Rigs B-312 and B-319, which previously were based in the Odessa gas field, had to return to the waters of the Russia-controlled Crimea.

Due to a current conflict with Turkey and the war with Ukraine, Russia is caught in the Black Sea and can now safely navigate in the sea waters sweeping three states. Due to the risk of losing vital assets - two modern drilling rigs B-312 and B-319 worth more than RUB 25 billion, Chernomorneftegaz oil and gas firm carried them from the Odessa gas field (located on the northwest shelf of the Black Sea, 150 km from the Crimean coast) to the territorial waters of the peninsula.

FSB border guard patrol boats and missile boat of the Black Sea Fleet forced the Turkish merchant ship to change course as the Russian convoy was crossing the way of a Turkish ship, according to the company's website.

Sunday, Dec 13 the Russian destroyer" Smetlivy" fired warning shots at a Turkish fishing ship as the latter did not connect with the convoy vessels.