Barbary pirates ranged across the Mediterranean waters, raiding ships, coasts and islands, taking booty and slaves for the Barbary slave trade. Kythira was at the mercy of Barbary pirates due to its strategic location in the Mediterrean. In order to intercept merchant vessels, islands along the trade routes were of course more interesting for pirates. In the 17th century the small islands like Sapientza (Kalamatas) south of Messinia (district in south-western part of the Peloponnese), Cerigo (Kythira) south of the south-eastern tip of the Peloponnese, and along the coast of Asia minor, the then deserted islands of Fourni southwest of Samos, and the island of Psara, west of Chios, were all pirate bases.