Commercial Shipping Through Hormuz Operates Under Dark Conditions
Commercial shipping through the Strait of Hormuz increasingly appears to be operating under dark or emissions-controlled conditions. IRGC fast craft activity expanded across both Hormuz corridors, including swarm-style formations and escort-like behavior near commercial traffic. Windward identified nine commercial tanker transits through Hormuz on May 11, including dark fleet-linked LPG and product tankers.
Operational Overview
Commercial shipping and maritime security activity around the Strait of Hormuz are increasingly shifting into dark or emissions-controlled conditions. During the reporting period, Windward observed expanded IRGC fast craft activity near commercial corridors, continued dark and EMCON tanker transits through Hormuz, growing concentrations of staged dark tankers near Larak and Chabahar, and escalating U.S. interdiction activity against Iran-linked vessels.
Commercial traffic through the Strait continues despite the deteriorating environment. Windward identified multiple inbound and outbound tanker movements, including dark fleet-linked LPG and product carriers, VLCC transits toward Kharg Island, and the first successful Qatar LNG transit through Hormuz since the February closure. At the same time, vessels are increasingly displaying adaptive operating behavior, including prolonged dark anchorage periods, ship-to-ship transfers, and possible physical hull-protection measures.
IRGC Fast Craft Operations Intensify Near Commercial Traffic
IRGC-linked fast craft activity intensified across the Strait of Hormuz operating area during the reporting window. On May 7 at 07:04 UTC, imagery identified two separate clusters of high-speed small vessels moving on broadly aligned headings toward the northern corridor. The northern cluster included approximately 15–20 small fast craft, while the southern cluster included approximately 20–25 small fast craft.
Both groups displayed pronounced wake signatures consistent with speeds above 20 knots. The southern cluster was more tightly grouped and showed characteristics consistent with a coordinated swarm posture, while the northern cluster appeared more dispersed, consistent with an area patrol or screening formation. The two clusters were separated by approximately 8.7 nautical miles, confirming they were separate concurrent groups rather than the same formation observed twice.
RF collections during the same operating period showed no interceptions in the northern corridor or confirmed tanker departures from Kharg Island after May 7.
Vessels Mentioned
- TARA GAS (IMO: 9290270)
- AL KHARAITIYAT (IMO: 9397327)
- JIN LI (IMO: 9855525)
Original Article: Dark Shipping and IRGC Activity Intensify Around Hormuz — Windward