Chilean battleship Almirante Latorre

Almirante Latorre in a Balboa, Panama, drydock on 17 January 1921, while voyaging from the United Kingdom to Chile

After the end of the war in Europe, Chile began to seek additional ships to bolster its fleet. The United Kingdom offered many of its surplus warships, including the two remaining Invincible-class battlecruisers.[upper-alpha 4] The news that Chile could possibly acquire those two capital ships started an uproar in the country, with naval officers publicly denouncing such an action and instead promoting the virtues of submarines and aircraft on the basis of lower costs and their performance in the First World War.[24] Other nations of South America worried that an attempt to regain the title of "the first naval power in South America", as The New York Times put it, would start another naval arms race.[25][26]

In the end, Chile purchased only Canada and four destroyers in April 1920, all of which had been ordered by Chile prior to the war's outbreak and requisitioned by the British.[26] The total cost of the five ships was less than a third of what Chile was due to pay for Almirante Latorre in 1914.[10] Canada was renamed Almirante Latorre once again and formally handed over to the Chilean government on 27 November 1920.[18] It departed Plymouth the same day with two of the destroyers, Riveros and Almirante Uribe,[27] under the command of Admiral Luis Gomez Carreño.[10] They arrived in Chile on 20 February 1921, where they were welcomed by Chile's president, Arturo Alessandri. Almirante Latorre was made the flagship of the navy.[10]

In its capacity as flagship of the Chilean Navy, Almirante Latorre was frequently utilized by the president for various functions. In the aftermath of the magnitude 8.5 1922 Vallenar earthquake, Almirante Latorre was used to transport Alessandri to the affected area. The ship also brought necessary supplies (including shelter, food, and money) for those affected.[10][28] By 1923, Chile only had Almirante Latorre, a cruiser, and five destroyers in commission, leading The New York Times to remark "experts would probably place Chile third in potential sea power [after Brazil and Argentina]". While Almirante Latorre was individually more powerful than the Brazilian or Argentine dreadnoughts, they had two each to Chile's one. Compounding this was a lack of modern cruisers to accompany the lone dreadnought.[29] In 1924, Almirante Latorre hosted the president again when he visited Talcahuano for the grand opening of a new naval drydock there.[10] After the fall of the January Junta in 1925, the dreadnought hosted the returning President Alessandri during a fleet review in Valparaíso; while on board, he gave a speech to senior naval officials to assure them that his new government "was for all Chileans, and not partisan in its inspiration".[30] In September, the last month of his term, Alessandri received the United Kingdom's Edward, Prince of Wales, on board the battleship. The visit briefly quelled domestic unrest, and it marked the beginning of negotiations for a British naval mission, which arrived in the following year.[31]

Almirante Latorre was sent to the United Kingdom for a modernization at the Devonport Dockyard in 1929. Departing Chile on 15 May, it traveled past Balboa before traversing the Panama Canal nine days later. After refueling at Port of Spain on 28 May, the dreadnought continued across the Atlantic, passing the Azores before arriving in Plymouth on 24 June.[32] Major alterations included rebuilding the bridge, updating the main battery fire control to more modern standards, adding fire control for the secondary armament, and replacing the ship's steam turbine engines. Also added were a new mast between the third and fourth turrets, anti-torpedo bulges similar to the British Queen Elizabeth-class battleships, and new anti-aircraft guns.[18] Nearly two years after the modernization began, Almirante Latorre sailed back to Valparaíso on 5 March 1931 and put in on 12 April. Two 33-long-ton (34 t) tug boats, acquired for use in the harbors of Punta Arenas and Valparaíso, were carried on the battleship's deck during its voyage back to Chile.[32]

Almirante Latorre from the bow, date unknown.

Despite the goodwill brought on by the removal of the authoritarian[33] President Carlos Ibáñez del Campo in July 1931, Chile could not overcome the Great Depression's severe economic effects, and wages for civil servants making over 3,000 pesos a year were cut by 12–30 percent to reduce government expenditures. This triggered a severe reaction among the sailors of the navy, who had already suffered a 10 percent salary cut and 50 percent loss in overseas bonuses. Various members of the crew on board Almirante Latorre, but no officers, met on 31 August and decided that a mutiny was the best course of action.[34][35][36]

