughts to Argentina. This would allow the two countries a chance to enjoy relative naval parity. Should the Brazilians refuse, Zeballos planned to issue an ultimatum: if they did not comply in eight days, the mobilized Argentine Army would invade what the army and navy ministers claimed was a defenseless Rio de Janeiro. Unfortunately for Zeballos, his plan was leaked to the media, and the resulting public outcry—Argentine citizens happened to not be in favor of their government borrowing large sums of money to mobilize the army and go to war—ensured his resignation. The Argentine government was also deeply concerned with the possible effect on the country's large export trade, as a Brazilian blockade of the entrance to the Río de la Plata, River Plate would cripple the Argentine economy. The acquisition of dreadnoughts to maintain an equal footing with Brazil would, in the words of the Argentine admiral overseeing his countries' dreadnoughts while they were being constructed, avoid a "preponderance of power on the other side, where a sudden gust of popular feeling or injured pride might make [a blockade] a dangerous weapon against us." Both countries faced difficulty in financing their own dreadnoughts. Although in Argentina the ruling National Autonomist Party supported the purchases, they initially faced public resistance for such expensive acquisitions. An influx of inflammatory newspaper editorials supporting new dreadnoughts, especially from La Prensa (Buenos Aires), ''La Prensa'', and renewed border disputes, particularly Brazilian assertions that the Argentines were attempting to restore the Viceroyalty of the Río de la Plata, swayed the public to support the purchases. The Argentine President, José Figueroa Alcorta, attempted to ease the tensions with a message warning the Brazilians of a naval arms race should they continue on their present course. The Brazilian government replied with reasoning similar to Pena's speech in 1906, in that they believed the ships were necessary to replace the antiquated equipment left by the long-term neglect of the Brazilian Navy, and they repeatedly insisted that the ships were not meant for use against Argentina. In August, a bill authorizing the Argentine Navy to acquire three dreadnoughts was passed by the Argentine Chamber of Deputies, Chamber of Deputies seventy-two to thirteen. Three months later, it was defeated in the Argentine Senate, Senate after they approved an arbitration treaty and the government made a last-ditch offer to purchase one of the two Brazilian dreadnoughts currently being constructed. The Brazilian government declined, so the bill was reintroduced and passed by the Senate on 17 December 1908 with forty-nine in support to thirteen opposed, over socialist objections that the country needed to be populated and the large sum of money (£14,000,000) could be better spent in other areas of the government. After the Argentine government sent a naval delegation to Europe to solicit and evaluate armament companies' offers, they received tenders from fifteen shipyards in five countries (the United States, Great Britain, Germany, France, and Italy), and conducted a Rivadavia-class battleship#Bidding, drawn-out bidding process. The Argentine delegation rejected all of the bids twice, each time recycling the best technical aspects of the tendered designs when crafting new bidding requirements. The reason given for the first rejection was the appearance of the first
super-dreadnought The dreadnought (also 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 referr ...
, . Still, the shipbuilders were furious, as the process of designing a major warship took large amounts of time and money, and they believed the Argentine tactic revealed their individual trade secrets. A British naval architect published a scathing condemnation of the Argentine tactics, albeit only after the contracts were not awarded to a British company: The United States' Fore River Shipyard, Fore River Ship and Engine Company tendered the lowest bid—in part owing to the availability of cheap steel, though they were accused of quoting an unprofitable price so the ships could act as loss leaders—and was awarded the contract. This aroused further suspicion in the European bidders, who had previously believed that the United States was a non-contender, though Argentina did order twelve destroyers from British, French, and German shipyards to soften the blow. These bidders, along with newspapers like the ''Times'' (London), turned their anger on the American government under President William Howard Taft, whose so-called "Dollar Diplomacy" policy had led his State Department to go to great lengths to obtain the contracts. Their reactions may have been justified: Taft boasted in the high-profile 1910 State of the Union address that the Argentine dreadnought order was awarded to American manufacturers "largely through the good offices of the Department of State." The Argentine contract included an Option (finance), option for a third dreadnought in case the Brazilian government adhered to its contractual obligations to order a third dreadnought. Two newspapers, La Prensa (Buenos Aires), ''La Prensa'' and La Nación, ''La Argentina'', heavily advocated for a third ship; the latter even started a petition to raise money for a new battleship.Livermore, "Battleship Diplomacy," 44. The American minister to Argentina, Charles H. Sherrill (ambassador), Charles H. Sherrill, cabled 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." On 31 December 1910, the Argentine government decided against constructing the ship, after Roque Sáenz Peña, who had been making entreaties to Brazil to end the expensive naval race, was elected to the Presidency. In addition, the intended target of the third Argentine dreadnought, the third Brazilian dreadnought, had already been canceled multiple times. The Chilean government delayed their naval plans after a financial depression (economics), depression brought on by the 1906 Valparaíso earthquake and a drastic fall in the nitrate market in 1907, but these economic problems were not enough to stop them from countering the dreadnoughts purchased by their traditional rival Argentina. While Argentina's principal concern was with Brazil, Chile also wished to respond to Peruvian military acquisitions. Money for a naval building program was allocated in 1910. Although the Chilean government solicited bids from several armament companies, nearly all believed that a British company would win the contract; the American Military attaché, naval attaché opined that without anything short of a revolution the contracts were destined for the United Kingdom. The Chilean Navy had cultivated extensive ties with the United Kingdom's Royal Navy since the 1830s, when Chilean naval officers were given places on British ships to receive training and experience they could bring back to their country. This relationship had recently been cemented when a British naval mission was requested by Chile and sent in 1911. Still, the American and German governments attempted to swing sentiment to their side by dispatching modern naval vessels ( and , respectively) to Chilean ports. Their efforts were futile, and the design tendered by Armstrong Whitworth was chosen on 25 July 1911.

