In 1554, off the coast of Albufeira, came eight oared vessels from Algiers, commanded by the corsair Xaramet Arraes[1], or Cazale[2], Captain-Major Dom Pedro da Cunha sailed in pursuit.

It lasted for over two hours before Dom Pedro's forces overcame the corsairs, killing forty and capturing the commander.

Meanwhile, his brother, Dom Vasco da Cunha, engaged another corsair ship, capturing it after an hour of fight.

It is also reported that they devastated the nearby island of Porto Santo in the Madeira archipelago, capturing 663 people and enslaving them.

[citation needed] The Nossa Senhora da Conceição was a Portuguese carrack that left Goa, India, in March 1621, heading for Lisbon with 600–800 people and 22 cannons.

[4] In 1671, Barbary corsairs captured a ship returning from Mazagan and attacked a small vessel (patacho) heading to India.

Additionally, the ship Madre de Deus engaged in combat with four corsair frigates near Vigo, managing to drive them away.

The ship Nossa Senhora Madre de Deus fought a three hour battle with a corsair frigate, eventually forcing it to flee.

After a combat, the Portuguese forces set one of the corsair ships on fire and captured another, rescuing a Spanish vessel in the process.

[8] In 1702, a report came of the capture of the patacho Nossa Senhora do Pópulo by corsairs from Algiers on its route between Lisbon and Mazagan, the crew was later rescued.

[16] In August 1754, three Portuguese caravelas traveling from Viana do Castelo to Lisbon were intercepted by five North African corsair ships.

In response, a warship was dispatched from Lisbon to patrol the Algarve coast, and the frigate São João Baptista was put on guard duty, remaining at sea until October.

[17] Because of the continuous activity of the North African corsairs, mainly against Spanish fleets, the kingdom was forced to carry out an attack on Algiers.

Portugal participated in the operation, bringing their ships Santo António, S. José and Nossa Senhora do Bom Sucesso, commanded by Bernardo Ramires Esquível [pt].

After a few hours of exchange of fire, the Portuguese were unable to capture the corsair due to shallow waters and the arrival of reinforcements from Algiers.

[24][25] After continued expenses and losses due to Algerian corsairs, Portugal negotiated a peace treaty in 1815 that included the release of Portuguese prisoners.

[26] In January 1818, the Esquadra do Estreito was formed, consisting of the frigates Pérola, Amazona, and Vénus, along with the xebec Bom Português.

[27] The Portuguese fleet, reinforced with smaller vessels, established a blockade of the Tunisian ships in Gibraltar, which lasted until April 12, 1819, when a new truce was signed between Portugal and Tunis.