The Liberia-flagged Very Large Crude Carrier (VLCC) Serifos and China-flagged VLCCs Cospearl Lake and He Rong Hai transited via a designated passage that bypasses Iran’s Larak Island, according to data from LSEG.

Each vessel has the capacity to carry around 2 million barrels of oil.The Strait of Hormuz, through which about one-fifth of global oil and liquefied natural gas supplies pass, had been effectively blocked by Iran since the outbreak of conflict in late February, contributing to supply disruptions and a sharp rise in oil prices.

Serifos, chartered by Thailand’s state energy firm PTT, is carrying crude loaded from Saudi Arabia and the United Arab Emirates and is expected to arrive at Malaysia’s Malacca port on April 21, according to LSEG and Kpler data. It is among several vessels for which Malaysia had sought clearance from Iran to transit the strait, sources said.

Cospearl Lake, carrying Iraqi crude, is scheduled to reach Zhoushan port in eastern China on May 1, while the discharge destination for He Rong Hai, which is transporting Saudi oil, remains unclear. Both vessels are chartered by Unipec, the trading arm of Chinese energy major Sinopec.

Shipping data also showed that hundreds of tankers remain stranded in the Gulf awaiting passage during the limited ceasefire window, underscoring continued constraints on maritime traffic.At the same time, three empty tankers Mombasa B, Agios Fanourios I and Shalamar were navigating the strait to enter the Gulf and load crude.

One of them signaled plans to load Basrah oil in Iraq for delivery to Vietnam.Industry sources and companies involved did not immediately respond to requests for comment.

The partial resumption of tanker movement highlights the critical role of the Strait of Hormuz in global energy flows and the sensitivity of oil markets to geopolitical developments in the region.

“I welcome the ceasefire agreement reached overnight, which will bring a moment of relief to the region and the world,” Starmer said in a statement, adding that efforts must now focus on sustaining the truce and reopening the vital maritime route.

Starmer said Britain would work with partners to support and uphold the ceasefire and turn it into a lasting agreement, while seeking to protect global economic stability by restoring access through the Strait of Hormuz, a key artery for oil and gas shipments.

The visit comes amid heightened diplomatic activity following the ceasefire, with London positioning itself in efforts to stabilise energy flows and reduce disruption to global markets.

Starmer, who has faced criticism from U.S. President Donald Trump for not backing recent U.S. and Israeli strikes on Iran, has in recent days convened multinational discussions on securing the reopening of the strait.

According to the British government, the prime minister’s discussions in the Gulf will focus on diplomatic measures to reinforce the ceasefire and prevent further escalation that could threaten international trade.

The trip had been scheduled prior to the ceasefire announcement, but now takes on added significance as global attention turns to ensuring uninterrupted passage through one of the world’s most strategically important waterways.

British Foreign Secretary Yvette Cooper also held talks with U.S. Secretary of State Marco Rubio on Tuesday, discussing coordinated diplomatic steps to reopen the strait, including a UK-led meeting last week that brought together more than 40 countries to address the issue.

Speaking at the Egypt Energy Show 2026 in Cairo, Sisi said only Trump had the capacity to end the conflict in the Gulf region, appealing directly for U.S. leadership to prevent further escalation.

“I tell President Trump: nobody can stop the war in our region in the Gulf but you,” Sisi said. “Please help us stop the war. You are capable of doing so.”

Sisi warned that continued targeting of oil production facilities and refineries could trigger simultaneous supply disruptions and price surges, with consequences yet to be fully realised.

He said concerns among market observers that oil could exceed $200 a barrel were credible.“I fear that targeting energy facilities, whether production or refineries, will have very serious repercussions for the global economy and fuel prices,” he said.

The Strait of Hormuz, a key maritime chokepoint that previously handled about a fifth of global oil flows, has been disrupted amid the conflict, raising concerns over sustained supply constraints.

Beyond energy markets, Sisi highlighted risks to global food security, citing potential disruptions to fertiliser exports that could drive up agricultural costs and strain supply chains.

“Wealthy countries might be able to absorb this, but for middle-income and fragile economies, it could have a very, very severe impact on their stability,” he said.

Egypt, a longstanding recipient of U.S. military aid and Gulf financial support, has condemned Iranian attacks on Gulf Arab states while advocating diplomatic efforts to avoid a broader regional war.

Gulf Cooperation Council Secretary-General Jasem Mohamed Albudaiwi said Iranian actions, including attacks on energy infrastructure and the closure of the Strait of Hormuz, constituted a violation of international law and a direct threat to global energy security.

Addressing the conference virtually, he urged the international community to safeguard maritime corridors, as GCC member states Saudi Arabia, the United Arab Emirates, Qatar, Kuwait, Oman and Bahrain face ongoing drone and missile attacks.

Sisi also referenced Trump’s role in ending the Gaza war, noting that the U.S. president had been instrumental in securing a ceasefire agreement reached in Sharm el-Sheikh in November.

The ongoing reduction in Arctic sea ice is beginning to reshape global maritime trade patterns, with shipping companies and governments increasingly evaluating northern sea routes as viable alternatives to traditional corridors such as the Suez Canal.

According to data from the International Maritime Organization, seasonal navigability in Arctic waters has improved over recent decades, allowing limited commercial transit during summer months.

The Northern Sea Route, running along Russia’s Arctic coastline, has drawn particular attention due to its potential to shorten travel distances between Asia and Europe by up to 40% compared with southern routes.

This reduction in distance translates into lower fuel consumption and shorter delivery times, although operational constraints remain significant.

Shipping activity along this corridor remains modest but is increasing incrementally, with vessels requiring ice-class certification and often escort by icebreakers. Russian authorities have expanded infrastructure investments in Arctic ports and navigation systems to support growing traffic.

The expansion of Arctic navigation is directly linked to rising global temperatures and declining ice cover. Scientific assessments indicate that the Arctic is warming at a rate significantly faster than the global average, contributing to longer ice-free periods.

However, variability in ice conditions continues to pose risks, including unpredictable weather patterns and limited search-and-rescue capabilities.Environmental concerns have also emerged as a key constraint.

The Arctic ecosystem is highly sensitive to disturbances, and increased shipping raises the risk of oil spills, black carbon emissions, and disruption to marine biodiversity.

Regulatory frameworks under the International Maritime Organization, including the Polar Code, set standards for safety and environmental protection, but enforcement and monitoring remain complex.

The strategic importance of Arctic routes has heightened geopolitical competition among major powers. Russia maintains the most developed Arctic infrastructure and asserts regulatory control over the Northern Sea Route, while countries including China have described the region as part of a broader “Polar Silk Road” strategy.

The Arctic Council continues to serve as a platform for cooperation on environmental and scientific issues, though it does not govern commercial navigation. Analysts note that the intersection of economic opportunity, environmental risk, and sovereignty claims is likely to shape policy debates in the coming years.

Despite the potential advantages, industry adoption remains cautious due to high insurance costs, limited infrastructure, and legal uncertainties.

As a result, Arctic shipping is expected to complement rather than replace established global trade routes in the near term.