Other navies

Other South American navies, having limited resources and little expertise in operating large warships, were in no state to respond. The Peruvian Navy, fourth largest on the continent, had been decimated during the Naval Campaign of the War of the Pacific, naval campaign of the War of the Pacific against Chile (1879–83). It took the Peruvian government more than twenty years to order new warships—the (BAP Almirante Grau (1906), ''Almirante Grau'' and BAP Coronel Bolognesi (1906), ''Coronel Bolognesi''), scout cruisers delivered in 1906 and 1907. They were augmented by two submarines and a destroyer ordered from France. ''Almirante Grau'' was only intended to be the fleet's flagship until a more powerful warship was purchased; along with ''Coronel Bolognesi'', they would be the "pioneers" of a modern navy. ''Proceedings'' reported in 1905 that this new navy would be composed of three Swiftsure-class battleship, ''Swiftsure''-like pre-dreadnoughts, three armored cruisers, six destroyers, and numerous smaller warships, all acquired as part of a nine-year, $7 million outlay. None of these plans came to fruition. The closest major expansion came in 1912, when the Peruvian Navy had an agreement to acquire an obsolete French armored cruiser in 1912 () for three million French franc, francs. The Peruvian government paid one of a planned three planned installments, but the purchase came under criticism at home for not being able to change any balance of power with Chile. When a potential cruiser purchase by Ecuador fell through, the Peruvians quit paying for the ship, which was later converted to a merchant ship and scrapped in 1923. Other South American navies also added smaller vessels to their naval forces in the same time period. The National Navy of Uruguay, Uruguayan Navy acquired the protected cruiser in 1908 and the torpedo gunboat ''Uruguay'' in 1910. The Bolivarian Armada of Venezuela, Venezuelan Navy bought an ex-Spanish protected cruiser, USS Isla de Cuba (1886), ''Mariscal Sucre'', from the United States in 1912. The Ecuadorian Navy incorporated , a torpedo gunboat bought from Chile, in 1907, complementing its fleet of two avisos, both around ; two small steamers; and one minor coast guard ship.

Results: construction and trials of the new warships

Brazil's , the lead ship, was keel laying, laid down by Armstrong on 17 April 1907, while its sister ship, sister followed on 30 April at Vickers. Completion of the partial hull needed to ship naming and launching, launch ''Minas Geraes'' was delayed by a five-month strike action, strike to 10 September 1908. ''São Paulo'' followed on 19 April 1909. Both were ship christening, christened in front of large crowds by the wife of Francisco Régis de Oliveira, the List of Ambassadors of Brazil to the United Kingdom, Brazilian ambassador to the United Kingdom.Launch Greatest Warships
" ''New York Times'', 11 September 1908, 5;

" ''New York Times'', 20 April 1909, 5.
After fitting-out, the period after a warship's launch where it is completed, ''Minas Geraes'' was put through multiple Sea trial, trials of the speed, endurance, efficiency, and weaponry of the ship in September, including what was at that time the heaviest broadside ever fired off a warship. ''Minas Geraes'' was completed and handed over to Brazil on 5 January 1910. The trials proved that the Blast injury, blast from the class' superfire, superfiring upper turrets would not injure crewmen in the lower turrets. The ship itself managed to reach on an horsepower#Indicated horsepower, indicated horsepower (ihp) of 27,212. ''São Paulo'' followed its classmate in July, after its own trials at the end of May, where the ship reached at 28,645 ihp. Argentina's was built by the Fore River Ship and Engine Company at its shipyard in Massachusetts. As called for in the final contract, was subcontractor, subcontracted out to the New York Shipbuilding, New York Shipbuilding Corporation of New Jersey.Scheina, ''Naval History'', 83. The steel for the ships was largely supplied by the Bethlehem Steel Company of Pennsylvania.Argentine Navy; Dreadnought Orders
" ''Evening Post'' (Wellington), 23 March 1910, 4.
''Rivadavia'' was laid down on 25 May 1910—one hundred years after the establishment of the first independent Argentine government, the ''Primera Junta''—and launched on 26 August 1911. ''Moreno'' was laid down on 10 July 1910 and launched on 23 September 1911. Construction on both ships took longer than usual, and there were further delays during their sea trials when one of ''Rivadavia''s turbines was damaged and one of ''Moreno''s turbines failed. The two were only officially completed in December 1914 and February 1915. Even the departure of ''Moreno'' was marked by mishaps, as the ship sank a barge and ran aground twice. Chile's was launched on 27 November 1913. After the World War I, First World War broke out in Europe, work on ''Almirante Latorre'' was halted in August 1914, and it was formally purchased on 9 September after the British Cabinet of the United Kingdom, Cabinet recommended it four days earlier. ''Almirante Latorre'' was not forcibly seized like the Ottoman Ottoman battleship Reşadiye, ''Reşadiye'' and Ottoman battleship Sultân Osmân-ı Evvel, ''Sultân Osmân-ı Evvel'' (ex- ''Rio de Janeiro''), two other ships being built for a foreign navy, as a result of Chile's "friendly neutral" status with the United Kingdom. The British needed to maintain this relationship owing to their dependence on Chilean nitrate imports, which were vital to the British armament industry. The former Chilean ship—the largest vessel built by Armstrong up to that time—was completed on 30 September 1915, commissioned into the Royal Navy on 15 October, and served in that navy in the First World War. Work on the other battleship, ''Almirante Cochrane'', was halted after the outbreak of war. The British purchased the incomplete hulk on 28 February 1918 for conversion to an aircraft carrier, as ''Almirante Cochrane'' was the only large and fast hull which was immediately available and capable of being modified into a carrier without major reconstruction. Low priority and industrial action, quarrels with shipyard workers slowed completion of the ship; it was commissioned into the Royal Navy as in 1924.Preston, "Great Britain," 70.

Reciprocation: Brazil orders again

''Rio de Janeiro''

