Drone attacks were reported on three tankers in the Black Sea on Thursday near Turkey's northern coast, shipping agency Tribeca said.
The tanker James II, sailing under the Palau flag and in ballast, was some 50 miles (80 km) north of the Turkeli Area in the Black Sea when the incident occurred, the agency said.
The tankers Altura and Velora, sailing under the Sierra Leone flag and in ballast, were reportedly attacked in a nearby area while doing a ship-to-ship operation, the agency also said.
Coastal safety boats were sent to the scene for assistance, and all crew members in the tankers were reported in good condition, the agency said.
Moscow and Kyiv have frequently attacked one another's ports and tankers since Russia launched its full-scale invasion of Ukraine more than four years ago.
All crew members on the tankers were reported in good condition
Neither country immediately claimed responsibility for the newly reported attack.