Escalation in the Persian Gulf: A Timeline of Maritime Incidents
A series of maritime incidents involving commercial vessels, military forces, and government seizures have been reported in and around the Strait of Hormuz and the Persian Gulf. The events span multiple days and involve various claims and counterclaims from the United States, Iran, and other parties.
Approximately 20% of the world's oil and gas typically transits through the Strait of Hormuz. Shipping traffic has decreased significantly since February 28.
Vessel Attacks and Strikes
Multiple Commercial Vessels Struck on a Single Day
On a recent Wednesday, the United Kingdom Maritime Trade Operations (UKMTO) reported that three vessels operating off Iran's coast were struck by projectiles.
- One vessel was struck 11 nautical miles north of Oman, within the Strait of Hormuz, causing a fire and leading to crew evacuation.
- Two additional incidents occurred that same morning: one vessel struck approximately 50 nautical miles northwest of Dubai, and another sustained damage off the coast of the United Arab Emirates.
The Mayuree Naree – Thai-Flagged Bulk Carrier
The Thai-flagged bulk carrier Mayuree Naree was struck by projectiles while transiting the Strait of Hormuz. The vessel sustained a fire and damage to its engine room.
Three crew members were reported missing, believed to be trapped in the engine room. The remaining 20 crew members were safely evacuated and were in Oman.
Iran's Islamic Revolutionary Guard Corps (IRGC), via the Tasnim news agency, stated the ship was "fired upon by Iranian fighters" for allegedly disregarding warnings.
The MKD VYOM – First Recorded Iranian USV Attack
The Marshall Islands-flagged oil tanker MKD VYOM was struck by an Iranian uncrewed surface vessel (USV) approximately 50 nautical miles north of Muscat, Oman.
The Ambrey maritime security firm reported this as the first documented use of an Iranian USV in an attack during the current conflict. The UKMTO confirmed the attack, and V.Ships Asia, the owner, reported an explosion and subsequent fire, resulting in one crew member fatality.
The ONE Majesty – Japanese Container Ship
The Japan-flagged container ship ONE Majesty sustained minor damage from an unknown projectile approximately 25 nautical miles northwest of Ras Al-Khaimah, UAE. The vessel was struck while anchored, with minor damage above the waterline. All crew members were reported safe, and the vessel remained operational.
The Star Gwyneth – Marshall Islands Bulk Carrier
The Marshall Islands-flagged bulk carrier Star Gwyneth was struck by an unknown projectile about 50 nautical miles northwest of Dubai, damaging the hull. The crew was reported safe.
The STENA IMPERATIVE – U.S.-Flagged Tanker
The U.S.-flagged oil tanker STENA IMPERATIVE sustained at least two direct hits from a suspected Iranian projectile while in the Port of Bahrain. A fire onboard was later extinguished, and the crew was safely evacuated.
Tanker Seizures
The Talara Seized in the Strait of Hormuz
The IRGC announced the seizure of the Talara, a Marshall Islands-flagged tanker, in the Strait of Hormuz. The IRGC stated the vessel was found to be "in violation of the law by carrying unauthorised cargo."
The vessel's reported route was from the United Arab Emirates to Singapore. The company managing the ship confirmed losing contact with its crew when the tanker was approximately 20 nautical miles off the coast of Sharjah's Khorfakkan port.
Two Tankers Seized Near Farsi Island
Iran's Revolutionary Guard Navy seized two foreign oil tankers in the Persian Gulf near Farsi island, on claims of smuggling fuel, including diesel.
General Heidar Honarian Mojarrad, a regional commander, indicated the tankers were carrying approximately 1 million liters of fuel. The vessels were transferred to Bushehr. Fifteen crew members from the two tankers were taken into custody by judicial bodies.
Vessel Harassment
The STENA IMPERATIVE, a U.S.-flagged tanker, was approached by three pairs of small armed boats from the IRGC approximately 16 nautical miles north of Oman's coast in the Strait of Hormuz.
Iranian gunboats contacted the tanker via radio, instructing the captain to stop and prepare for boarding.
The tanker reportedly increased speed and maintained its course without entering Iranian territorial waters. The vessel was subsequently escorted by a U.S. warship en route to its destination in Bahrain.
Iran's Fars news agency, citing unnamed government officials, denied this account, claiming a vessel was intercepted after entering Iranian territorial waters without permission.
Military Exchanges
U.S. and Iranian Accounts
U.S. Central Command (CENTCOM) stated that three U.S. Navy destroyers were transiting the Strait of Hormuz toward the Gulf of Oman when Iranian forces launched multiple missiles, drones, and small boats. CENTCOM reported that U.S. forces responded with self-defense strikes, eliminating inbound threats and targeting Iranian military facilities, including missile and drone launch sites. No U.S. assets were struck.
