Dozens of tankers remain stuck doing nothing months after being sanctioned by the Treasury Department ¡ª a signal of Washington¡¯s scope to disrupt Moscow¡¯s petroleum supply chain if it chooses to.

Since October, 40 ships involved in Russia¡¯s oil trade have been added to the Treasury¡¯s list of designated entities, mostly for breaching a price cap that¡¯s meant to restrict the Kremlin¡¯s access to petrodollars.

Only one of them, the SCF Primorye, collected a cargo since being designated. It is heading to Asia, and if it¡¯s able to offload the barrels it¡¯s carrying without any problems, it might encourage Russia to use more of the ships again.