Sinokor Moved 105.6 Million Barrels Through Hormuz in September

Sinokor Group carried 105.6 million barrels of crude through the Strait of Hormuz in September — almost 40% of all oil transiting the waterway that month, according to an analysis of ship-tracking and ownership data from Vortexa, Equasis and Signal Group.

That single number puts the little-known South Korean shipowner ahead of the next three players combined. Bahri (the National Shipping Co. of Saudi Arabia), Kuwait Oil Tanker Company and Adnoc's shipping unit together moved 97.3 million barrels over the same period, Bloomberg calculations based on the same data show. The analysis counted ownership, not commercial operators. None of the four companies responded to requests for comment. Lloyd's List first reported Sinokor's dominance of September transits.

How did an obscure Korean owner get here?

The mechanism is straightforward. Sinokor, owned by tycoon Ga-Hyun Chung, spent the run-up to the Iran war amassing a large tanker fleet through outright purchases and time charters. When Hormuz was all but closed off, producers needed tonnage urgently — load oil or risk filling storage and being forced into costly shutdowns. Sinokor's ships were snapped up at exorbitant rates.

The bet paid off twice. First, during the closure itself, when any available tanker commanded a premium. And now, during the recovery, because Sinokor stayed in the so-called shuttling trade even as panic demand faded.

That trade has a specific shape. Vessels make short trips into the Persian Gulf, load, sail through Hormuz, and discharge at ship-to-ship transfer points in the Gulf of Oman. Gulf crude exports have now recovered to close to pre-war levels, and Sinokor remains among the most active owners running these rotations.

What does this change for shippers and carriers?

For Gulf producers, Sinokor has become the workhorse of their export recovery. Its tankers have moved crude from Saudi Arabia and the UAE since the early weeks of the war, and more recently added Iraq and Qatar shipments, ship-tracking data show. That breadth matters: an owner active across four national export streams captures volume even as individual producers' flows fluctuate.

For rival owners — Bahri, KOTC, Adnoc's unit — the September numbers show how much share a privately built fleet can take from state-linked carriers in a disrupted market. The war created a window; Sinokor's pre-positioned tonnage walked through it.

For charterers and forwarders watching freight economics, the lesson is about fleet timing. Owners who held capacity before the closure, rather than scrambling after it, captured the exorbitant rates. Those who didn't are now watching a Korean upstart move more barrels than three state shipping companies combined.

The open question is durability. Shuttl­ing volumes track the gap between pre-war export levels and current flows. As Gulf exports sit close to pre-war levels, the transfer-point trade should thin — unless renewed disruption pushes Hormuz risk back up and exorbitant rates return.