More than 15 US warships blockade Hormuz: What we know about the fleet
Multiple US navy ships are deployed across the Gulf as Washington moves to stave off Iranian ports following the collapse of US-Iran talks
14 April, 2026
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The US has deployed more than 15 warships to enforce a sweeping naval blockade targeting Iranian ports, according to reporting by The Wall Street Journal.
The operation, launched after the breakdown of US-Iran negotiations on Sunday, is designed to restrict Tehran’s ability to export oil and control maritime traffic through one of the world’s most critical energy chokepoints.
The United States Central Command, in a note to seafarers seen by Reuters, confirmed the blockade came into effect at 14:00 GMT (18:00 UAE time) on Monday.
“Any vessel entering or departing the blockaded area without authorisation is subject to interception, diversion, and capture,” the note said.
Read more: In note to seafarers, US military says Gulf blockade to be enforced
Meanwhile, an advisory from the United Kingdom Maritime Trade Operations said restrictions now apply across Iranian ports and coastal areas spanning the Gulf, Gulf of Oman and parts of the Arabian Sea.
What we know about the fleet
The US naval force is built around a mix of high-capability assets, including aircraft carriers acting as floating airbases, guided-missile destroyers forming the backbone of enforcement, amphibious assault ships capable of deploying Marines and helicopters, and support vessels coordinating operations across the theatre.
While US officials have not released a full list of vessels involved, multiple reports from The Wall Street Journal and Business Insider suggest the fleet includes guided-missile destroyers such as the USS Michael Murphy and USS Frank E. Petersen Jr., which have recently operated in and around the Strait of Hormuz.

The USS Michael Murphy and USS Frank E. Petersen Jr. are Arleigh Burke-class guided-missile destroyers, among the most versatile and heavily armed ships in the US Navy. Designed for multi-role operations, they combine advanced radar systems, long-range missiles and anti-submarine capabilities, allowing them to track threats across air, sea and below the surface.

In a scenario like the Strait of Hormuz, these ships act as frontline enforcers — escorting commercial vessels, monitoring shipping lanes, intercepting suspect traffic and providing air and missile defence for the wider fleet. Their speed, firepower and surveillance capabilities make them critical to enforcing a blockade, particularly in contested waters where risks such as mines, drones and fast-attack craft are elevated.
Read more: Two US warships entered the Strait of Hormuz. Here’s what happened next
Analysts say additional assets likely include Arleigh Burke-class destroyers, carrier strike group elements and amphibious ships positioned across the region — though the exact composition remains fluid and undisclosed.
That uncertainty is deliberate. The US Navy rarely publishes full operational details in active conflict zones, meaning the “more than 15 warships” figure reflects aggregated reporting and defence analysis rather than a confirmed manifest.
Together, these assets allow the US to monitor vast stretches of sea, control shipping lanes and physically enforce the blockade through interception, escort operations and boarding missions.
Why it matters
The Strait of Hormuz is one of the world’s most important energy chokepoints, handling roughly 20 per cent of global oil flows.
The blockade is already reshaping shipping patterns, with vessels rerouting or delaying transit amid heightened security risks. Washington’s strategy appears focused on applying sustained economic pressure on Iran by targeting its export routes, while maintaining control over a critical global trade artery.
The scale of disruption is stark. In normal conditions, around 130 to 135 ships transit the strait dailyl. That flow has now slowed dramatically, with only a handful of vessels, in some cases fewer than 10, passing through in recent days.
Before the crisis, the strait handled roughly 20 million barrels of oil per day, about 20 per cent of global supply. Now, much of that flow has been disrupted, with vessels delaying transit or avoiding the route altogether, raising concerns across global energy markets.
Diplomacy still in play
Despite the escalation, there are signs diplomacy is not entirely off the table.
US Vice President JD Vance overnight said talks with Iran failed to secure agreement on the core issue of Tehran’s nuclear programme, but indicated discussions covered a wide range of topics, including frozen assets, and could continue if positions shift.
The remarks suggest that while the blockade marks a major escalation, it may also serve as leverage in ongoing, albeit fragile, diplomatic efforts.





