After the first Brazilian dreadnought, ''Minas Geraes'', was launched, the Brazilian government began an extended campaign to remove the third dreadnought from the contract because of political—backlash from the Revolt of the Lash coupled with warming relations with Argentina—and economic reasons. After much negotiating and attempts from Armstrong to hold the Brazilian government to the contract, the Brazilians relented, due in part to lower bond rates that made it possible for the government to borrow the necessary money. ''Rio de Janeiro'' was laid down for the first time in March 1910. By May, the Brazilian government asked Armstrong to stop work on the new warship and to submit new designs which took in the most recent advance in naval technology,
super-dreadnought The dreadnought (also 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 referr ...
s. Sir Eustace Tennyson d'Eyncourt, 1st Baronet, Eustace Tennyson-d'Eyncourt served as Armstrong's liaison to Brazil. The Encyclopædia Britannica Eleventh Edition, 1911 ''Encyclopædia Britannica'' specifies this design as a long length overall, overall, ship mounting twelve 14-inch guns and costing near £3,000,000. The many requests made by the Brazilian Navy for minor changes delayed the contract signing until 10 October 1910, and the battleship's keel laying was delayed further by a Labor unrest, labor dispute with the Worshipful Company of Shipwrights, which led to a Lockout (industry), lockout. During these delays, a new Minister of the Navy, Admiral Marques Leão, was appointed to replace de Alencar—an important development, as the contract stipulated that the design could only proceed with the approval of the new Minister. Again, however, the Brazilian Navy found itself torn between two schools of thought: Leão and others in the navy favored a reversion to the 12-inch gun, but others, led by the outgoing Minister of the Navy (de Alencar) and the head of the Brazilian naval commission in the United Kingdom (Rear Admiral ), were strongly in favor of obtaining the ship with the largest armament—in this case, a design drawn up by Bacellar, carrying eight 16-inch guns, six 9.4-inch guns, and fourteen 6-inch guns. D'Eyncourt, who had departed Brazil in October immediately after the contract was signed, returned in March 1911 to display the various design options available to the Brazilian Navy. Armstrong evidently thought the second faction would prevail, so he also took with him everything needed to close a deal on Bacellar's design. By mid-March, Armstrong's contacts in Brazil reported that Leão had convinced the recently elected President Hermes da Fonseca, Hermes Rodrigues da Fonseca to cancel the design with twelve 14-inch guns in favor of a smaller ship. The credit may not have laid with Leão alone, though; da Fonseca was already dealing with multiple issues. Most importantly, he had to deal with #Brazilian naval revolt, the fallout from a large naval revolt in November 1910 (the Revolt of the Lash), which had seen three of the new vessels just purchased by the navy, along with one older coast-defense ship, mutiny against the use of corporal punishment in the navy. To make matters worse, the dreadnoughts' expense combined with loan payments and a worsening economy led to growing government debt compounded by Government budget deficit, budget deficits. By one measure of Brazil's Gross domestic product, GDP per capita, income in the country rose from $718 in 1905 to a high of $836 in 1911 before declining over the next three years to a low of $780 in 1914 (both measured in 1990 Geary–Khamis dollar, international dollars). It did not fully recover until after the First World War. At the same time, Brazil's external and internal debt reached $500 and $335 million (respectively, in contemporaneous dollar amounts) by 1913, partly through rising deficits, which were $22 million in 1908 and $47 million by 1912. In May, the president commented negatively on the new ship: D'Eyncourt probably avoided proposing any design with 16-inch guns when he saw the political situation. In meetings with Leão, designs of only ten 12-inch guns mounted on the centerline were quickly rejected, even though their broadside was as strong as that of the ''Minas Geraes'' class, but a design with no less than ''fourteen'' 12-inch guns emerged as the frontrunner. Author David Topliss attributes this to political necessity, as he believed the Minister of the Navy could not validate purchasing a seemingly less-powerful dreadnought than the ''Minas Geraes'' class: with larger guns ruled out, the only remaining choice was a larger number of guns. After numerous requests for design alterations from the Brazilian Navy were accommodated or rejected, a contract was signed for a ship with fourteen 12-inch guns on 3 June 1911 for £2,675,000, and ''Rio de Janeiro''s keel was laid for the fourth time on 14 September. It did not take long for the Brazilian government to reconsider their decision again; by mid-1912, battleships with 14-inch guns were under construction, and suddenly it seemed that ''Rio de Janeiro'' would be outclassed upon completion. Making matters worse, a European depression after the end of the Second Balkan War in August 1913 reduced Brazil's ability to obtain foreign loans. This coincided with a collapse in Brazil's coffee and rubber exports, the latter due to the loss of the Rubber boom#The end of the Amazon's rubber monopoly, Brazilian rubber monopoly to British plantations in the Far East. The price of coffee declined by 20 percent and Brazilian exports of it dropped 12.5 percent between 1912 and 1913; rubber saw a similar decline of 25 and 36.6 percent, respectively. The Brazilian Navy later claimed that selling ''Rio de Janeiro'' was a tactical decision, so they could have two divisions of battleships: two with 12-inch guns (the ''Minas Geraes'' class), and two with 15-inch guns. Armstrong studied whether replacing the 12-inch guns with seven 15-inch guns would be feasible, but Brazil was probably already attempting to sell the ship. In the tension building up to the First World War, many countries, including Russia, Italy, and the two participants in the Greco–Ottoman dreadnought race, were interested in purchasing the ship. While Russia quickly dropped out, the Italians seemed close to purchasing the ship until the French government decided to back the Greeks—rather than allow the Italians, who were the principal naval rivals of the French, to obtain the ship. The Grecian government made an offer for the original purchase price plus an additional £50,000, but as the Greeks worked to obtain an initial installment, the Ottoman government was also making offers. The Brazilian government rejected an Ottoman proposal to swap ships, with Brazil's ''Rio de Janeiro'' going to the Ottomans and Ottoman battleship Reşadiye, ''Reşadiye'' going to Brazil, presumably with some amount of money. The Brazilian government would only accept a monetary offer. Lacking this, the Ottomans were forced to find a loan. Fortunately for them, they were able to obtain one from a French banker acting independent of his government, and the Ottoman Navy secured the ''Rio de Janeiro'' on 29 December 1913 for £1,200,000 as-is. As part of the purchase contract, the remainder of the ship was constructed with £2,340,000 in Ottoman money.Turkish Navy
" ''Sydney Morning Herald'', 31 December 1913, 13.
Renamed ''Sultân Osmân-ı Evvel'', it was eventually taken over by the British shortly after the beginning of the First World War, serving with the Royal Navy as .


After selling ''Rio de Janeiro'', the Brazilian government asked Armstrong and Vickers to prepare designs for a new battleship, something strongly supported by the Navy League of Brazil (''Liga Maritima''). Armstrong agreed to construct the ship without any further payments from Brazil. They replied with at least fourteen designs, six from Vickers (December 1913 through March 1914) and eight from Armstrong (February 1914). Vickers' designs varied between eight and ten 15-inch and eight 16-inch guns, with speeds between 22 and 25 knots (the lower-end ships having mixed firing, the higher using oil), and displacements between and . Armstrong took two basic designs, one with eight and the other with ten 15-inch guns, and varied their speed and firing.Topliss, "Brazilian Dreadnoughts," 285–86. While most secondary sources do not mention that Brazil ordered a battleship, with the ship's entry in the warship encyclopedia ''Conway's All the World's Fighting Ships'' even remarking that "Brazil had not selected from the four design variations," the Brazilian government chose what was labeled as Design 781, the first of the eight 15-inch designs tendered by Armstrong, which also shared characteristics with the Queen Elizabeth-class battleship, ''Queen Elizabeth'' and Revenge-class battleship, ''Revenge'' classes then being built for the United Kingdom. They placed an order for one ship of this design, to be named ''Riachuelo'', at the Armstrong Whitworth shipyard in Elswick, Tyne and Wear, Elswick on 12 May 1914. Some preliminary gathering of materials was completed for a planned keel laying date of 10 September, but the beginning of the First World War in August 1914 delayed plans. ''Riachuelo'' was officially suspended on 14 January 1915 and canceled on 13 May 1915, although at least one contemporary source stated that there was a "temporarily suspended" contract for the fourth dreadnought still out as of 1922.

