Sanctioned LPG Tankers Zig-Zag in Gulf of Oman as U.S. Naval Campaign Reaches Kharg Island
Iran-linked gas carriers reversed course in the Arabian Sea after U.S. forces struck a tanker near Iran's main crude export terminal, extending the blockade's geographic reach.
Two U.S.-sanctioned tankers carrying Iranian liquefied petroleum gas were making U-turns and zig-zagging through the Gulf of Oman and Arabian Sea on Thursday (2026-07-17), unable to proceed as American naval forces tightened their cordon around Iran's energy export routes. Rigzone described the vessels as part of a flotilla of Iranian energy carriers facing what it called an aggressive U.S. blockade.6,7
The pressure had intensified the day before. U.S. Central Command announced on Thursday (2026-07-16) that it had struck and disabled an Iran-linked sanctioned oil tanker near Kharg Island — Iran's primary crude export terminal, situated deep inside the Persian Gulf. CENTCOM's willingness to operate that close to the terminal itself marked a significant extension of the campaign's geographic reach.3
The escalation traces to the week of 2026-07-13, when a fragile ceasefire between Washington and Tehran collapsed over shipping access. Iran declared the Strait of Hormuz shut on July 12 and subsequently targeted two Emirati tankers, the Mombasa and Al Bahiyah, as they transited the waterway. Energy Voice reported that the two sides had moved into direct military confrontation at sea.5
Tehran has attached a price to any resolution. An Iranian official said passage could be permitted — but only if Iran retained 20% of all cargo shipped through the strait as a matter of fairness. No commercial operator is known to have accepted that arrangement.5
The strait carries roughly 20% of global petroleum consumption and around one-third of the world's seaborne crude trade, according to Gulf News. A full, sustained closure at those volumes would be without recent precedent.4
Crude prices have not priced in a supply shock of that scale. ICE Brent crude front-month stood at $88.10 per barrel as of Saturday (2026-07-19), above the $84.69 recorded by Gulf News during Asian trading on Friday (2026-07-18). Abu Dhabi's Murban crude took a sharper hit in that session, falling $3.38, or 4.13%, to $78.55 — a divergence that reflects steeper pricing pressure on Gulf producers with closer physical exposure to the disruption zone.4
Analysts cited by Gulf News said traders appear to believe there has been no confirmed interruption to exports through the strait, and that the market is treating the confrontation as a manageable geopolitical risk rather than a full-scale supply crisis.4 That assessment rests on a distinction that remains under active pressure: the U.S. blockade has so far targeted sanctioned and Iran-linked tonnage rather than closing the waterway to all traffic. But the Kharg Island strike suggests the operational perimeter is narrowing toward Iran's core export infrastructure.
LPG adds a dimension that oil benchmarks do not fully capture. Cooking fuel supply across much of South and Southeast Asia depends on Persian Gulf LPG cargoes, and a sustained blockade of Iranian shipments would hit consumers with limited short-term alternatives.6
Historical comparisons offer limited comfort. When a prior Hormuz disruption appeared to ease and supertankers — each capable of carrying 2 million barrels — began transiting under an earlier fragile truce, ICE Brent crude front-month futures fell more than 10% to around $89 a barrel as traders priced in restored supply, according to The Economist.2,1 Prices have not moved that sharply in either direction since the current standoff began, which may reflect higher tolerance for ambiguity or diminished confidence that it resolves quickly.
Among the vessels waiting for clarity is Serifos, chartered by Thai state-owned PTT and identified by LSEG and Kpler data as one of seven tankers that sought Iranian clearance to transit the strait. Whether that diplomatic effort produces actual passage — and whether Iran's 20% cargo levy becomes the effective cost of access for any operator willing to pay it — is the clearest near-term test of how far the current disruption spreads beyond the sanctioned fleet.1