Record Tanker Rates Threaten to Push U.S. Oil Exports to Asia to Seven-Year Low

Record tanker rates raise the delivered price of US crude for Asian refineries. When transport costs surge, buyers can no longer profitably source oil from the US Gulf Coast, especially over the long Pacific route. That reduces orders and exports.

The Gulf Coast-to-China tanker rate reached $79.6 million earlier in the month, compared with an average below $8 million before the conflict. Valero estimates freight alone now costs Asian refiners $30 to $35 per barrel, up to seven times last year’s level. Oil itself is trading around $100 a barrel.

November orders have dropped roughly 50%, to 24 million to 26 million barrels so far. If that pace continues, shipments would reach a seven-year low. Some traders expect post-cycle orders to lift volumes toward 40 million barrels, but Vortexa sees no evidence of a near-term surge.

The cost of hiring a tanker from the US Gulf Coast to China has exploded. It more than tripled after the US-Iran conflict began in late February, reaching almost $60 million by Thursday. Earlier in the month, it hit $79.6 million.

That peak was unprecedented in the market. During the five years before the conflict, rates averaged less than $8 million. The comparison shows how sharply the disruption changed the economics of moving crude across the Pacific. The rate covers the vessel’s voyage, not the oil in its tanks.

For a 30-day voyage on the largest crude carriers, the leasing cost now equals about half the price of building a new vessel. Freight costs of this size are discouraging Asian refiners from buying US crude and are pushing US export grades closer to benchmark prices.

A crude oil tanker is a ship designed to carry large quantities of unrefined petroleum. Asian refineries rely on such vessels to bring crude from distant suppliers, including the US Gulf Coast. The tanker’s charge becomes part of the delivered cost paid by the refinery.

The Pacific journey illustrates the scale. Hiring one of the largest crude carriers for the roughly 30-day trip recently cost as much as $79.6 million. That fee excludes the oil, which was trading around $100 a barrel. Valero said freight alone can add $30 to $35 to every barrel delivered to Asia.

This makes shipping a major part of the purchase decision. Before the conflict, the Gulf Coast-to-China route averaged less than $8 million in tanker costs. With rates now several times higher, US crude loses its price advantage, and Asian buyers have less reason to order it.

When freight accounts for $30 to $35 of each transported barrel, the US-to-Asia trade becomes much more expensive before refining begins. Asian buyers must compare that delivered cost with crude available from other regions. If the US option no longer offers enough savings, they cut orders.

Valero’s Randy Hawkins said the charge is as much as seven times what refiners paid last year. The oil itself was trading around $100 a barrel, so shipping represents a substantial additional expense. The route’s tanker cost briefly reached $79.6 million for a 30-day voyage.

The immediate effect is weaker demand for US grades. November Asian orders fell to 24 million to 26 million barrels so far, about half the previous month’s level. US export premiums also weakened, including Permian crude and Mars, as lower Asian demand rippled into US pricing.

The conflict disrupted shipping around the Persian Gulf and Strait of Hormuz, a major route for Middle Eastern oil. Tanker operators responded by changing how they moved cargoes. That reduced the effective availability of large ships worldwide, even when oil still needed to be delivered.

Valero said smaller vessels were increasingly used to collect crude in the Persian Gulf because they were less likely to be hit by Iranian fire in the strait. After passing through, those vessels transferred their cargoes to larger ships waiting in the Gulf of Oman. The extra steps consumed more vessels and time.

Insurance costs and fuel prices also rose, adding to freight rates. The result was a global tanker squeeze. Larger ships became exceptionally expensive to hire, weakening the economics of long-haul US exports and pushing Asian buyers toward other sources.

The ship-to-ship system is a safety response to the conflict. Smaller tankers collect crude in the Persian Gulf and cross the Strait of Hormuz because they are considered less likely to be hit by Iranian fire. Larger tankers then receive the cargo outside the strait, in the Gulf of Oman.

This arrangement creates an inefficient chain. Oil that could move directly on one large vessel instead requires smaller ships, waiting large ships, and a transfer operation. Valero’s Randy Hawkins said the process requires more tankers to move the same quantity of crude. It therefore absorbs capacity without increasing the amount of oil transported.

The impact spreads beyond the Gulf. Ships are occupied for longer and become unavailable for other routes, including the US Gulf Coast-to-Asia trade. Insurance and fuel costs add further pressure. The resulting shortage helped push tanker rates to unprecedented levels.

In oil trading, arbitrage is the opportunity to profit from a price difference between markets. A buyer may source US crude for Asia when the savings over other supplies exceed transport, insurance, fuel, and related costs. The remaining difference is the trade’s incentive.

High freight rates shrink or erase that difference. Vortexa said freight costs were squeezing arbitrage economics on long-haul routes. Valero estimated that hauling each barrel from the Gulf Coast to Asia now costs $30 to $35, compared with much less before the conflict. The oil price itself is separate from that charge.

Asian buyers therefore have less reason to order US crude. November orders dropped roughly 50% to 24 million to 26 million barrels so far. That weaker demand reduced premiums for export-bound Permian crude and Mars. Vortexa did not see evidence of an imminent rebound.