Decline: instability and public unrest

Brazilian naval revolt

In late November 1910, a large naval revolt, later named the Revolt of the Lash, broke out in Rio de Janeiro. The tension was kindled by the racial makeup of the navy's regular crewmembers, who were heavily black or mixed-race, whereas their officers were mostly white. The Baron of Rio Branco commented: "For the recruitment of marines and enlisted men, we bring aboard the dregs of our urban centers, the most worthless ''lumpen'', without preparation of any sort. Ex-slaves and the sons of slaves make up our ships' crews, most of them dark-skinned or dark-skinned mulattos." This kind of impressment, combined with the heavy use of corporal punishment for even minor offenses, meant that relations between the black crews and white officers was tepid at best. Crewmen aboard ''Minas Geraes'' began planning for a revolt in 1910. They chose João Cândido Felisberto, an experienced sailor, as their leader. The mutiny was delayed several times by disagreements among the participants. In a major meeting on 13 November, some of the revolutionaries expressed a desire to revolt when the president would be inaugurated (15 November), but another leader, Francisco Dias Martins, talked them out of the idea, insisting that their demands would be overshadowed by a perceived rebellion against the political system as a whole. The immediate catalyst for their revolt came on 21 November 1910, when an Afro-Brazilian sailor, Marcelino Rodrigues Menezes, was brutally flogged 250 times for insubordination. A Brazilian government observer, former navy captain José Carlos de Carvalho, stated that the sailor's back looked like "a mullet sliced open for salting." The revolt began aboard ''Minas Geraes'' at around 10 pm on 22 November; the ship's commander and several loyal crewmen were murdered in the process. Soon after, ''São Paulo'', the new cruiser ''Bahia'', the coast-defense ship , the minelayer , the training ship , and the torpedo boats and all revolted with relatively little violence. The first four ships represented the newest and strongest ships in the navy; ''Minas Geraes'', ''São Paulo'', and ''Bahia'' had been completed and commissioned only months before. ''Deodoro'' was twelve years old and had recently undergone a wikt:refit, refit. The crews of the smaller warships made up only two percent of the mutineers, and some moved to the largest ships after the revolt began. Key warships that remained in government hands included the old cruiser , ''Bahia''s sister , the eight new destroyers of the Pará class destroyer (1908), ''Pará'' class. Their crews were in a state of flux at the time: with nearly half of the navy's enlisted men in Rio at that time in open revolt, naval officers were suspicious of even those who remained loyal to the government. These suspicions were perhaps well-placed, given that radio operators on loyal ships passed on operational plans to the mutineers. Enlisted men on ships that remained in government hands were reduced wherever possible, and officers took over all of the positions that would be involved in direct combat. Further complicating matters were weapon supplies, such as the destroyer's torpedoes. These could not be fired without Percussion cap, firing caps, yet the caps were not where they were supposed to be. When they were located and delivered, they did not fit the newer torpedoes on board the destroyers. The correct caps were fitted only 48 hours after the rebellion began. Felisberto and his fellow sailors demanded an end to what they called the "slavery" being practiced by the navy, most notably the continued use of whipping despite its ban in every other Western nation. Though navy officers and the president were staunchly opposed to any sort of amnesty and made plans to attack the rebel-held ships, many legislators were supportive. Over the next three days, both houses of the Brazilian National Congress, led by the influential senator Rui Barbosa, Ruy Barbosa, passed a general bill granting amnesty to all involved and ending the use of corporal punishment. In the aftermath of the revolt, the two Brazilian dreadnoughts were disarmed by the removal of their guns' breechblocks. The revolt and consequent state of the navy, which was essentially unable to operate for fear of another rebellion, caused many leading Brazilians, including the president, prominent politicians like Barbosa and the Baron of Rio Branco, and the editor of the most respected newspaper in Brazil, ''Jornal do Commercio'', to question the use of the new ships and support their sale to a foreign country. The British ambassador to Brazil, W.H.D. Haggard, was ecstatic at Rio Branco's about-face, saying "This is indeed a wonderful surrender on the part of the man who was answerable for the purchase and who looked upon them as the most cherished offspring of his policy." Shortly before the vote on the amnesty bill, Ruy Barbosa emphatically outlined his opposition to the ships: In the end, the president and cabinet decided against selling the ships because they feared it would hurt them politically. This came despite a consensus agreeing that the ships should be disposed of, possibly to fund smaller warships capable of traversing Brazil's many rivers.Grant, ''Rulers, Guns, and Money'', 159. The executive's apprehension was heightened by Barbosa's speech given before the revolt's end, as he also used the occasion to attack the government, or what he called the "brutal militaristic regime". Still, the Brazilians ordered Armstrong to cease working towards laying down their third dreadnought, which induced the Argentine government to not pick up their contractual option for a third dreadnought, and the United States' ambassador to Brazil cabled home to state that the Brazilian desire for naval preeminence in Latin America was quelled, though this proved to be short-lived. Although the ''Minas Geraes'' class remained in Brazilian hands, the mutiny had a clear detrimental effect on the navy's readiness: by 1912, an Armstrong agent stated that the ships were in terrible condition, with rust already forming on turrets and boilers. The agent believed it would cost the Brazilian Navy around £700,000 to address these issues. Haggard tersely commented, "These ships are absolutely useless to Brazil", a sentiment echoed by ''Proceedings''. Despite the government's refusal to sell the two ''Minas Geraes''-class ships and subsequent support for acquiring ''Rio de Janeiro'', some historians credit the rebellion, combined with the Baron of Rio Branco's death in 1912, as major factors in the Brazilian government's decision (which was possibly made by January 1913, but certainly by September) to sell the ship to the Ottomans.

