[1/6] Commercial vessels, including oil tankers, wait at an anchorage in the Black Sea off Kilyos near Istanbul, Turkey, December 9, 2022.
A total of 28 oil tankers are in a queue seeking to leave the Bosporus and Dardanelles straits, the Tribeca shipping agency said on Friday.
Turkey's maritime authority said it would continue to keep out of its waters oil tankers that lacked appropriate insurance letters.
A shipping source said four of the tankers waiting to cross the Dardanelles were scheduled to go on Saturday with tug escorts.
Millions of barrels of oil per day move south from Russian ports through Turkey's Bosphorus and Dardanelles straits into the Mediterranean.