The bottleneck includes 12 very large gas carriers and 50 very large crude carriers, with only six ships transiting the strait between Tuesday and Wednesday, far below the typical daily average of around 120 vessels in peacetime, data from maritime analytics firm Kpler showed.

Limited movement has been permitted through a tightly controlled corridor near Iran’s Larak Island, with access largely restricted to vessels linked to Iran or countries maintaining favorable relations with Tehran. Lloyd’s List estimates that at least 48 ships have passed through the route since last week under such arrangements.

Iran imposed the blockade following strikes by the United States and Israel on Feb. 28, effectively constraining a waterway that normally handles about one-fifth of global oil and gas shipments. Shipowners granted passage have reportedly faced fees of up to $2 million per transit, although Tehran has indicated that vessels from allied nations may be exempt.

Malaysian authorities said tankers operated by companies including Petronas, Sapura Energy and MISC were awaiting clearance, with Iran assuring Kuala Lumpur that fees would be waived due to bilateral ties. Officials cautioned that heavy congestion could delay passage regardless of exemptions.

China said at least three of its vessels had recently transited the strait following coordination with relevant parties. Ship-tracking data indicated that two container ships exited the Gulf on a subsequent attempt while sailing in close formation and at increased speed, in what analysts described as the first such movement by non-Iranian container vessels since the escalation began.

A small number of other ships have also managed to leave, including a Greek-operated tanker carrying Saudi crude to India and several Indian-flagged liquefied petroleum gas carriers transporting essential cargo.

Shipping sources said some crews have adopted risk mitigation measures such as nighttime navigation or disabling tracking systems to reduce exposure to threats including mines, missiles and drones.Despite limited transits, exports from major Gulf producers such as Saudi Arabia and Qatar remain largely suspended, with hundreds of vessels and an estimated 20,000 seafarers still awaiting clearance in and around the Gulf.

A Pakistani oil vessel reached Karachi after successfully transiting the strait, while another shipment arrived via an alternative route. Officials said further deliveries could follow in the coming weeks.The disruption has intensified diplomatic efforts to reopen the waterway.

Britain is preparing to host talks involving around 35 countries to address maritime security, while China and Pakistan have jointly called for a ceasefire and urged all sides to ensure safe passage for commercial shipping.U.S.

President Donald Trump reiterated on Wednesday that Iran must lift the blockade, warning of potential military action if it fails to comply.

The vessels, BW Tyr and BW Elm, are expected to arrive in Mumbai on March 31 and New Mangalore on April 1, respectively, according to a statement from the petroleum ministry.The transit comes as shipping through the strategic chokepoint has been severely curtailed by the conflict, with Iran allowing passage only to what it has described as “non-hostile vessels” that coordinate with its authorities.

The two tankers are among a small number of Indian-flagged vessels to successfully navigate the strait in recent days. Four LPG carriers have already completed the crossing, while three more remain in the western section of the waterway, according to ship tracking data.

A total of 18 Indian-flagged vessels with 485 Indian seafarers are still in the western Gulf region, the government said, underscoring continued exposure to maritime risks in the area.Energy dependence in focusIndia, the world’s second-largest importer of LPG, consumed 33.15 million tons of the fuel last year, with imports meeting roughly 60% of demand.

About 90% of these imports originate from the Middle East, making the Strait of Hormuz a critical artery for the country’s energy security.

Despite disruptions in maritime traffic, port operations across India remain normal with no congestion reported, the government added.