Attempted foreign purchases and sales

After ''Rio de Janeiro'' was purchased by the Ottoman Empire, the Argentine government bowed to popular demand and began to seek a buyer for their two dreadnoughts. The money received in return would have been devoted to internal improvements. Three bills directing that the battleships be sold were introduced into the Argentine National Congress in mid-1914, but all were defeated. Still, the British and Germans expressed worries that the ships could be sold to a belligerent nation, while the Russian, Austrian, Ottoman, Italian, and Greek governments were all reportedly interested in buying both ships. The Greek government, embroiled in a Greco–Ottoman dreadnought race, dreadnought race with the Ottoman Empire, was particularly keen to acquire one of the South American dreadnoughts. The ''New-York Tribune'' reported in late April 1913 that the Argentine government had rejected a Greek $17.5 million offer for ''Moreno'' alone, which would have netted them a large profit over the original construction cost of the ships ($12 million). The Greek appetite to acquire one of these ships only grew after the surprise Ottoman acquisition of ''Rio de Janeiro'' gave them what one contemporary commentator called "assure[d] naval superiority". To them, the problem was clear: with ''Rio de Janeiro'', the Ottomans would possess two dreadnoughts by the end of 1914 (the other being ''Reşadiye'', later taken over by the British and renamed ). To oppose them, Greece would only have , scheduled for completion months afterwards (March 1915), and two utterly obsolete pre-dreadnoughts, and , purchased from the United States in May 1914 to avert what seemed to be an imminent war. The United States, worried that its neutrality would not be respected and its technology would be released for study to a foreign country, put diplomatic pressure on the Argentine government to keep the ships, which it eventually did. News outlets also reported in late 1913 and early 1914 that Greece had reached an accord to purchase Chile's first battleship as a counterbalance to the Ottoman acquisition of ''Rio de Janeiro'', but despite a developing sentiment within Chile to sell one or both of the dreadnoughts, no deal was struck. In each of the countries involved in the South American dreadnought arms race, movements arose that advocated the sale of the dreadnoughts to redirect the substantial amounts of money involved toward what they viewed as more worthy pursuits.Livermore, "Battleship Diplomacy," 45. These costs were rightfully viewed as enormous. After the ''Minas Geraes'' class was ordered, a Brazilian newspaper equated the initial purchase cost for the original three ships as equaling 3,125 miles of Track (rail transport), railroad tracks or 30,300 Homestead (buildings), homesteads. Naval historian Robert Scheina put the price at Pound sterling, £6,110,100 without accounting for ammunition, which was £605,520, or necessary upgrades to docks, which was £832,000. Costs for maintenance and related issues, which in the first five years of ''Minas Geraes''s and ''São Paulo''s commissioned lives was about 60 percent of the initial cost, only added to the already staggering sum of money. The two ''Rivadavia''s were purchased for nearly a fifth of the Argentine government's yearly income, a figure which did not include the later in-service costs. Historian Robert K. Massie rounded the figure to a full quarter of each government's annual income. In addition, the nationalistic sentiments that exacerbated the naval arms race gave way to slowing economies and negative public opinions which came to support investing inside the country instead. Commenting on this, the United States' United States Ambassador to Chile, Minister to Chile, Henry Prather Fletcher, wrote to United States Secretary of State, Secretary of State William Jennings Bryan: "Since the naval rivalry began in 1910, financial conditions, which were none too good then, have grown worse; and as time approaches for the final payment, feeling has been growing in these countries that perhaps they are much more in need of money than of battleships."

