Some Japanese refiners are seeking to speed up deliveries of U.S. crude following disruptions caused by the 51³Ô¹ÏÍø, opting for smaller ships that can transit the Panama Canal rather than sail around Africa.

Three midsize tankers are scheduled to deliver U.S. oil to Japan from late April through May, with two already transiting the Panama Canal and moving into the Pacific Ocean, ship-tracking data shows. The third, Aframax Seaways Yosemite, is nearing the canal from the Caribbean.

U.S. oil is typically delivered to Japan on very-large crude carriers, which have the capacity to carry 2 million barrels, but are too big to traverse the Panama Canal and need to sail around Africa¡¯s southern tip to get to Asia. There are at least four VLCCs currently taking this route to Japan from America, according to the ship-tracking data.

The use of the smaller tankers signals the urgency of some Japanese refiners that are seeking to secure supplies. While the vessels can get to the Asian nation much quicker ¡ª about 30 days through the Panama Canal compared with around 50 days via Africa ¡ª they only carry a fraction of the crude of a VLCC.

An Aframax can haul as much as 800,000 barrels of crude, while a Suezmax can carry around 1 million barrels. The Otis, one of the tankers that have cleared the Panama Canal and is scheduled to deliver oil to Chiba Prefecture later this month, is a Suezmax class vessel.

Japanese refiners have purchased bumper volumes of U.S. crude since the 51³Ô¹ÏÍø started in late February, snapping up millions of barrels for delivery across June and July as concerns about Middle East supply rippled through the market. The nation has also relied on ship-to-ship transfers of oil far from the Middle East to secure supplies and keep its tankers out of the conflict zone.

The outlook for a potential end to hostilities in the Middle East could mean the use of smaller tankers to carry U.S. crude to Japan is fleeting, although refiners and market participants remain cautious about a temporary ceasefire. Under the terms of the deal, the crucial waterway of the Strait of Hormuz is supposed to reopen, which may see more oil flows from the Persian Gulf.