To make up for this loss, the Portuguese captured and commandeered five ships from Gujarat that were sailing between Malacca and Sumatra. The small fleet of Albuquerque engaged an enemy "junk" ship of the Malaccan "Moors" near an island between Lumut and Belawan. According to Barros, they fought against this ship for two days. The enemy crew employed tactics of setting inflammable, oleaginous matter on fire as a means of burning Albuquerque's ships and repelling boarding action, as they employed ramming techniques and close-range volleys of artillery. Although the ship surrendered, the Portuguese gained such an admiration for the junk and its crew that they nicknamed it "O Bravo" (The Brave Junk). The Portuguese crew pleaded with Fernão Pires to convince Albuquerque that the crew should be spared and viewed vassals of Portugal who were simply unaware of who they were actually fighting. Albuquerque eventually agreed to this. Passing by Pacem (Samudera Pasai) the Portuguese came across a "Djong"—a junk larger and faster than their flagship, the Flor do Mar. At the time, the Portuguese currently had one squadron of 40-43 vessels. The Portuguese ordered it to halt but it promptly opened fire on the fleet, after which the Portuguese quickly followed suit. Reported by Gaspar Correia: Once aboard, the Portuguese found a member of the royal family of Pacem, whom Albuquerque hoped he could exchange for the Portuguese prisoners. In January 1513 Paty Onuz (also known as Fatih Yunus or Pati Unus) tried to surprise Malacca with 100 vessels with 5,000 Javanese from Jepara and Palembang. About 30 of those were junks weighing about 350-600 tons (except for Pati Unus' flagship), the rest being smaller boats of pangajava, lancaran, and kelulus types. The junks themselves carried 12,000 men. These vessels carried much Javanese artillery. Although defeated, Pati Unus sailed home and beached his warship as a monument of a fight against men he called the bravest in the world, his exploit winning him a few years later the throne of Demak. In a letter to Afonso de Albuquerque, from Cannanore, 22 Feb. 1513, Fernão Pires de Andrade, the Captain of the fleet that routed Pate Unus, says:  Castanheda noted that Pati Unus' junk is built with 7 layers of planking, called "lapis" in Malay, between each layer was put a coating consisting a mixture of bitumen, lime, and oil.