Aftermath: post-war expansions

The First World War effectively ended the dreadnought race, as all three countries suddenly found themselves unable to acquire additional warships. After the conflict, the race never resumed, but many plans for post-war naval expansions and improvements were postulated by the Argentine, Brazilian, and Chilean governments. The Brazilians modernized ''Minas Geraes'', ''São Paulo'', and the two cruisers acquired under the 1904 plan, and , between 1918 and 1926.English, ''Armed Forces'', 110. This was sorely needed, as all four ships were not ready to fight a modern war. Although the Brazilian government intended to send ''São Paulo'' overseas for service in the Grand Fleet, both it and ''Minas Geraes'' had not been modernized since entering service, meaning they were without essential equipment like modern fire-control system, fire control. Maintenance on the two ships had also been neglected, which was most clearly illustrated when ''São Paulo'' was sent to New York for modernization: fourteen of its eighteen boilers broke down, and the ship required the assistance of the American battleship and cruiser to continue the voyage. The two cruisers were in "deplorable" condition, as they were able to steam at a top speed of only thanks to a desperate need for new Condenser (heat transfer), condensers and boiler tubes. With repairs, though, both participated in the war as part of Brazilian cruiser Bahia#First World War, Brazil's main naval contribution to the conflict. The Brazilian Navy also made plans to acquire additional ships in the 1920s and 30s, but both were sharply reduced from the original proposals. In 1924, they contemplated constructing a relatively modest number of warships, including a heavy cruiser, five destroyers, and five submarines. In the same year, the newly arrived American naval mission, led by Rear Admiral Carl Theodore Vogelgesang, tendered a naval expansion plan of 151,000 tons, divided between battleships (70,000), cruisers (60,000), destroyers (15,000), and submarines (6,000). The United States' State Department, led by Secretary of State Charles Evans Hughes and fresh from negotiating the Washington Naval Treaty, was not keen on seeing another dreadnought race, so Hughes quickly moved to thwart the efforts of the mission. Only one Italian-built submarine, , was acquired during this time. By the 1930s, the international community believed that the bulk of the Brazilian Navy was "obsolete" and were old enough to no longer be "considered effective". Still, ''Minas Geraes'' was modernized a second time at the Arsenal de Marinha do Rio de Janeiro, Rio de Janeiro Naval Yard from June 1931 to April 1938. Plans to give similar treatment to ''São Paulo'' were dropped due to the ship's poor material condition. During the same period, the Brazilian government looked into purchasing cruisers from the United States Navy but ran into the restrictions of the Washington and London Naval Treaty, London Naval Treaties, which placed restrictions on the sale of used warships to foreign countries. The Brazilians eventually contracted for six destroyers from the United Kingdom. In the interim, a plan to lease six destroyers from the United States was abandoned after it was met with strong opposition from both international and American institutions. Three s, based on the American , were laid down in Brazil with six minelayers, all of which were launched between 1939 and 1941. Though both programs required foreign assistance and were consequently delayed by the war, all nine ships were completed by 1944. In the 1920s, nearly all of the major warships of the Argentine Navy were obsolete; aside from ''Rivadavia'' and ''Moreno'', the newest major warship had been constructed at the end of the nineteenth century. The Argentine government recognized this, and as part of holding on to their naval superiority in the region, they sent ''Rivadavia'' and ''Moreno'' to the United States in 1924 and 1926 to be modernized. In addition, in 1926 the Argentine Congress allotted 75 million Argentine peso#Gold and silver pesos, 1881–1969, gold pesos for a naval building program. This resulted in the acquisition of three cruisers (the Italian-built and the British-built ), twelve destroyers (the Spanish-built and the British-built / classes), and three submarines (the Italian-built ). Chile began to seek additional ships to bolster its fleet in 1919, and the United Kingdom eagerly offered many of its surplus warships. This action worried nearby nations, who feared that a Chilean attempt to become the region's most powerful navy would destabilize the area and start another naval arms race. Chile asked for ''Canada'' and ''Eagle'', the two battleships they ordered before the war, but the cost of converting the latter back to a battleship was too high. Planned replacements included the two remaining s, but a leak to the press of the secret negotiations to acquire them caused an uproar within Chile itself over the value of such ships. In the end, Chile only bought ''Canada'' and four destroyers in April 1920—all ships that had been ordered from British yards by the Chilean government before 1914 but were purchased by the Royal Navy after the British entered the First World War—for relatively low prices. ''Canada'', for instance, was sold for just £1,000,000, less than half of what had been required to construct the ship. Over the next several years, the Chileans continued to acquire more ships from the British, like six destroyers (the ) and three submarines (the ). ''Almirante Latorre'' was modernized in the United Kingdom from 1929 to 1931 at the HMNB Devonport, Devonport Dockyard.Whitley, ''Battleships'', 33. A recession and a Chilean naval mutiny of 1931, major naval revolt then led to the battleship's ''de facto'' inactivation in the early 1930s. In the late 1930s, the Chilean government inquired into the possibility of constructing an cruiser in the United Kingdom, Italy, Germany, or Sweden, but this did not lead to an order. A second plan to acquire two small cruisers was dropped with the beginning of the Second World War.English, ''Armed Forces'', 149. Soon after the attack on Pearl Harbor, the United States attempted to purchase ''Almirante Latorre'', two destroyers, and a submarine tender, probably because the Chilean Navy had a reputation for keeping its ships in top-quality condition, but the offer was rejected. During the Second World War, the three major South American navies found themselves unable to acquire major warships; they were only able to do so again after the conflict, when the United States and United Kingdom had many unnecessary or surplus warships. The war had proved the obsolete status of battleships, so the South American navies were seeking cruisers, destroyers, and submarines, yet they ran into political difficulties in acquiring anything larger than s and s. They were only able to acquire them when the Red Scare began to strongly affect American and international politics. One of the deals reached under the Mutual Defense Assistance Act (1949) sold six American light cruisers to Argentina, Brazil, and Chile in January 1951. While this bolstered the navies of important South American allies of the United States, which would be Inter-American Treaty of Reciprocal Assistance, treaty-bound to assist the United States in any war, naval historian Robert Scheina argues that the American government also used the opportunity to significantly affect the traditional naval rivalry among the three countries. The warships sold unilaterally changed the naval outlook of all three nations, leading them to accept parity (as opposed to the Argentine pre-war stipulation that its fleet be equal to Brazil's and Chile's combined). The venerable dreadnoughts of South America soldiered on for a short time after the war. The US Navy's ''All Hands'' magazine reported in a series of 1948 articles that all save ''São Paulo'' and ''Almirante Latorre'' were still in active service; the former had been decommissioned and the latter undergoing repairs. With the influx of the modern cruisers, frigates, and corvettes, however, the battleships were quickly sold for ship breaking, scrap. The Brazilian Navy was the first to dispose of its dreadnoughts, the oldest in the world by that time. ''São Paulo'' was sold for scrap in 1951 but sank in a storm north of the Azores while under tow. ''Minas Geraes'' followed two years later and was broken up in Genoa beginning in 1954. Of the Argentine dreadnoughts, ''Moreno'' was towed to Japan for scrapping in 1957, and ''Rivadavia'' was broken up in Italy beginning in 1959. ''Almirante Latorre'', inactive and unrepaired after a 1951 explosion in its engine room, was decommissioned in October 1958 and followed ''Moreno'' to Japan in 1959.Brook, ''Warships for Export'', 148; Whitley, ''Battleships'', 33; "Acorazado Almirante Latorre," ''Unidades Navales''.