Shortly after midnight on 1 September, the junior crew members of Almirante Latorre, an armored cruiser (O'Higgins), seven destroyers, and a few submarines took over their ships while many of their shipmates were watching a boxing tournament in La Serena. They imprisoned the officers, most without conflict, and secured the ships by about 02:00. They elected a committee, the Estado Mayor de Tripulacion, to take control of the mutiny. Later that day, at 16:55, the mutineers radioed the minister of the navy, declaring that they were acting on their own accord, as opposed to acting in concert with a militant political party or communist insurgents. They asked for their full salaries to be restored and the punishment of those who had plunged Chile into a depression, while also stating that they would not use force to achieve these goals.[36][37]

Just before midnight on 2 September, the mutineers messaged the Chilean government with a more "sophisticated"[38] list of twelve demands.[upper-alpha 5] Meanwhile, further south, junior members of the navy in the main naval base of Talcahuano joined the mutiny, taking several vessels in the process. Several of these sailed north to join the other rebels, while two cruisers, a few destroyers and submarines remained to guard the base. Other bases joined the now-full-fledged rebellion as well, including the Second Air Group based in Quintero. With so many rebels appearing, it was feared by many that the plethora of unemployed workers would join.[upper-alpha 6] The government attempted to solicit aid from the United States in the form of military intervention or war materiel (including two submarines and bombs capable of penetrating the armor of Almirante Latorre), but they were rebuffed both publicly and privately. Acting Vice President Manuel Trucco now found himself in an undesirable position; he had to defeat the rebels before more units joined and bolstered their forces, but if he was too harsh, there was a risk that the populace would think that his policies were too similar to the former dictator Ibáñez del Campo. Trucco decided on a path of reconciliation. He sent a naval admiral, Edgardo von Schroeders, to negotiate with the mutineers. They met on board Almirante Latorre, where von Schroeders, seeing a potential split between sailors angry over their pay versus others with a more political agenda, tried to divide them along these lines and get them to surrender. However, a plea from the approaching southern fleet, asking for them to wait before any possible settlement, sealed the matter for the time being and von Schroders flew back to the capital.[41]

September marked a turn in the rebels' fortunes, despite the arrival of the southern fleet on 4 September. All of their land gains were taken by government forces, leaving only the fleet in the mutineers' hands. By the next day, an air strike was mounted by government forces. The only damage done was to the submarine H4, which was unable to dive, but at least one bomb landed about 50 yards (46 m) from Almirante Latorre. Despite the scant damage, the attack broke the mutineers' spirits; they quickly offered to send a delegation to Santiago to discuss terms, but the government, bolstered by its land victories, refused. While the mutiny devolved into arguing and anarchy, individual ships began leaving the bay and setting sail for Valparaíso, and the rest soon followed. Almirante Latorre ended up in the Bay of Tongoy with Blanco Encalada. Seven crewmen on the dreadnought received death sentences, later commuted to life in prison.[42][43][44]

Looking down from Almirante Latorre's bridge on the bow turrets, date unknown.

Still in the midst of the depression, Almirante Latorre was deactivated at Talcahuano in 1933 to lessen government expenditures,[45] and only a caretaker crew was assigned to tend to the mothballed ship into the mid-1930s.[46][upper-alpha 7] In a 1937 refit in the Talcahuano dockyard, the aircraft catapult was taken off and anti-aircraft weaponry was added.[47] Almirante Latorre was never fully modernized, however, and by the Second World War its main battery was comparatively short-ranged and its armor protection, designed before the "all or nothing" principle was put into practice, was wholly inadequate.[48] Nevertheless, in 1939, US intelligence showed that the Soviet Union attempted to buy the ship,[49] and soon after Japan's attack on Pearl Harbor, the United States Government approached the Chilean naval attaché and the vice admiral heading Chile's naval commission to the United States with the aim of purchasing Almirante Latorre and a few destroyers to bolster the United States Navy. Both of these offers were declined,[32][50] and Almirante Latorre was used for neutrality patrols during the Second World War.[18]

After a 1951 accident in Almirante Latorre's engine room killed three crewmen, the ship was kept moored in Talcahuano as a storage hulk for fuel oil.[32] It was decommissioned in October 1958, and was sold to Mitsubishi Heavy Industries in February 1959 for $881,110 to be broken up for scrap.[9][10] On 29 May 1959, to the salutes of the assembled Chilean fleet, the old dreadnought was taken under tow by the tug Cambrian Salvos,[10][32] and reached Yokohama, Japan, at the end of August,[18][32][51][upper-alpha 8] though the scrapping process did not begin immediately on arrival.[18] A substantial amount of parts from Almirante Latorre were used in the restoration of the Mikasa, badly deteriorated after World War II, until 1961.[52]