	The Ukrainian fleet was largely surrounded by the Russian fleet and thus inoperable by the Ukrainian command. On the Donuzlav Lake since the night between 5 and 6 March, seven Ukrainian vessels were blocked by sunken Russian vessels. Lutsk (U205), Vinnytsia (U206), Chernihiv (U310), Cherkasy (U311), Henichesk (U360), Kirovohrad (U401) and Konstyantin Olschansky (U402)