Ships involved





* Breyer, Siegfried. ''Battleships and Battle Cruisers, 1905–1970''. Translated by Alfred Kurti. Garden City, NY: Doubleday, 1973. . * Brook, Peter. ''Warships for Export: Armstrong Warships, 1867–1927''. Gravesend, UK: World Ship Society, 1999. . OCLC . * Brown, David. "HMS ''Eagle''." In ''Profile Warship'', edited by Antony Preston, 249–72. Windsor, UK: Profile Publishing, 1973. OCLC . * Budzbon, Przemysław. "Russia." In Gardiner and Gray, ''Conway's 1906–21'', 291–325. * Burt, R. A. ''British Battleships of World War One''. Annapolis, MD: Naval Institute Press, 1986. . OCLC * Campbell, N.J.M. "Germany." In Gardiner and Gray, ''Conway's 1906–21'', 134–89. *
Encyclopædia Britannica
'. 11th ed. 29 vols. Cambridge: Cambridge University Press, 1910–11. * English, Adrian J. ''Armed Forces of Latin America''. London: Jane's Publishing Inc., 1984. . OCLC . * Feron, Luc. "The Cruiser Dupuy-de-Lôme." In ''Warship 2011'', edited by John Jordan, 33–47. London: Conway, 2011. . OCLC . * Gardiner, Robert and Roger Chesneau, eds. ''Conway's All the World's Fighting Ships: 1922–1946''. London: Conway Maritime Press, 1980. . OCLC . * Gardiner, Robert and Randal Gray, eds. ''Conway's All the World's Fighting Ships: 1906–1921''. Annapolis, MD: Naval Institute Press, 1985. . OCLC . * Grant, Jonathan A. ''Rulers, Guns, and Money: The Global Arms Trade in the Age of Imperialism''. Cambridge, MA: Harvard University Press, 2007. . OCLC . * Hough, Richard. ''Dreadnought: A History of the Modern Battleship''. New York: Macmillan Publishing, 1975. First published in 1964 by Michael Joseph and Macmillan Publishing. OCLC . * ———. ''The Big Battleship''. London: Michael Joseph, 1966. OCLC . * Love, Joseph L. ''The Revolt of the Whip''. Stanford, CA: Stanford University Press, 2012. . OCLC . * Mach, Andrzej V. "Greece." In Gardiner and Gray, ''Conway's 1906–21'', 382–87. * Martin, Percy Allen. ''Latin America and the War''. Gloucester, MA: Peter Smith, 1967. First published in 1925 by Johns Hopkins Press. OCLC . * Martins Filho, João Roberto. ''A marinha brasileira na era dos encouraçados, 1895–1910'' [''The Brazilian Navy in the Era of Dreadnoughts, 1895–1910'']. Rio de Janeiro: Fundãçao Getúlio Vargas, 2010. . OCLC . * Robert K. Massie, Massie, Robert K. ''Castles of Steel: Britain, Germany, and the Winning of the Great War at Sea''. New York: Random House, 2003. . OCLC . * Morgan, Zachary R. "The Revolt of the Lash, 1910." In ''Naval Mutinies of the Twentieth Century: An International Perspective'', edited by Christopher M. Bell and Bruce A. Elleman, 32–53. Portland, Oregon: Frank Cass Publishers, 2003. . OCLC . * Oakenfull, J.C
''Brazil in 1912''
London: Robert Atkinson Limited, 1913. OCLC . * Parkes, Oscar. ''British Battleships''. Annapolis, MD: Naval Institute Press, 1990. First published in 1957 by Seeley Service. . OCLC . * Preston, Antony. "Great Britain." In Gardiner and Gray, ''Conway's 1906–21'', 1–104. * Scheina, Robert L. "Argentina." In Gardiner and Gray, ''Conway's 1906–21'', 400–03. * ———. "Argentina." In Gardiner and Chesneau, ''Conway's 1922–46'', 419–21. * ———. "Brazil." In Gardiner and Gray, ''Conway's 1906–21'', 403–07. * ———. "Brazil." In Gardiner and Chesneau, ''Conway's 1922–46'', 416–18. * ———. "Ecuador." In Gardiner and Gray, ''Conway's 1906–21'', 409–10. * ———. ''Latin America: A Naval History, 1810–1987''. Annapolis, MD: Naval Institute Press, 1987. . OCLC . * ———. "Peru." In Gardiner and Gray, ''Conway's 1906–21'', 414. * ———. "Uruguay." In Gardiner and Gray, ''Conway's 1906–21'', 424–25. * ———. "Venezuela." In Gardiner and Gray, ''Conway's 1906–21'', 425. * Sondhaus, Lawrence. ''Naval Warfare, 1815–1914''. London: Routledge, 2001. . OCLC . * Viana Filho, Luís. ''A vida do Barão do Rio Branco''. São Paulo: Livraria Martins, 1967. First published in 1959 by Livraria Martins. OCLC . * Whitley, M.J. ''Battleships of World War Two: An International Encyclopedia''. Annapolis, MD: Naval Institute Press, 1998. . OCLC .

Journal articles

* Alger, Philip.
Professional Notes
" ''Proceedings'' 34, no. 3 (1908): 1050–90. OCLC . * ———.
Professional Notes
" ''Proceedings'' 36, no. 3 (1910): 857–919. OCLC . * Austin, H.O.
Brazil: Small, Modern Ships
" ''All Hands'' no. 375 (May 1948): 16–17. OCLC . . * ———.
Largest South American Navy
" ''All Hands'' no. 378 (August 1948): 14–16. . * ———.
The Fleets of Chile and Peru
" ''All Hands'' no. 379 (September 1948): 24–26. . *
" ''Journal of the American Society of Naval Engineers'' 20, no. 3 (1908): 833–36. OCLC . :
" ''Journal of the American Society of Naval Engineers'' 22, no. 3 (1910): 999–1002. OCLC . *
Brazilian Battleship 'Minas Geraes'—Most Powerful Fighting Ship Afloat
" ''Scientific American'' 99, no. 24 (1908): 428–29. OCLC . *
British-Brazilian Warships
" ''Navy'' (Washington) 2, no. 1 (1908): 11–12. OCLC . * Earle, Ralph.
Professional Notes
" ''Proceedings'' 38, no. 1 (1912): 303–80. OCLC . *
Fleets in Preparation
" ''Proceedings'' 31, no. 3 (1905): 740. OCLC . * Gill, C.C.
Professional Notes
" ''Proceedings'' 40, no. 1 (1914): 186–272. OCLC . * ———.
Professional Notes
" ''Proceedings'' 40, no. 2 (1914): 495–618. OCLC . * ———.
Professional Notes
" ''Proceedings'' 40, no. 3 (1914): 835–947. OCLC . * ———.
Professional Notes
" ''Proceedings'' 40, no. 4 (1914): 1175–1266. OCLC . * Heinsfeld, Adelar.
Falsificando telegramas: Estanislau Severo Zeballos e as relações Brasil-Argentina no início século XX
" ''Vestígios do passado: a história e suas fontes''. Proceedings from the IX Encontro Estadual de História of the Associação Nacional de História, Seção Rio Grande do Sul. * Hislam, Percival A.
A Century of Dreadnoughts
" ''Scientific American'' 111, no. 9 (1914): 146–47. OCLC . * Hutchinson, Lincoln.
Coffee 'Valorization' in Brazil
" ''Quarterly Journal of Economics'' 23, no. 3 (1909): 528–35. OCLC * Kaldis, William Peter.
Background for Conflict: Greece, Turkey, and the Aegean Islands, 1912–1914
" ''Journal of Modern History'' 51, no. 2 (1979): D1119–D1146. OCLC . * Lambuth, David.
The Naval Comedy and Peace Policies in Brazil
" ''Independent'' 69 (1910): 1430–33. OCLC . * Livermore, Seward W.
Battleship Diplomacy in South America: 1905–1925
" ''Journal of Modern History'' 16, no. 1 (1944): 31–48. OCLC . * ———.
The American Navy as a Factor in World Politics, 1903–1913
" ''American Historical Review'' 63, no. 4 (1958): 863–79. OCLC . * Martins Filho, João Roberto.
Colossos do mares
[Colossuses of the Seas]." ''Revista de História da Biblioteca Nacional'' 3, no. 27 (2007): 74–77. OCLC . * Mead, Edwin D.
Reaction in South America
" ''Advocate of Peace'' 70, no. 10 (1908): 238–41. OCLC . * Montenegro, Guillermo J. "An Argentinian Naval Buildup in the Disarmament Era: The Naval Procurement Act of 1926." In ''Warship 2002–2003'', edited by Antony Preston, 116–25. London: Conway Maritime Press, 2003. . OCLC . Also published by th
Universidad del Centro de Estudios Macroeconómicos de Argentina
Mystery of the Brazilian 'Dreadnoughts'
" ''Literary Digest'' 37, no. 30 (1908): 102–03. OCLC . *
New Peruvian Warships
" ''Journal of the American Society of Naval Engineers'' 19, no. 2 (1907): 581–83. OCLC . : Robinson, Walton L.
The Brazilian Navy in the World War
" ''Proceedings'' 62, no. 12 (1936): 1712–20. OCLC . * Sater, William F.
The Abortive Kronstadt: The Chilean Naval Mutiny of 1931
" ''Hispanic American Historical Review'' 60, no. 2 (1980): 239–68. OCLC . * Somervell, Philip.
Naval Affairs in Chilean Politics, 1910–1932
" ''Journal of Latin American Studies'' 16, no. 2 (1984): 381–402. OCLC . * Sturton, Ian. "Re: The Riachuelo." ''Warship International'' 7, no. 3 (1970): 205. OCLC . *
The Brazilian Battleship 'Minas Geraes'
" ''Journal of the United States Artillery'' 33, no. 2 (1910): 179–88. OCLC . *
The Brazilian Battleship 'Minas Geraes'
" ''Scientific American'' 102, no. 12 (1910): 240–41. OCLC . *
The Brazilian Dreadnoughts
" ''International Marine Engineering'' 13, no. 8 (1908): 362–63. OCLC . *
The Brazilian 'Dreadnoughts'
" ''Navy'' (Washington) 2, no. 6 (1908): 13–14. OCLC . *
The Chilean Dreadnought Almirate Latorre
" ''Journal of the American Society of Naval Engineers'' 26, no. 1 (1914): 317–18. OCLC . *
The Mystery of the Great Brazilian Dreadnoughts
" ''World's Work'' 17, no. 1 (1908): 10867–68. OCLC . * Topliss, David. "The Brazilian Dreadnoughts, 1904–1914." ''Warship International'' 25, no. 3 (1988): 240–89. OCLC . *
The Reported Purchase of Battleships
" ''Navy'' (Washington) 2, no. 8 (1908): 39. OCLC . *
The Status of South American Navies
" ''Journal of the American Society of Naval Engineers'' 21, no. 1 (1909): 254–57. OCLC . * Vanterpool, Alan. "The 'Riachuelo'." ''Warship International'' 6, no. 2 (1969): 140–41. OCLC .


