The Battle of the Downs took place on 21 October 1639, during the Eighty Years' War. A Spanish fleet, commanded by Admiral Antonio de Oquendo, was decisively defeated by a Dutch force under Lieutenant-Admiral Maarten Tromp. Victory ended Spanish efforts to re-assert naval control over the English Channel and confirmed Dutch dominance of the sea lanes, while it is also alleged to be the first major action to feature line of battle tactics.
The Brazilian Navy is the naval service branch of the Brazilian Armed Forces, responsible for conducting naval operations.
The Battle of Cape St. Vincent was a naval encounter off Cape St. Vincent between a Liberal fleet under the command of British naval officer Charles Napier against a Miguelite fleet under the command of Portuguese naval officer Manuel Marreiros, which was fought on 5 July 1833 during the Liberal Wars and resulted in a decisive victory for the Liberal fleet. Over the course of the battle, the Liberal fleet, despite being significantly outnumbered by the Miguelite fleet and lacking any ships of the line compared to the Miguelite four, managed to close with the Miguelites, board their ships and engage in hand-to-hand combat. The early exchange of cannon fire between the two fleets went on for some time before Napier decided that his numerically inferior squadron could not last long against the Miguelite fleet, and sailed his ships directly towards the Miguelite fleet.
The Battle of the Basque Roads, also known as the Battle of Aix Roads, was a major naval battle of the Napoleonic Wars, fought in the narrow Basque Roads at the mouth of the Charente River on the Biscay coast of France. The battle, which lasted from 11–24 April 1809, was unusual in that it pitted a hastily-assembled squadron of small and unorthodox British Royal Navy warships against the main strength of the French Atlantic Fleet. The circumstances were dictated by the cramped, shallow coastal waters in which the battle was fought. The battle is also notorious for its controversial political aftermath in both Britain and France.
Admiral Joaquim Marques Lisboa, Marquis of Tamandaré was a Brazilian admiral of the Imperial Navy of Brazil. He dedicated his life to the Brazilian Navy, including a life-long membership in Brazil's Military and Justice Council, then Supreme Military Court, from its inception until 1891, when the Republican Government granted him leave.
John Pascoe Grenfell was a British officer of the Empire of Brazil. He spent most of his service in South America campaigns, initially under the leadership of Lord Cochrane and then Commodore Norton. He was the nephew of British politician Pascoe Grenfell and grandfather to General Sir John Grenfell Maxwell. In Brazil, he rose to the rank of admiral and for his achievements was made a knight grand cross of the Imperial Order of the Rose and a knight of the Imperial Order of the Southern Cross.
The Armed Forces of the Empire of Brazil were the overall unified military forces of the Empire of Brazil. The Brazilian military was first formed by Emperor Dom Pedro I to defend the new nation against the Portuguese in the Brazilian War of Independence. The Army and Armada were commissioned in 1822 with the objective of defeating and expelling the Portuguese troops from Brazilian soil.
The Atlantic campaign of 1806 was a complicated series of manoeuvres and counter-manoeuvres conducted by squadrons of the French Navy and the British Royal Navy across the Atlantic Ocean during the spring and summer of 1806, as part of the Napoleonic Wars. The campaign followed directly from the Trafalgar campaign of the year before, in which the French Mediterranean fleet had crossed the Atlantic, returned to Europe and joined with the Spanish fleet. On 21 October 1805, this combined force was destroyed by a British fleet under Lord Nelson at the Battle of Trafalgar, although the campaign did not end until the Battle of Cape Ortegal on 4 November 1805. Believing that the French Navy would not be capable of organised resistance at sea during the winter, the First Lord of the Admiralty Lord Barham withdrew the British blockade squadrons to harbour. Barham had miscalculated – the French Atlantic fleet, based at Brest, had not been involved in the Trafalgar campaign and was therefore at full strength. Taking advantage of the reduction in the British forces off the port, Napoleon ordered two heavy squadrons to sea, under instructions to raid British trade routes while avoiding contact with equivalent Royal Navy forces.
The siege of Malta, also known as the siege of Valletta or the French blockade, was a two-year siege and blockade of the French garrison in Valletta and the Three Cities, the largest settlements and main port on the Mediterranean island of Malta, between 1798 and 1800. Malta had been captured by a French expeditionary force during the Mediterranean campaign of 1798, and garrisoned with 3,000 soldiers under the command of Claude-Henri Belgrand de Vaubois. After the British Royal Navy destroyed the French Mediterranean Fleet at the Battle of the Nile on 1 August 1798, the British were able to initiate a blockade of Malta, assisted by an uprising among the native Maltese population against French rule. After its retreat to Valletta, the French garrison faced severe food shortages, exacerbated by the effectiveness of the British blockade. Although small quantities of supplies arrived in early 1799, there was no further traffic until early 1800, by which time starvation and disease were having a disastrous effect on the health, morale, and combat capability of the French troops.
