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Iranian Small Boats Put Hormuz Shipping Under Pressure
UKMTO and CENTCOM reports in May 2026 put Iranian small attack boats at the center of renewed Strait of Hormuz shipping threats, from a bulk-carrier attack west of Sirik to U.S. claims that helicopters sank six boats threatening commercial traffic.
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Small craft become the visible threat
A May 3 UKMTO warning reported that the master of a northbound bulk carrier said the vessel was attacked by multiple small craft 11 nautical miles west of Sirik, Iran. UKMTO said the crew were safe and reported no environmental impact, while Al Jazeera's follow-up placed the incident near the Strait of Hormuz and tied it to the wider pressure on shipping in the waterway.
The incident matched the operating problem described in recent reporting on Iran's fast-boat force: small craft can create risk for commercial vessels without needing the endurance or survivability of a conventional surface fleet. The cataloged Iranian small attack boats page covers that mixed IRGC Navy family rather than one specific model.
Sources: UKMTO Warning 050-26, Al Jazeera: Bulk carrier attacked by multiple small craft off Iran, Reuters: Iran fast-boat swarms add to Hormuz threats for shipping
CENTCOM says six boats were sunk
CENTCOM commander Adm. Brad Cooper said on May 4 that Iranian cruise missiles, drones, and small boats had been launched at ships protected by U.S. forces during an operation to reopen a passage through the Strait. He said AH-64 Apache and MH-60 Seahawk helicopters eliminated six Iranian small boats that were threatening commercial shipping.
In the same media call, Cooper said the small boats had been directed against commercial ships, while cruise missiles and drones were also used in the broader attack pattern. Reuters reported the same U.S. account of six Iranian small boats destroyed alongside missile and drone interceptions.
Sources: CENTCOM: Adm. Brad Cooper media call, Reuters: US says it sinks Iranian small boats
Why the boat fleet matters
Iran's small-boat force is strategically important because it is dispersed, cheap compared with major warships, and suited to the short distances and cluttered traffic of the Persian Gulf and Strait of Hormuz. ABC News described the force as a means of disruption rather than a tool for permanently closing the strait, while WIRED highlighted the mix of small vessels, missiles, guns, and drones in Iran's asymmetric maritime approach.
That context is the reason this article links the family-level Iranian small attack boats catalog entry. The sources do not identify a single named boat class in the May 3 bulk-carrier incident or CENTCOM's May 4 account, so assigning the event to a narrower class such as Ashura, Peykaap, or Zolfaghar would go beyond the public evidence.
Sources: ABC News Australia: Iran's mosquito fleet a weapon of mass disruption, WIRED: Iran Is Using Tiny Mosquito Boats, Reuters: Iran fast-boat swarms add to Hormuz threats for shipping
Follow-on Strait transit
CENTCOM said on May 7 that Iranian forces launched missiles, drones, and small boats as USS Truxtun, USS Rafael Peralta, and USS Mason transited the Strait of Hormuz to the Gulf of Oman. The command said no U.S. assets were struck and that U.S. forces intercepted threats and carried out self-defense strikes.
Taken together, the May 3 warning, May 4 media call, and May 7 CENTCOM release show the same cataloged weapon family appearing across commercial-shipping and naval-transit reporting. The exact craft, armament, and operators in each event remain source-limited, but the role is clear: fast small boats were part of Iran's pressure campaign around Hormuz.
Sources: CENTCOM Protects U.S. Warships Transiting Strait of Hormuz, UKMTO Warning 050-26, CENTCOM: Adm. Brad Cooper media call