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Jun 18, 2026 Major2
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Saudi Oil Tankers Resume Transit Through Strait of Hormuz Following US-Iran Agreement

Three Saudi oil tankers carrying 6 million barrels of crude oil transited the Strait of Hormuz on June 18, the largest shipment through the waterway in weeks, following a US-Iran memorandum of understanding to end their conflict. An LNG carrier also passed through, marking the first such vessel since February when hostilities began effectively blockading the strategic passage. The transit signals the beginning of maritime normalization under a 60-day agreement to ensure safe commercial shipping in the region.

Quick Facts
Who
Saudi Arabia
What
Three Saudi-flagged supertankers transited Strait of Hormuz
When
June 18, 2026
Where
Strait of Hormuz
- Three Saudi-flagged supertankers transited Strait of Hormuz
- Vessels carried 6 million barrels of crude oil
- LNG carrier Mureih passed through strait
- US-Iran memorandum of understanding announced
- US to lift maritime blockade on Iran
Three Saudi-flagged supertankers carrying 6 million barrels of crude oil transited the Strait of Hormuz on June 18, marking the largest oil shipment through the strategic waterway in weeks following a US-Iran memorandum of understanding to end their conflict. Ship tracking data confirmed the passage hours after the agreement was announced, with vessels publicly displaying their navigation routes for the first time in recent weeks. An LNG carrier, the French-flagged Mureih, also successfully transited the strait on the same day, representing the first liquefied natural gas vessel to pass through the passage since the outbreak of Iran-related hostilities on February 28.
The Strait of Hormuz, which carries approximately one-fifth of global oil supplies, had been effectively blockaded for over three months, preventing hundreds of millions of barrels of crude from departing Persian Gulf producer ports. During this period, Saudi Arabia diverted its exports through the Red Sea terminal at Yanbu as an alternative route. The resumption of direct transit signals a significant shift in regional maritime operations and global energy flows.
Under the terms of the memorandum of understanding released on June 17, the United States committed to immediately lifting its maritime blockade on Iran, while Iran agreed to ensure safe passage for commercial vessels transiting between the Persian Gulf and Gulf of Oman within a 60-day timeframe. However, Iran's Islamic Revolutionary Guard Corps Navy indicated that vessel coordination remains necessary for passage through the strait. International Energy Agency director Fatih Birol stated that the Strait of Hormuz "must be unconditionally reopened," with negotiations expected to be completed within the 60-day window.
The return of visible shipping routes on public tracking platforms suggests renewed confidence in the corridor's security. Shipping analysts noted that vessels had previously obscured their navigation data due to regional tensions, making the public display of routes a notable indicator of de-escalation. The successful passage of both crude oil and LNG cargo reflects initial confidence in the implementation of the newly signed agreement.
Why This Matters
The Strait of Hormuz carries roughly one-fifth of global crude oil, making its reopening critically important for energy security and global markets. This transit demonstrates that the US-Iran agreement has immediate, measurable impact on supply chains—crude oil can now reach global markets directly instead of expensive rerouting through the Red Sea. For consumers and businesses, this means potential stabilization of oil prices and reduced shipping costs. Investors and policymakers should monitor whether the 60-day window produces a permanent resolution, as any backsliding could quickly reimplement regional tensions.
Timeline & Sources
Feb 28, 2026
WireIran conflict outbreak; effective blockade of Strait of Hormuz begins
Jun 17, 2026
WireUS and Iran release formal memorandum of understanding text
Jun 18, 2026
WireThree Saudi oil tankers (6 million barrels) and LNG carrier Mureih transit Strait of Hormuz; vessels display navigation routes publicly