He is generally considered a world conquest military genius, given his successful strategy: he attempted to close all the Indian Ocean naval passages to the Atlantic, Red Sea, Persian Gulf, and to the Pacific, transforming it into a Portuguese mare clausum established over the Ottoman power and their Muslim and Hindu allies .< ref >

* Afonso de Albuquerque, a Portuguese naval officer.

In 1943, during World War II, the Portuguese rules António de Oliveira Salazar leased air and naval bases in the Azores to the British Empire.

In 1809 an Anglo-Portuguese naval squadron took French Guiana ( ousting governor Victor Hugues ) and gave it to the Portuguese in Brazil.

Rival European powers began to make inroads in Asia as the Portuguese and Spanish trade in the Indian Ocean declined primarily because they had become hugely over-stretched financially due to the limitations on their investment capacity and contemporary naval technology.

The goal of Portuguese presence was not settlement but the establishment of naval bases that would give Portugal control of the Indian Ocean.

The Omani Arabs posed the most direct challenge to Portuguese influence in East Africa and besieged Portuguese fortresses, openly attacked naval vessels and expelled the remaining Portuguese from the Kenyan and Tanzanian coasts by 1730.

The next major foreign intervention in Bahrain came at the beginning of the 16th century when the Portuguese naval fleets arrived, quickly crushing the small local population in Manama and the surrounding areas.

The Portuguese discovery of the Cape of Good Hope in 1488 initiated a series of Ottoman-Portuguese naval wars in the Indian Ocean throughout the 16th century.

In the Indian Ocean, Suleiman led several naval campaigns against the Portuguese in an attempt to remove them and reestablish trade with India.

* Afonso de Albuquerque ( 1453 – 1515 ) was a Portuguese nobleman, naval general officer whose military and administrative activities conquered and established the Portuguese colonial empire in the Indian ocean.

It is the beginning of a four-year naval conflict between Almohads and Portuguese.

* December 16 – Afonso de Albuquerque, Portuguese naval general ( b. 1453 )

There was much sympathy for the Boers on mainland Europe and in October, President Kruger and members of the Transvaal government left Portuguese East Africa on the Dutch warship De Gelderland, sent by the Queen of the Netherlands Wilhelmina, who had simply ignored the British naval blockade of South Africa.

The Portuguese government impelled this even further by taking full advantage of this and by creating several important research centres in Portugal, where Portuguese and foreign experts made several breakthroughs in the fields of mathematics, cartography and naval technology.

But the Zamorin nonetheless refused to submit to Portuguese terms, and even ventured to hire a fleet of strong corsair warships to challenge Gama's armada ( which Gama managed to defeat in a naval battle before Calicut harbor ).

On 23 June 1661, a marriage treaty was signed, Catherine's dowry securing to England Tangier ( in North Africa ) and the Seven islands of Bombay ( the latter having a major influence on the development of the British Empire in India ), together with trading privileges in Brazil and the East Indies, religious and commercial freedom in Portugal and two million Portuguese crowns ( about £ 300, 000 ); while Portugal obtained military and naval support against Spain and liberty of worship for Catherine.

" Using the Canary Islands as a naval base, European, and at the time primarily Portuguese traders then began to move their activities down the western coast of Africa, performing raids in which slaves would be captured to be later sold in the Mediterranean.

Although initially successful in this venture, " it was not long before African naval forces were alerted to the new dangers, and the Portuguese ships began to meet strong and effective resistance ", with the crews of several of them being killed by African sailors, whose boats were better equipped at traversing the west African coasts and river systems.

It was a way to gain for themselves some of the wealth the Spanish and Portuguese were taking from the New World before beginning their own trans-Atlantic settlement, and a way to assert naval power before a strong Royal Navy emerged.

* 1517 – Seven Portuguese armed vessels led by Fernão Pires de Andrade meet Chinese officials at the Pearl River estuary.

The first residents all arrived on Portuguese vessels.

Until the 15th century, the Portuguese were limited to coastal cabotage navigation using barques and barinels ( ancient cargo vessels used in the Mediterranean ).

The development of the leucotomy procedure was the work of the Portuguese physician and neurologist António Egas Moniz, who was highly acclaimed for his work on cerebral angiography ( radiographical visual of the blood vessels in the brain ) in 1927.

Civil War within Kongo would lead to many of its subjects ending up as enslaved people in Portuguese and other European vessels.

In the early 20th century, with a well equipped seaport, with piers, quays, landing sheds and electric cranes, enabling large vessels to discharge cargoes direct into the railway trucks, Lourenço Marques developed under Portuguese rule and achieved great importance as a lively cosmopolitan city.

Fall River is well known for Lizzie Borden, Portuguese Culture, and Battleship Cove the world's largest collection of World War II naval vessels and the home of the.

The vessels operated within the SAM include the Maritime Police patrol boats, the Lifeguard Institute lifeboats, the harbourmasters harbour boats, the National Republican Guard Coastal Control Unit surveillance boats and the Portuguese Navy naval ships.

Two more Portuguese vessels arrived in June, were attacked by Chinese ships, but were able to fend off the Chinese attack.

Having failed to hire two Portuguese galleons to help him, he increased the size of his own fleet to 1700 vessels, assuming that he could overwhelm the Joseon navy with numerical superiority.

They encouraged Spanish merchant ships to take advantage of the political disruption and considered making direct attacks on Portuguese vessels returning from Guinea, with the objective of seizing the monopoly.

Just nine years later in 1497 on the orders of Manuel I of Portugal, four vessels under the command of navigator Vasco da Gama rounded the Cape of Good Hope, continuing to the eastern coast of Africa to Malindi to sail across the Indian Ocean to Calicut in south India-the capital of the local Zamorin rulers. The wealth of the Indies was now open for the Europeans to explore ; the Portuguese Empire was the earliest European seaborne empire to grow from the spice trade.

In 1505, the King of Portugal, Manuel I, sent his first viceroy, Dom Francisco de Almeida with twenty one vessels to strengthen the fledgling Portuguese empire in East Africa and India.

The homeport in Basra, which Murat Reis used while fighting the Portuguese forces in the Indian Ocean, consisted of 26 galleys and several smaller vessels.

Within fourteen years of da Gama's arrival, lateens were spotted by the Portuguese on local vessels.

The National Army headed then to the Bahia, where it attacked a convoy of Portuguese vessels consisting of more than seventy ships that went up to Maranhão.

Reference was made by João de Barros to a sea battle outside Jiddah, in 1517, between Portuguese and Ottoman vessels.

Because of its location, close to the limits established by the Tordesilhas Treaty, the Iguape region was the stage for constant disputes among Portuguese, Spanish, and French pirates who landed there in order to refill their vessels or to trade in their goods.

Captain Robert FitzRoy of suggested the practice had developed from earlier ceremonies in Spanish, Portuguese, and Italian vessels passing notable headlands.

John's ships were attacked by Portuguese vessels when he was trading in Flanders.

For his competency in that role, and other services to the Portuguese Crown, he was rewarded with the title moço fidalgo ( knight-gentleman ), and the high office of " Purveyor to the Armada of the Islands and the merchant vessels of the East India trade in all of the islands of the Azores " ( a hereditary title that followed successive members of the Canto family for three hundred years ).