Gulf Oil Producers Gain Control of 230-Tanker Fleet Defying Iran
Gulf oil producers have gained control of a fleet of nearly 230 tankers that have defied Iran to ship oil through the Strait of Hormuz and keep the chokepoint open to global trade. The giant fleet is owned, managed, chartered or controlled by Gulf national oil companies or their trading and shipping arms and is designed to cut reliance on chartering tankers on the spot market.
The “Arab Dark Fleet” is the biggest shift in how Gulf national oil companies run their freight, logistics, and supply chains since the Tanker War of the 1980s. Despite very high freight rates, fewer shipowners will send tankers to load at oil terminals in Iraq, Saudi Arabia, Kuwait, Bahrain, Oman or the UAE. The result is a new fleet, solely deployed by Gulf states and dedicated to keeping their oil flowing.
Dark VLCC Shuttles Carry Oil to Ship-to-Ship Hubs Off the UAE and Oman
The fleet almost exclusively sails dark in the Middle East Gulf, with AIS switched off for legitimate safety and security reasons. Tankers load dark, and then transit the Strait of Hormuz via Oman’s southern corridor with U.S. military support. Many have not signaled their AIS position in weeks.
The majority of the fleet is very large crude carriers. This is the predominant class used to run shuttle trips from oil terminals west of Hormuz to ship-to-ship transfer hubs off the UAE and Oman. Ships sail with AIS switched off, often at night with oil, then transferred to other tankers for onward shipment to global markets.
National Carriers and Global Traders Swell the Fleet
The fleet includes tankers already owned by national shipping companies. These are supplemented by newly purchased tankers, chartered-in tonnage and spot charters, many of them from private Greek shipowners. Global traders are also shuttling oil that has been loaded at West-of-Hormuz terminals and then sold at a premium from ship-to-ship hubs or shipped directly to buyers. Their ships are included in the dark fleet tally.
A South Korean shipowner is the fleet’s largest operator, followed by three Gulf national shipping companies. The most important addition to the Arab Dark Fleet is a South Korean shipowner, half-owned by a large container line. The South Korean shipowner began buying and chartering VLCCs in December 2025 and has built a fleet of more than 100 ships, about 70% of which now work in the Arab Dark Fleet.
Crude Exports Surge as Gulf Producers Take Control
Crude exports (minus Iran) loaded West of Hormuz are running at about 11 million bpd in October, up from 1.56 million bpd in May, according to Vortexa data. Some 15% of the fleet has changed registered ownership in the past three months, according to Windward data.
The Arab Dark Fleet’s growth is a direct result of Gulf producers’ efforts to secure their oil supply chain and reduce reliance on chartering tankers on the spot market. The shift marks a significant change in how Gulf national oil companies run their freight, logistics, and supply chains since the Tanker War of the 1980s.
The Arab Dark Fleet’s largest operator is a South Korean shipowner, followed by three Gulf national shipping companies.
Original Article: The Arab Dark Fleet Keeping Hormuz Oil Flowing — Windward