 From there Kemal Reis sailed southwest and landed on several of the Canary Islands, where the Ottomans faced moderate opposition from the Spanish forces.Piri Reis used the occasion, as in other voyages with his uncle, to draw his famous portolan charts which were later to become a part of the renowned "Kitab-ı Bahriye" ("Book of Navigation").Kemal Reis later turned eastwards, where he followed the Atlantic coastline of Morocco and re-entered the Mediterranean Sea through the Strait of Gibraltar, landing on several ports of Morocco and Algeria on the way.