 He engaged with the Knights in several occasions until August 1507, when he returned to Constantinople.In August 1507 he sailed to Alexandria with a cargo of 8,000 sets of oars and 50 cannons that were donated to the Mamluk sultan by Bayezid II for helping him in his fight against the Portuguese fleet which often ventured into the Red Sea and damaged Mameluke interests.Kemal Reis stayed in Egypt until February 1508, and was back in Constantinople in May 1508, where he personally coordinated the reparation and modification of his ships at the Imperial Naval Arsenal of the Golden Horn before setting sail once again towards the Aegean Sea for confronting the Venetians and the Knights of St. John.