Thailand’s Strategy to Secure Safe Hormuz Passage for Three Stranded Ships

The Thai government successfully utilized proactive diplomacy to secure safe passage for three stranded vessels carrying essential energy and petrochemical supplies through the Strait of Hormuz. By coordinating with authorities in Iran and Oman, officials were able to mitigate potential fuel and feedstock shortages that had been threatened by regional geopolitical instability, thereby safeguarding Thailand’s energy security and economic stability.

Key Points

• “Team Thailand,” led by Deputy Prime Minister and Minister of Foreign Affairs Sihasak Phuangketkeow, leveraged bilateral relations with Oman to act as an intermediary with Iran to clear the maritime deadlock.
• PTT Public Company Limited successfully secured the return of the Serifos, a very large crude carrier (VLCC) carrying 2 million barrels of oil, expected to arrive in Thailand by late April 2026.
• Bangchak Corporation safely navigated the MT. POLA, which was carrying 700,000 barrels of crude oil, to its Sriracha refinery on April 7, 2026, after proving the vessel was not a party to the regional conflict.
• SCG Chemicals (SCGC) confirmed that its first vessel carrying 55,000 tonnes of naphtha has been granted passage, though a second vessel remains under safety assessment.
• To maintain domestic supply during the crisis, PTT incurred significant financial burdens, totaling over 230 billion baht, to source replacement crude and manage logistics risks.

“Team Thailand” utilized the following diplomatic strategies to secure the safe passage of vessels through the Strait of Hormuz:

• Proactive Bilateral Engagement: The government employed proactive diplomacy, utilizing existing bilateral ties to negotiate directly with officials in Iran and Oman.
• Strategic Intermediation: Deputy Prime Minister and Minister of Foreign Affairs, Sihasak Phuangketkeow, visited Oman (April 15-17, 2026) to encourage the Omani government to act as an intermediary in discussions with Iran.
• Clarification of Vessel Status: To secure clearance, Thai officials coordinated with the Iranian Embassy in Thailand to formally confirm that the vessels were:
  • Carrying essential energy supplies (crude oil and petrochemical feedstock) for public use.
  • “Not a party to the conflict,” thereby distinguishing the shipments from military or political involvement.

The strategy involved effective communication channels between private corporations (such as Bangchak) and the Ministry of Foreign Affairs, which then facilitated the necessary diplomatic pressure and dialogue to resolve the impasses.

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