context: After the capture of Ukrainian ships, Alexander Turchinov instructed the new Minister of Defense of Ukraine Mykhailo Koval to say that “no warship should remain captive” [86]. On April 19, 2014 the ships Kirovograd, Vinnitsa, Kherson, Kovel, Horlivka and Novoozernoye were returned to Ukraine and relocated to Odessa [87] [88]. The transfer took place in neutral waters, where the ships were towed by the Russian side, after which the Ukrainian flags were again raised on the ships [89]. In May, the minesweeper Genichesk [90] and the passenger boat Dobropolye [8] were handed over to Ukraine.
question: How many ships were returned to Ukraine after the blockade of the Ukrainian fleet in Donuzlav?
answers.text: Kirovograd, Vinnitsa, Kherson, Kovel, Horlivka and Novoozernoye