The Algeciras campaign was an attempt by a French naval squadron from Toulon under Contre-Admiral Charles Linois to join a French and Spanish fleet at Cadiz during June and July 1801 during the French Revolutionary Wars prior to a planned operation against either Egypt or Portugal. To reach Cadiz, the French squadron had to pass the British naval base at Gibraltar, which housed the squadron tasked with blockading Cadiz. The British squadron was commanded by Rear-Admiral Sir James Saumarez. After a successful voyage between Toulon and Gibraltar, in which a number of British vessels were captured, the squadron anchored at Algeciras, a fortified port city within sight of Gibraltar across Gibraltar Bay. On 6 July 1801, Saumarez attacked the anchored squadron, in the First Battle of Algeciras. Although severe damage was inflicted on all three French ships of the line, none could be successfully captured and the British were forced to withdraw without HMS Hannibal, which had grounded and was subsequently seized by the French.
The First Chilean Navy Squadron was the heterogeneous naval force that terminated Spanish colonial rule in the Pacific and protagonized the most important naval actions of in the Latin American wars of independence. The Chilean revolutionary government organized the squadron in order to carry the war to the Viceroyalty of Perú, then the center of Spanish power in South America, and thus secure the independence of Chile and Argentina.
Galicia, was a Spanish 70-gun ship of the line of the Kingdom of Spain's Armada Real in service between 1751 and 1797.
The Imperial Brazilian Navy was the navy created at the time of the independence of the Empire of Brazil from the United Kingdom of Portugal, Brazil and the Algarves. It existed between 1822 and 1889 during the vacancy of the constitutional monarchy.
The capture of the frigate Esmeralda was a naval operation conducted on the night of 5 to 6 November 1820. A division of boats with sailors and marines of the First Chilean Navy Squadron, commanded by Thomas Cochrane, stealthily advanced towards Callao and captured the ship through a boarding attack. Esmeralda was the flagship of Spanish fleet and the main objective of the operation. She was protected by a strong military defense that the Royalists had organized in the port.
HMS Imperieuse was a 38-gun fifth-rate frigate of the Royal Navy. Built in Ferrol, Spain, for the Spanish Navy she was launched as Medea in 1797. In 1804 she was part of a squadron carrying gold from South America to Spain that was seized by the British while Spain and Britain were at peace. Medea was subsequently taken into service with the Royal Navy and was briefly named HMS Iphigenia before being renamed Imperieuse in 1805.
The steam frigate Amazonas was a frigate-type warship that served in the Imperial Brazilian Navy and, for a short period, in the Brazilian Navy after the Proclamation of the Republic in 1889. The frigate was built in the Thomas Wilson Sons & Co. shipyards in Birkenhead and Liverpool, England; it was launched in August 1851. The purchase of this vessel was part of an effort by the Empire of Brazil to obtain more modern ships, due to the country's lag with some foreign powers. Amazonas was commissioned in 1852.
The battle of Colonia del Sacramento consisted of a series of failed attempts made by admiral William Brown of capturing the town of Colonia del Sacramento, which was under Brazilian control and being sieged on land by insurgent Uruguayan forces, in the context of the Cisplatine War between the Empire of Brazil and the United Provinces of the Río de la Plata. The confrontations began in the morning of 26 February 1826 and ended on 14 March 1826.
Pedro I was a ship of the line of the Imperial Brazilian Navy. It was a third-rate, three-masted, two-decked, 74-gunned sailing ship. The ship was built by Antônio da Silva in the Bahia Navy Arsenal in Salvador for the Portuguese Navy in Colonial Brazil in 1763. First named Santo António e São José, it took part in several naval actions in the decades after its construction such as the bombardment of Algiers in 1784.
Dom Afonso was a steam frigate that served the Imperial Brazilian Navy, being the first steamship to serve in this navy. It was built in England under the supervision of chief of squad John Pascoe Grenfell and was named Dom Afonso in honor of Afonso, Prince Imperial of Brazil, son of emperor Pedro II of Brazil and empress Teresa Cristina.
Liberal was a corvette of the Imperial Brazilian Navy. She was originally built as a brig named Gaivota do Mar before joining the Brazilian cause during the war of independence, being renamed and converted to a corvette.
Empire of Brazil 
Kingdom of Portugal