This guy. He seems to have gotten into a feud with a Portuguese commander named Francisco de Almeida. The wiki page of the Battle of Diu states that de Almeida sought to avenge the death of his son at the hands of Mirocem. The Portuguese won the battle, but nothing is said of Mirocem's fate.
Any other information on Mirocem is welcome too. Kurds generally aren't a seafaring people, so it was quite a surprise to see one as admiral of the Mamluks.
While it is true that the Kurds are not a seafaring people by tradition, Mirocem (the transliteration of Amir Hussain into Portuguese) hailed not from Kurdistan, but from the Sultanate of Gujarat in northwestern India which the Portuguese referred to as Cambaia or Cambay, where the Battle of Diu took place.
That being said, neither were the Mamluks, despite their ample interests between the producers of spices in India, the muslim merchants who shipped them to Egypt through the Red Sea and the Venetian buyers in the Mediterranean. The country was de-facto ruled not by the Sultan but by the Mamluks themselves, a military caste of horse-riding slave bowmen primarily.
With that, the Mamluk expedition to India, although financed by the Mamluks was composed in it's greater part by Arabian, Abyssinian and Turkish mercenaries, Italian technicians and led by a Kurd with considerable naval experience and knowledge abroad.
Hussain survived the battle and escaped Diu along with 22 other Mamluks on horseback. He managed to return to Egypt where in 1515 he was again put in charge of a new expedition that was meant to return to India with 3,000 men, and 20 galleys commanded by the Turk Suleiman Reis, which he considered scarce to oppose the Portuguese. The expedition set sail but it dissolved in campaigns in the Red Sea, during which Suleiman had Hussain murdered due to their rivalry.
Sources are Portuguese Sea Battles - Volume I - The First World Sea Power 1139-1521, by Saturnino Monteiro and a Portuguese book detailing the battle of Diu, Chaul e Diu - 1508 e 1509 - O domínio do Índico by José Virgílio Amaro Pissarra, which are in turn based on contemporary Portuguese chronicles like História do Descobrimento e Conquista da Índia pelos Portugueses by Fernão Lopes de Castanheda, Ásia by João de Barros, Lendas da Índia by Gaspar Correia and Crónica Anónima. On the Egyptian side the author refers to a contemporary narrative by a man called Ibn Ayas, translated into french under the name Journal d'un bourgeois du Cairo, detailing the final years of the Mamluk Sultanate.