 The Greek admiral Andreas Miaoulis, himself a settler on Hydra, used Hydriot fire ships to inflict heavy losses on the Ottoman fleet.Eventually the fleet of Hydra - along with those of the other two naval islands of Psara and Spetses - were able to wrest control of the eastern Aegean Sea from the Ottoman Empire.With the end of the revolution and the creation of the Greek state, the island gradually lost its maritime position in the Eastern Mediterranean, igniting an economic crisis that led to a period of hardship and unemployment.