The blockade of Southern Naval Base lasted from 3 March to 27 March, 2014. It began with the blocking of the exit from Donuzlav by the Russian missile cruiser Moskva, Russian Navy later flooded the Russian anti-submarine ship Ochakov to prevent Ukrainian ships from leaving and reaching the Ukrainian fleet in Odessa. As a result of the blockade, 13 Ukrainian ships were blocked in Donuzlav. The blockade ended with the establishment of Russian control over the last ship under the Ukrainian flag in Crimea, "Cherkasy".