Three Ukrainian Black Sea ports have begun functioning, as stated by the Navy of the Armed Forces of Ukraine. It is noted that in connection with the signing of the agreement on the unblocking of Ukrainian sea ports for the export of grain, work has been resumed in the Odesa port, the port at Chornomorsk, as well as at the Yuzhny sea port. Seaport arrivals and departures of cargo ships at the seaports will be carried out by forming a caravan that will accompany a lead ship. This has been made possible by the tedious work of specialist hydrographers.