Lloyd’s of London faces £1.4B in losses as US-Iran conflict chokes the Gulf

The last time marine insurers faced anything close to this was the tanker wars of the 1980s. What’s unfolding in the Gulf right now is shaping up to be worse.

Lloyd’s of London is facing an estimated £1.4 billion in losses tied to the US-Iran conflict, a crisis that erupted in earnest on February 28, 2026, when US and Israeli airstrikes hit Iranian positions and Tehran responded by blockading the Strait of Hormuz. The insurance bill has only grown since.

How bad is the damage

Marine insurers across the London market have collectively racked up estimated claims of between $1.5 billion and $2 billion as of late August 2026, with projections that total losses could climb as high as $3 billion.

That figure covers damaged vessels, stranded shipping, cargo losses, and, grimly, loss of life. At least 14 to 17 seafarers have been killed in the conflict as of mid-2026.

The losses are concentrated in three specific insurance lines: hull war, cargo, and energy. These are exactly the products you’d expect to take the hit when a major global chokepoint turns into an active war zone.

Between 1,000 and 1,150 vessels are currently stranded or threading their way through high-risk zones. Collectively, those ships represent tens of billions in hull value alone, possibly well over $100 billion when cargo is factored in.

War risk premiums have gone through the roof

Before the conflict, shipping companies paid roughly 0.25% of a vessel’s hull value to insure against war risk in the Gulf region. That rate has since surged to between 3% and 10% at its peak, a 12- to 40-fold increase depending on the route and vessel type.

To put that in practical terms: a tanker with a hull value of $100 million that previously cost $250,000 to insure against war risk for a single voyage is now facing a bill of $3 million to $10 million for that same trip.

Lloyd’s has emphasized its commitment to providing coverage throughout the escalation and has moved to create new capacity rather than pull back. In collaboration with Chubb, Lloyd’s launched new war risk consortia in 2026 offering combined capacity worth up to $400 million, a direct response to fears that private insurance would effectively abandon the region.

A short-lived ceasefire in June 2026 offered a brief window of optimism. It didn’t hold. Hostilities resumed, premiums remained elevated, and the stranded vessel count continued to climb.

For marine insurers, the 2026 conflict is a stress test on a scale the industry hasn’t seen in decades. Drones, missiles, and sea mines don’t behave like the threats insurers modeled their Gulf war risk products against, and underwriters are repricing in real time rather than during an orderly annual renewal cycle.