Some 16 vessels had violated a ban on entering the ports in Crimea annexed by Russia, which were closed by Ukraine, in the period from September 1 through September 30, the Ministry for Temporary Occupied Territories and Internally Displaced Persons of Ukraine has said.

The press service of the ministry reported on its Facebook page on Tuesday that some 15 ships were under the flag of the Russian Federation and one under the flag of the Republic of Togo.

"In general, these vessels carried out 47 calls at the ports of Feodosia, Sevastopol and Kerch," the ministry said.

In addition, 13 ships under the flag of the Russian Federation were registered in the harbors of the seaports of Sevastopol, Feodosia, and Kerch, including 10 under the flag of the Russian Federation and one each under the flags of Turkey, Moldova and Panama.

Seaports located in Crimea – Yevpatoria, Kerch, Sevastopol, Feodosia and Yalta – are closed under resolution of the Cabinet of Minister of Ukraine No. 578-r dated April 30, 2014. The ministry said that the entry of vessels under foreign flags into closed seaports and terminals located in Crimea and Sevastopol is considered a violation of international law.