Thiolu In 1877, the naval ships of the Ottoman Navy were disposed as follows:[1] Mediterranean Fleet Bosporus Fleet Constantinople Guard vessels Under repair at Tersâne-i Âmire In March 1877, the Ottoman Navy was structured as follows:[1] Black Sea Fleet (Ferik Bozcaadalı Hasan Hüsnü Pasha) Mediterranean Fleet (Ferik Giritli Hüseyin Pasha) Bosporus Squadron Danube Squadron (Ferik Mehmet Arif Pasha) Ottoman Danube Steamship Company (İdare-i Nehriye) In 1877, Danube Squadron of the Ottoman Navy was disposed as follows:[1] April 27, 1877 July 10, 1877