From the Bridge: What the Hormuz Dual-Corridor Actually Means for Crew

From the Bridge

A series that translates maritime events into what they mean for the people actually on the ships.

The headlines focus on oil prices, geopolitical maneuvering, and stock market reactions. But somewhere in the Strait of Hormuz right now, a master mariner is making a decision that no amount of shore-side analysis can adequately capture: whether to take a ship through a waterway where 21 vessels have already been attacked, war risk insurance has been cancelled, and transit is controlled by two competing corridors — one overseen by the IRGC, the other hugging the Omani coast.

This is what that decision looks like from the bridge.

No Insurance, No Cover

Since March 5, war risk insurance for Gulf transits has been cancelled. This is not a premium increase or a higher deductible. It is a complete withdrawal of cover. A vessel that transits the Strait of Hormuz today does so without the safety net that underwrites every normal commercial voyage. If that vessel is struck, the financial consequences fall entirely on the owner — or, more precisely, on whoever was willing to order the transit without cover.

For the crew, this creates a disturbing gray zone. The Maritime Labour Convention requires that seafarers be covered by adequate insurance. When the vessel's war risk cover has been pulled, the question of who is liable for crew injuries or death in a conflict zone becomes painfully unclear.

Two Corridors, Two Gambles

The dual-corridor system sounds organized. It is not. The northern corridor passes near Larak Island under IRGC direction — vessels using it are effectively submitting to Iranian naval authority. The southern corridor follows the Omani coast, keeping maximum distance from Iranian waters. On April 5, five vessels chose the northern route and three chose the southern.

For a bridge team, neither choice is comfortable. The northern corridor means direct communication with IRGC naval forces and compliance with their instructions. The southern corridor means navigating closer to Omani territorial waters in a congested, poorly charted alternative route without the established traffic separation scheme that has governed Hormuz transits for decades.

Eight vessels in a day. Under normal conditions, that is a slow hour.

The Question No One Asks the Crew

Here is what maritime news coverage consistently misses: nobody asks the crew. The decision to transit is made by owners, charterers, and commercial managers ashore. The master can refuse on safety grounds — that is their legal right under SOLAS and the ISM Code. But exercising that right under commercial pressure, in a war zone, with a career on the line, is a different matter entirely.

Filipino seafarers, who make up a significant portion of Gulf-deployed crews, face particular pressure. The Philippine Department of Migrant Workers has issued advisories designating the Gulf as a war-risk zone, but these advisories do not prohibit deployment. They require enhanced benefits. The gap between an advisory and a prohibition is where thousands of seafarers currently live.

What Crews Need Right Now

Clear communication from their companies about the specific insurance cover in place for their vessel, the legal basis for any transit orders through the strait, and explicit confirmation that refusing a transit order on safety grounds will not result in career consequences. The International Transport Workers' Federation has long advocated for these protections, but in a crisis, the gap between policy and practice widens.

Bottom Line

The dual-corridor system is a geopolitical arrangement between states and navies. It was not designed with crew safety in mind. Every vessel that transits Hormuz today carries seafarers who are bearing the physical risk of a conflict they did not choose, on vessels that may lack the insurance cover mandated by international conventions. The industry owes them more than headlines about oil prices.