April 26, 2026: Iran War Maritime Intelligence Daily

At a Glance

• Hormuz transit rebounds to 19 crossings, all with AIS active and no dark transits.
• U.S. intercepts sanctioned LPG SEVAN in the Arabian Sea, extending enforcement beyond the Gulf.
• Kharg Island shows active loading alongside a growing queue of at least 8 VLCCs.
• Gulf vessel presence rises to 892, signaling a broader recovery in activity.
• Dark activity increases to 123 events despite improved AIS compliance during transit.
• Vessel behavior reflects controlled reopening under continued enforcement and sanctions pressure.

Operational Overview 

Maritime activity across the Strait of Hormuz and adjacent corridors is showing early signs of recovery, but under sustained enforcement pressure and continued sanctions-driven disruption.

Transit volumes rebounded on April 25 following several days of suppressed movement, with all crossings conducted under full AIS visibility. At the same time, U.S. enforcement activity expanded beyond the Gulf, highlighted by the interception of a sanctioned LPG tanker in the Arabian Sea.

Iranian export infrastructure continues to operate under strain. Kharg Island shows active loading alongside a growing anchorage queue, indicating throughput pressure rather than a full recovery in export flow.

Across the system, vessel behavior reflects a controlled reopening environment, where movement is resuming, but under active monitoring, enforcement risk, and persistent sanctions pressure.

U.S. Enforcement Expands Beyond the Gulf

On April 25, U.S. naval forces intercepted the sanctioned LPG tanker LPG SEVAN (IMO 9177806) in the central Arabian Sea, marking a clear extension of enforcement activity beyond the Strait of Hormuz.

The vessel is a Panama-flagged LPG tanker assessed as part of the Iranian dark fleet and was designated under OFAC sanctions on April 24, one day prior to the interception. It was listed among 19 shadow fleet vessels involved in transporting Iranian energy products, including propane and butane.

U.S. Treasury reporting indicates that LPG SEVAN previously transported approximately 750,000 barrels of Iranian LPG cargo to Bangladesh between August and November 2025, establishing a pattern of sanctions-evasion activity.

At the time of interception, the vessel was carrying approximately 200.6 thousand barrels of LPG+/olefins. While declaring Dubai as its destination, its operational routing indicated a trajectory toward Jaigarh, India, consistent with prior Iranian export patterns.

AIS and maneuvering data show that the vessel was proceeding eastbound across the Arabian Sea before executing a tight 180-degree turn at approximately 11:08 UTC on April 25, around 200 nautical miles south of Pakistan. The vessel reduced speed during the maneuver and then resumed westbound movement.

The nature and timing of this course reversal are consistent with a compelled maneuver following interception by U.S. naval assets, reportedly involving a helicopter deployed from USS Pinckney.

This event demonstrates active enforcement not only at chokepoints but across broader transit corridors, reinforcing that sanctioned vessels remain exposed well beyond the Gulf.

Kharg Island Loading Continues as Queue Builds 

Kharg Island continues to function as Iran’s primary crude export hub, though under visible operational pressure.

Windward Multi-Source Intelligence analysis of SAR imagery from April 26, 02:37 UTC, identified two tankers actively loading at the terminal, one VLCC and one Suezmax-class vessel, located at the eastern and western berths. Combined loading capacity is estimated at approximately 3 million barrels.

At the same time, at least eight additional VLCCs were observed anchored south and east of Kharg, forming a substantial waiting queue.

This buildup indicates elevated pressure on export throughput, with vessels accumulating at anchorage while awaiting loading slots.

The combination of active loading and a growing queue suggests that export activity is continuing, but constrained by operational pacing, infrastructure limits, or external enforcement dynamics.

Transit Activity Rebounds Under Full Visibility

Transit activity rebounded sharply following the late-April slowdown.

On April 25, a total of 19 vessels crossed the Strait of Hormuz, including five inbound and fourteen outbound transits. All crossings were conducted with AIS active, marking a complete absence of dark transits.

Inbound traffic consisted entirely of cargo vessels, including one Tanzania-flagged vessel, one Iran-flagged vessel, and three vessels flagged to India, all routing via the Northern Corridor.

Outbound traffic included three tankers flagged to Madagascar, the Caribbean Netherlands, and Panama; two bulk carriers flagged to Barbados and Iran; and nine cargo vessels flagged to Gambia, India, Somalia, two to Iran, and four to Comoros.

This represents a clear increase in outbound movement, led by a mix of high-risk tankers and bulk carriers alongside moderate-risk cargo traffic.

Gulf Activity Rebuilds

Total vessel presence across the Gulf increased to 892 vessels, a rise of 126 compared to the previous day, reflecting a broader recovery in maritime activity.

Panama remained the dominant flag state with 140 vessels, followed by Iran (106), Comoros (86), Marshall Islands (73), Liberia (72), and the UAE (68).

Fleet composition included 149 bulk carriers, 138 product tankers, 78 crude tankers, 61 container ships, 41 LNG and LPG carriers, and 34 chemical tankers.

Dark activity events increased to 123, indicating a renewed rise in deceptive shipping practices even as overall AIS compliance improved during transit.

Outlook

Transit through the Strait of Hormuz is recovering, but under controlled conditions defined by full visibility, enforcement presence, and continued sanctions pressure.

The interception of LPG SEVAN signals that U.S. enforcement is expanding beyond chokepoints into open-sea operations, increasing exposure for sanctioned vessels across a wider geographic area.

At Kharg Island, export activity remains active, but the growing anchorage queue points to sustained pressure on throughput and constrained flow dynamics.

Across the Gulf, vessel activity is rebuilding, but the rise in dark activity alongside full AIS compliance during transit highlights a dual operating model, where visibility is selectively applied while deception persists elsewhere.

The operating environment is defined by partial recovery, active enforcement, and ongoing adaptation by high-risk maritime networks operating under sustained pressure.