IRGC Gunboats Open Fire on Commercial Tanker Off Omani Coast Following Strait Closure

UKMTO reports IRGC gunboats fired on a tanker 20 miles off Oman. The unprovoked attack follows Iran's reassertion of military control over the Strait of Hormuz.

By: AXL Media

Published: Apr 18, 2026, 7:56 AM EDT

Source: Information for this report was sourced from Reuters

Unprovoked Attack in the Gulf of Oman

An international tanker transiting the Gulf of Oman became the target of maritime aggression on Saturday afternoon when it was approached and fired upon by Iranian military assets. According to an advisory note issued by the UKMTO, the vessel was located approximately 20 nautical miles northeast of the Omani coast when two high-speed gunboats identified as belonging to the IRGC closed the distance. The captain of the tanker reported that the gunboats opened fire using small arms or light autocannons without issuing any prior radio warning or challenge. Despite the kinetic engagement, the vessel’s security team confirmed that the ship sustained no critical damage and all crew members remain unharmed.

Reassertion of Iranian "Maritime Regime"

The shooting incident follows a strategic reversal by Tehran regarding the accessibility of the Strait of Hormuz. Earlier Saturday, Iran’s joint military command declared that the waterway had returned to a state of "strict management" by the armed forces, effectively ending a brief period of managed passage for commercial tankers. Ebrahim Azizi, head of Iran’s parliamentary National Security Commission, stated that a "New Maritime Regime" is now in effect, requiring all commercial vessels to obtain IRGC authorization and pay "required tolls" to transit designated routes. The attack off Oman is viewed by maritime security analysts as a kinetic enforcement of this new policy, aimed at vessels attempting to bypass IRGC coordination.

Retaliation for Persistent U.S. Naval Blockade

Tehran’s re-imposition of maritime restrictions is a direct response to U.S. President Donald Trump’s declaration that the American naval blockade of Iranian ports will remain in "full force." The Iranian military has explicitly linked the freedom of global energy shipments to the lifting of U.S. restrictions on its own trade. By firing on a tanker outside the immediate confines of the Strait, the IRGC is signaling its capability to disrupt shipping lanes further into the Gulf of Oman and the Arabian Sea. This "tit-for-tat" escalation has effectively neutralized the brief 10% drop in oil prices observed on Friday, as insurers and shipping firms once again face extreme risk levels.