Skip to content
Welcome, thoughtbot's Giant Robots listeners!Start here
Russia-Ukraine War 2026
12OCT

Korean ships sail past the IRGC order

3 min read
10:59UTC

Five more South Korean-operated vessels cleared the Strait of Hormuz on 25 June, 11 of roughly 24 stranded, sailing under a toll-free window and ignoring the IRGC's compulsory Channel 16 mandate declared the same day.

ConflictDeveloping
Key takeaway

Korean vessels treated the IRGC's Channel 16 order as words, transiting Hormuz without coordinating or being stopped.

Five more South Korean-operated vessels cleared the strait of Hormuz on Thursday 25 June, bringing the total to 11 of roughly 24 stranded since Iran's Islamic Revolutionary Guard Corps (IRGC) closed the waterway on 11 June⁠1. The ships sailed under the toll-free window of the Islamabad memorandum and did not coordinate with the Channel 16 mandate the IRGC had just declared compulsory that morning. South Korea's Ministry of Oceans and Fisheries said its ships were "passing through the strategic waterway and sailing normally"⁠2.

the strait of Hormuz is the narrow gap between Iran and Oman that carries roughly a fifth of global seaborne crude. South Korea is a flag state whose vessels were caught on the wrong side of the closure, and its government is the actor here, not Tehran. Twenty-one Korean sailors were aboard the five ships that left; 13 vessels remain stranded. Seoul's ministry confirming a normal transit is, in practice, a refusal to enforce the corps's order on its own fleet.

This is where the action-versus-words ledger lands on the water. The IRGC issued its mandate; the Korean masters declined to acknowledge it and sailed regardless. The corps had already demanded insurance registration and scheduled tolls from August, yet has interdicted no foreign hull to back any of it. Each Korean departure widens the distance between what Iran says governs the waterway and what actually moves through it.

Deep Analysis

In plain English

When Iran's military declared the strait of Hormuz closed in mid-June, about 24 South Korean cargo ships became stuck inside The Persian Gulf with their crews aboard, unable to leave. On 25 June, five more of those ships managed to sail out through the strait. They used a route announced by international shipping organisation the IMO and Oman, which Iran's military had declared unacceptable that same day. The ships sailed anyway, ignoring Iran's demand to radio the Guards Corps for permission first. By the end of Thursday, 11 of the 24 had made it out. Thirteen remain inside. South Korea's government confirmed the ships were passing through 'normally' but said nothing about the IRGC's Channel 16 instruction.

Deep Analysis
Root Causes

South Korea's vulnerability stems from a structural dependency: it imports roughly 60% of its crude from Gulf producers, and a significant fraction transits Hormuz directly. The 24 stranded vessels reflect the pre-war routing optimisation in which Korean operators ran eastern-destination cargoes through the strait rather than adding 1,200 nautical miles via the Cape of Good Hope bypass.

Seoul's foreign-policy neutrality explains the approach. South Korea maintains full diplomatic relations with both Iran and the United States and has avoided taking a formal side in the Hormuz governance contest. That neutrality is the precondition for the MOU-window transit: Korea can use the Oman-IMO framework precisely because it has not publicly backed any claimant, and it can ignore the IRGC mandate precisely because it has not endorsed it.

What could happen next?
  • Precedent

    Seoul's transit without Channel 16 acknowledgement establishes a de facto governance norm: the Oman-IMO corridor trumps the IRGC mandate in practice, regardless of the legal contest, as long as the corps does not enforce.

  • Risk

    The 13 remaining Korean vessels represent a leverage point: the IRGC could detain one to reassert the Channel 16 authority the Korean transits have implicitly negated, triggering a diplomatic crisis between Seoul and Tehran.

First Reported In

Update #138 · Three flags over Hormuz, none enforced

Korea Times· 25 Jun 2026
Read original →
Different Perspectives
Government of Latvia
Government of Latvia
Latvia abstained on 22 September when the EU renewed its individual sanctions for 36 months at the price of delisting Alisher Usmanov and Mikhail Fridman, and promised national sanctions of its own. Riga's abstention marks how far a frontline member state will go to keep listed names listed.
India's Ministry of External Affairs
India's Ministry of External Affairs
After the House passed the Graham bill on 16 September, India's foreign ministry said it would keep buying energy on market terms and protect its trade. Russia supplied 30.3% of India's crude imports in fiscal 2026, so the tariff decision due around 18 October falls directly on New Delhi.
Kaja Kallas, EU foreign policy chief
Kaja Kallas, EU foreign policy chief
Kallas answered the US licence on 10 October by saying Europe would not ease pressure, and EU ministers adopted a 22nd package of nearly 1,600 listings two days later. Brussels is tightening as Washington loosens, though TASS reported the package adds no significant new trade restrictions.
Donald Trump and the US Treasury
Donald Trump and the US Treasury
The Treasury licensed Russian diesel imports until 7 April 2027 on the day of Trump's call with Putin, and Trump then told reporters Ukraine should find a new leader. Washington is trading sanctions relief for fuel supply while pressing Kyiv to halt the refinery strikes behind the shortage.
Kremlin and Deputy Prime Minister Alexander Novak
Kremlin and Deputy Prime Minister Alexander Novak
After the 9 October call the Kremlin said Russia was ready to supply oil and petroleum products to American and global markets, and Novak brought forward the end of diesel export curbs. Moscow is selling the shortage back as goodwill, with volumes that Decree No. 686 now hides from outside checks.
Volodymyr Zelenskyy, President of Ukraine
Volodymyr Zelenskyy, President of Ukraine
Zelenskyy called GL 135 an investment in prolonging the war and offered to stop striking Russian refineries if Russia stops destroying Ukraine's energy system. Answering Trump's call for a new leader, he set a total 60-day ceasefire as the condition for elections, which puts the next move on Moscow.