* The Argus (Australia), ''Argus'' (Melbourne) – * ''Boston Evening Transcript'' – * The Day (New London), ''Day'' (New London) – * ''Dundee Courier'' (Scotland) – * Evening Telegraph (Dundee), ''Evening Telegraph'' (Dundee, Scotland) – * The Evening Post (New Zealand), ''Evening Post'' (Wellington) – * ''Japan Weekly Mail'' (Yokohama) – * ''New York Herald'' – * The New York Times, ''New York Times'' – * ''New-York Tribune'' – * Pittsburgh Press, ''Pittsburg Press'' – * ''Gisborne Herald, Poverty Bay Herald'' (Gisborne, New Zealand) – * The Sydney Mail, ''Sydney Mail'' – * The Sydney Morning Herald, ''Sydney Morning Herald'' – * The Times, ''Times'' (London)


E Minas Geraes
" ''Navios De Guerra Brasileiros''. Accessed 1 March 2012. *

" ''Navios De Guerra Brasileiros''. Accessed 1 March 2012. *

" ''Navios De Guerra Brasileiros''. Accessed 1 March 2012.

Official sources


[Battleship Almirante Latorre]." ''Unidades Navales''. Armada de Chile. Last modified 8 June 2008. *
Bahia (3º)
" ''Serviço de Documentação da Marinha – Histórico de Navios''. Diretoria do Patrimônio Histórico e Documentação da Marinha, Departamento de História Marítima. Accessed 30 March 2016. * Di Biassi, Francesco Venturini.
Ley de Armamento Naval Nº 6283
[Naval Armament Law No. 6283]." Departamento de Estudios Históricos Navales. Accessed 30 March 2016. *
Minas Geraes I
" ''Serviço de Documentação da Marinha – Histórico de Navios''. Diretoria do Patrimônio Histórico e Documentação da Marinha, Departamento de História Marítima. Accessed 30 March 2016. *
Rio Grande do Sul I
" ''Serviço de Documentação da Marinha – Histórico de Navios''. Diretoria do Patrimônio Histórico e Documentação da Marinha, Departamento de História Marítima. Accessed 30 March 2016. *
São Paulo I
" ''Serviço de Documentação da Marinha – Histórico de Navios''. Diretoria do Patrimônio Histórico e Documentação da Marinha, Departamento de História Marítima. Accessed 30 March 2016.

Further reading

* Alsina Jr., João Paulo Soares. ''Rio-Branco, grande estratégia e o poder naval''. Rio de Janeiro: FGV Editora, 2015. . . (in Portuguese) * Burzaco, Ricardo and Patricio Ortíz. ''Acorazados y Cruceros de la Armada Argentina, 1881–1982''. Buenos Aires: Eugenio B. Ediciones, 1997. . . (in Spanish) * Erhart, Edward.
The 'Loose Dreadnoughts': South America's Struggle for Naval Preeminence
" Master's thesis, East Carolina University, 2019. * Garay, Cristián.
Las carreras armamentistas navales entre Argentina, Chile y Brasil (1891–1923)
" ''Historia Crítica'', no. 48 (September 2012): 39–57. (in Spanish) * Martins Filho, João Roberto. "The Battleship ''Minas Geraes'' (1908)" in Bruce Taylor (editor), ''The World of the Battleship: The Lives and Careers of Twenty-One Capital Ships of the World's Navies, 1880–1990''. Barnsley: Seaforth Publishing, 2018. . . * Morgan, Zachary R. ''Legacy of the Lash: Race and Corporal Punishment in the Brazilian Navy and the Atlantic World''. Bloomington: Indiana University Press, 2014. . .

External links

British diplomatic documents
relating to the dreadnought race (FO 508/8
Adam Matthew
subscription required)
Encouraçados Minas Gerais e São Paulo
''Minas Geraes'' slideshow
''Minas Geraes''
on Flickr (LOC)

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

* [https://www.flickr.com/photos/library_of_congress/tags/aramoreno/ ARA ''Moreno''] on Flickr (LOC)
El ''Almirante Latorre''
on Flickr {{featured article Battleships Geopolitical rivalry History of Argentina (1880–1916) Modern history of Brazil History of Chile Military history of Argentina Military history of Brazil Military history of Chile Military history of Latin America Military history of South America Technological races