text: In early March 2014, during the Russian military intervention in Ukraine, Russian sailors scuttled several naval vessels to act as blockships at the entrance to Donuzlav Bay and the port of Sevastapol, in an attempt to prevent [[Ukrainian navy ships berthed in the port from gaining access to the Black Sea. Ships sunk included the hull of the naval cruiser Ochakov and a diving support vessel of BM-416-class (approximately 35 tonnes (39 tons)).