An Iranian military official accused the U.S. of violating a ceasefire by striking an Iranian tanker in Iranian coastal waters. Iran's armed forces reportedly retaliated by attacking U.S. military vessels east of the Strait of Hormuz and south of Chabahar Port.
U.S. Military Operations
U.S. Navy Seahawk helicopters destroyed six Iranian speedboats on April 7, 2025, according to U.S. Central Command. Iran rejected U.S. claims of an attack on its boats.
Satellite imagery has shown damaged Iranian navy vessels at Bandar Abbas port. The Institute for the Study of War identified one source of smoke as a ship appearing to be the IRIS Kurdistan, a converted oil tanker. The United States has claimed to have sunk 11 Iranian ships in the Gulf of Oman since the conflict began.
Strait of Hormuz: Status and Warnings
Closure Threats and Mine Deployment
The IRGC initially declared the Strait of Hormuz closed to all ships via a radio transmission. The IRGC later updated this warning, stating that any ships attempting to pass through would be set ablaze.
A U.S. official has stated that U.S. monitoring does not corroborate the IRGC's claim of the Strait being closed.
Reports from Reuters, citing unnamed sources, indicated Iran had deployed approximately a dozen mines in the Strait. U.S. President Donald Trump stated that U.S. forces struck 28 Iranian mine-laying vessels.
Shipping Traffic Declines
Shipping traffic through the Strait of Hormuz has reportedly decreased significantly since February 28, following airstrikes initiated by the U.S. and Israel against Iran.
IRGC Spokesperson's Statements
An IRGC spokesperson, Alimohammad Naini, stated that Iran "welcomes the escort of oil tankers and that U.S. forces will be there for the crossing of the Strait of Hormuz." He further advised U.S. forces to "remember the fire on the American supertanker Bridgeton in 1987 and the oil tankers that were recently targeted."
Diplomatic Context
Talks Scheduled in Oman
The U.S. and Iran were scheduled to hold diplomatic talks in Oman. White House Press Secretary Karoline Leavitt stated that President Trump possesses various military options as Commander-in-Chief.
U.S. envoys Steve Witkoff and Jared Kushner were expected to consult with Qatar's Prime Minister ahead of the Oman talks.
Proposed Nuclear Framework
A proposed framework for an agreement, reportedly obtained by Al Jazeera, suggested Iran would commit to zero uranium enrichment for three years, followed by a limit below 1.5 percent. Its current stockpile of highly enriched uranium would be transferred to a third country.
Divergence on Scope
A significant divergence existed regarding the scope of these talks. Iran aimed to limit discussions to its nuclear program, while U.S. Secretary of State Marco Rubio indicated the Trump administration sought a broader agenda, including Iran's ballistic missile range, sponsorship of regional organizations, and the nuclear program.
Ceasefire Under Strain
A ceasefire between the U.S. and Iran, which began on April 8 as a two-week temporary truce and was unilaterally extended by President Donald Trump, has been damaged by repeated accusations of breaches.
Additional Regional Incidents
Ras Tanura Oil Refinery Attack
Satellite imagery documented the aftermath of an Iranian drone attack on the Ras Tanura oil refinery in Saudi Arabia. The Saudi Aramco-owned facility was temporarily closed following the incident. Saudi Arabia's defense ministry reported the interception of two drones over the refinery, with debris causing a fire.
Natanz Nuclear Facility Damage
New damage was identified at Iran's Natanz nuclear facility. Analysis by the Institute for Science and International Security (ISIS) indicated damage to two personnel entrances and one vehicle access ramp at the underground site. ISIS reported the facility has been non-operational since June 2025.
Attacks Near Iraq
Iraqi port officials reported that the Marshall Islands-flagged Safesea Vishnu and the Zefyros, carrying fuel from Iraq, were targeted in late-night attacks in the Gulf near Iraq. One Iraqi security source stated the Zefyros was flagged in Malta.
A foreign crew member's body was recovered, and Iraqi rescue teams continued searching for additional missing seafarers.
Indian Crew Member Killed
India's embassy in Baghdad reported that an Indian crew member aboard a U.S.-owned crude oil tanker was killed in an attack near Basra, Iraq. The remaining 15 Indian crew members of the Safesea Vishnu were evacuated to a safe location.
Impact on Shipping and Markets
Major maritime insurers have announced intentions to suspend coverage for ships operating in Iranian waters and specific areas of the Gulf.
Oil prices surpassed $100 per barrel, and global stock markets recorded losses. Energy market analysts projected continued volatility.