- Only three vessels transited the Strait of Hormuz on 7 March 2026, a 25% decrease from the previous day.
- Over 1,650 ships experienced GPS and AIS jamming, with incidents rising 55% in a week.
- Withdrawal of war risk insurance by P&I clubs has created a de facto closure, shifting traffic to Bab el-Mandeb and the Suez Canal.
On 7 March 2026, global maritime traffic through the critical Strait of Hormuz fell to just three crossings. This sharp decline, reported by intelligence firm Windward, results from escalating Iranian hostilities and a simultaneous collapse in war risk insurance. Operators are now compelled to reroute vessels through alternative corridors like Bab el-Mandeb and the Suez Canal in real-time.
CONTEXT AND BACKGROUND
The Strait of Hormuz has long been a strategic bottleneck, handling approximately 20% of global oil shipments. Historical conflicts, such as the Iran-Iraq war in the 1980s, caused disruptions, but never with this mix of kinetic and financial risks. Recent escalations, including attacks on vessels like the tanker PRIMA, have heightened tensions to unprecedented levels in decades.
Global reliance on maritime insurance adds complexity. P&I clubs (Protection and Indemnity clubs, mutual associations providing liability insurance to shipowners) insure 90% of ocean-going tonnage and depend on re-insurance from markets like London. When they withdraw coverage in war zones, as occurred after recent incidents, commercial traffic freezes immediately.
IN-DEPTH TECHNICAL ANALYSIS
The closure mechanism is structural, not just military. P&I clubs issued 72-hour cancellation notices for war risk coverage in the Gulf, causing premiums to rise from 0.25% to over 0.5% of vessel value per transit. Without insurance, shipowners cannot legally operate in high-risk waters, leading to dozens of vessels accumulating near Fujairah.
A selective transit model has emerged. Of the 18 ships that crossed Hormuz since 2 March, 44% had high-risk profiles, including sanctioned or Iran-linked vessels. This suggests only operators with limited exposure to Western finance, such as shadow fleets, are willing to assume the risks.
Electronic interference exacerbates the situation. More than 1,650 vessels experienced GPS jamming (interference distorting positioning signals) and AIS (Automatic Identification System, used for tracking and collision avoidance) disruptions on 7 March, with false signals placing them on land or in clusters near the Gulf of Oman. This degrades situational awareness and increases collision risks.
CONCRETE OPERATIONAL IMPLICATIONS
Captains and officers must prioritise alternative routes. Bab el-Mandeb recorded 34 crossings on the same day, a 47.8% increase from the previous day, while the Suez Canal saw 43 crossings. This unevenly redistributes cargo, raising operational costs and transit times to avoid Hormuz.
For vessels still transiting, security measures intensify. They must navigate with AIS active but distrust positions, and consider convoys or escorts if possible. Incidents like the sinking of the tugboat MUSAFFAH 2, with three missing persons, underscore the need for reinforced emergency protocols.
IMPACT ON THE LABOUR MARKET
For crew and officers, this creates a high-stress environment demanding specialisation. More courses are needed in war risk management and navigation under interference. Mariners from nationalities like Indonesia, India, or the Philippines, involved in incidents such as the MUSAFFAH 2, may face increased caution in hiring for hot zones.
Labour opportunities could arise in alternative routes, like the Cape of Good Hope, though its traffic fell to 47 crossings, a 38.96% decrease. Shipowners and operators might seek personnel experienced in diversion logistics and sanctions compliance.
MACRO CONTEXT
Geopolitically, this crisis reflects tensions between Iran and Western actors, with implications for global energy stability. Normatively, bodies like the IMO (International Maritime Organization) could push for new guidelines on insurance and electronic interference, though responses have been slow.
Trends such as using shadow fleets to evade sanctions intensify, as seen with vessels like the M/V TRUST conducting ship-to-ship transfers in the Gulf of Oman. This challenges compliance efforts and heightens maritime security risks.
OUTLOOK
Short-term, Hormuz traffic may remain low if insurance is not restored. Bab el-Mandeb and Suez are expected to continue absorbing cargo, but with their own bottlenecks. Investors should monitor insurers and shipping companies exposed to alternative routes, recalling that all investments carry risks.
Technologically, demand for anti-jamming systems and alternative insurance, such as private capital funds, could grow. However, normalisation depends on conflict de-escalation, which is uncertain given recent attacks.
FAQ
What are P&I clubs and why are they crucial? Protection and Indemnity clubs are mutual associations that provide liability insurance to shipowners. They insure 90% of global tonnage, and their reliance on re-insurance makes them vulnerable in crises, such as the withdrawal of coverage in Hormuz.
How does GPS jamming affect navigation? GPS jamming distorts positioning signals, creating false alerts in AIS and reducing situational awareness. This increases collision risks and complicates regulatory compliance, especially in congested corridors.
What vessels still cross Hormuz and why? Primarily high-risk vessels, such as sanctioned or Iran-linked ships operating outside Western financial networks. These include tankers from shadow fleets and Chinese vessels signalling non-Western affiliation in AIS.
What training opportunities arise from this crisis? Courses in war risk management, navigation under electronic interference, and international sanctions compliance, offered by maritime academies and bodies like the STCW (Standards of Training, Certification and Watchkeeping for Seafarers).
Editorial Note: This article has been professionally adapted from Spanish to British English
for the WishToSail.com international maritime audience. Original article published at
QuieroNavegar.app.
