This was stated by the Ministry of Foreign Affairs, according to the "Ukrainian military portal".

The Ministry of Foreign Affairs of Ukraine regularly receives information on the monitoring of navigation in the waters adjacent to the coast of the occupied Crimea.

It is also reported that from September 2020 to January 2021, the Ukrainian Navy recorded 117 cases of violations of merchant vessels in the occupied territories of Crimea. Of these, 6 merchant vessels violating the legal regime of the temporarily occupied territories of the Autonomous Republic of Crimea, moving from and to the ports of the Republic of Turkey.

The Ministry of Foreign Affairs of Ukraine claims that some vessels continue to circumvent the bans by providing false information about the route of ships and ports of destination, as well as interference in the operation of ship's automatic systems (AIS).

"The issue of illegal communication with the temporarily occupied Crimea is the subject of discussion during all contacts with the Turkish side, including at the level of the leadership of the two countries", - the Ukrainian Foreign Ministry was announced.

What is known

• Since July 2014, Ukraine has officially shut down all ports in the occupied Crimea and Sevastopol, and the peninsula's harbors are closed to international shipping.
• On February 19, 2018, Ukraine submitted to the UN International Tribunal a memorandum on Russia's violation of the provisions of the UN Convention on the Law of the Sea.
• Ukraine has imposed sanctions against Russian airlines for flights to the Crimea.