
Three Iranian supertankers carrying 4.8M barrels exit the U.S. blockade ahead of Friday's Geneva deal. Shipowners are split between first-mover bets and insurer caution. Friday's signing decides which side is right.
Three Iranian supertankers carrying nearly 5 million barrels of crude slipped past the U.S. Navy blockade in the Strait of Hormuz this week, the first outbound shipments in two months. The Diona and Hero 2, owned by the National Iranian Tanker Company and under U.S. sanctions, together carried 3.8 million barrels, shipping data from Kpler shows. A third tanker hauled another 1 million barrels out on Wednesday.
The departures come ahead of a U.S.-Iran deal signing scheduled for Friday in Geneva. The two sides signed a Memorandum of Understanding on Monday. Washington will allow Tehran to resume oil sales immediately after the signing, the Wall Street Journal reported Tuesday, in exchange for a commitment to curb Iran's nuclear program. The formal accord is expected to reopen the strait and waive sanctions on Iranian crude exports.
Shipowners are reading the same headlines and drawing different conclusions. Some VLCC owners are racing tankers toward the Middle East Gulf, hoping to be first into port when the backlog clears. Dozens of very large crude carriers sailed from the South China Sea and across the Indian Ocean toward UAE ports over the past week, according to maritime intelligence firm Windward. At least 30 ships were already anchored there.
Others are holding position. The maritime sector is "treating the news with something closer to wary disbelief than celebration," Lloyd's List Intelligence said. Insurers are refusing to lower war-risk premiums until they see "solid evidence" the waterway will stay safe, Lloyd's analysts wrote in a client note Tuesday. They called the outlook "a fragile reprieve rather than a return to normality."
The U.S. Navy has told the industry that "nothing has changed and will not until the agreement is signed," said Tim Wilkins, managing director of Intertanko, an association of independent tankers. Traffic through the strait will remain minimal until Friday.
Kpler estimates 118 laden tankers could exit the region within 15 days after the deal is signed. That surge would be a one-time event, not a durable recovery of traffic. "Most shipowners appear to be cautiously awaiting more details before planning new transits," said Niels Rasmussen, chief shipping analyst at BIMCO. "They will seek reassurance that transits are not only permitted but also safe."
For crude oil markets, the gap between the two camps -- the first-mover optimists and the insurer-led skeptics -- creates a trading problem. If Friday's signing holds and the strait reopens, the immediate effect is a flood of Iranian crude onto a market that has been paying a war-risk premium for months. Brent would likely test lower. If the deal fractures or enforcement unravels, the tanker breakout becomes a one-off and the blockade stays. The first scenario is what the repositioning tankers are betting on. The second is what insurers are pricing.
The three tankers that left this week are a signal. The question is whether Friday's signing turns that signal into a convoy or leaves it as an anomaly.
For context on how a reopened Hormuz shifts oil flows, see the crude oil profile. For the broader inventory and demand backdrop, see the commodities analysis page.
Prepared with AlphaScala research tooling and grounded in primary market data: live prices, fundamentals, SEC filings, hedge-fund holdings, and insider activity. Each story is checked against AlphaScala publishing rules before release. Educational coverage, not personalized advice.