Reuters reported Wednesday that the Chinese-owned tanker failed to hold its Gulf exit and headed back toward the chokepoint after Tuesday’s passage. The move came after the U.S. military said no vessel had broken through the blockade in its first 24 hours.
Before that turnback, shipping data reviewed by Reuters showed Rich Starry had been among at least eight ships that crossed the waterway on Tuesday. The tanker was carrying about 250,000 barrels of methanol loaded at Hamriyah in the United Arab Emirates, showing how fast commercial calculations are changing even for cargoes loaded outside Iran.
What the Strait of Hormuz blockade covers
U.S. Central Command said the blockade began April 13 at 10 a.m. ET and applies to vessels entering or leaving Iranian ports and coastal areas along the Gulf and Gulf of Oman. CENTCOM also said it would not block neutral passage through the Strait of Hormuz to or from non-Iranian destinations.
That carveout still leaves a wide enforcement zone. A note to seafarers seen by Reuters said unauthorized vessels entering or leaving the blockaded area could face interception, diversion or capture, even as neutral transit remained formally exempt.
The first-day signal was not only legal but operational. Reuters reported Tuesday that more than 10,000 U.S. personnel, more than a dozen warships and dozens of aircraft were enforcing the order, while six merchant ships complied with directions to return to an Iranian port on the Gulf of Oman.
Why the Strait of Hormuz blockade matters
That is a modest number in raw terms, but it came in a corridor that usually carries about one-fifth of the world’s oil and gas supplies. Traffic is still only a fraction of the 130-plus daily crossings seen before the war began on Feb. 28, which means hesitation is now shaping the market almost as much as direct interdiction.
For energy traders, the Rich Starry episode matters because ship movements may now be judged not only by where a cargo was loaded, but also by sanctions exposure, prior port calls and how aggressively navies interpret a vessel’s profile in or near the strait.
Strait of Hormuz blockade follows years of shadow-fleet pressure
The standoff also fits a longer regional pattern. In a January 2025 Reuters special report on Iran’s shadow fleet, the news agency documented how sanctioned oil moved through renamed ships, forged paperwork, ship-to-ship transfers and spoofed tracking signals, keeping enforcement and insurance risk elevated across the Gulf.
The shipping industry also has fresh memory of direct seizures in the same waters. In April 2024, Iran seized the MSC Aries in the Strait of Hormuz, a reminder that commercial vessels in the corridor can quickly become leverage in a broader military confrontation.
Earlier Tuesday crossings show the strait is not fully closed. But Rich Starry’s turnback shows the new blockade is already changing routing decisions in real time — and narrowing the space between sanctions enforcement, military signaling and commercial risk.
