Key Takeaways

• Iran claims to have seized the Honduras-flagged Hui Chuan in the Gulf of Oman.
• The vessel reportedly operated as a floating armoury for maritime security firms.
• Indian officials confirm a separate vessel, Haji Ali, sank near Oman with all crew safe.
• US President Trump and Chinese President Xi discussed the Strait of Hormuz situation.
• China opposes the militarization of the Strait, highlighting growing diplomatic friction.

A vessel reportedly operating as a floating armoury in the Gulf of Oman has been seized by Iranian military personnel, according to the maritime risk management company Vanguard. The ship is now bound for Iranian territorial waters, the UK's Maritime Trade Operations (UKMTO) organisation said. BBC Verify checked ship-tracking data from MarineTraffic which shows the vessel - identified by Vanguard as the Honduras-flagged Hui Chuan - last broadcast its location 70km (40 miles) north-east of Fujairah in the UAE on Wednesday.

Hui Chuan's operators told Vanguard it was storing weapons for security firms who protect ships at sea from attack by pirates. BBC Verify cannot confirm what was on the ship or who it was used by. The BBC has previously reported how these vessels are based in the Red Sea, Gulf of Aden and Gulf of Oman so security guards can easily collect and drop off weapons and ammunition. Location data shows the ship has spent the last month off the north-east coasts of Oman and the UAE.

The apparent Iranian seizure of Hui Chuan comes after an Indian-flagged vessel was attacked off the coast of Oman on Wednesday, according to Indian officials. The Haji Ali reportedly sank off the coast of Oman, following a suspected explosion believed to have been caused by a drone or missile, according to Vanguard.

"All Indian crew on board are safe and we thank the Omani authorities for rescuing them," Indian authorities said on Thursday. Ship-tracking data from MarineTraffic shows the 57m (187ft) vessel left Berbera Port in Somalia on 6 May. Its intended destination was Sharjah in the UAE, the Indian shipping ministry said.

The ship was carrying livestock when a fire reportedly broke out onboard, forcing the crew to abandon ship before the vessel sank, Vanguard said. Fourteen crew members were transferred by Oman Coast Guard units to the country's Diba Port, according to Indian officials.

The situation in the Strait of Hormuz was discussed during talks on Thursday between US President Donald Trump and his Chinese counterpart President Xi Jinping in Beijing. The White House said Xi had made clear China's opposition to the militarization of the Strait.

Strategic Implications of Strait of Hormuz Tensions

The incident involving the Hui Chuan marks a significant escalation in maritime tensions within the Strait of Hormuz, a critical chokepoint for global energy supplies. The designation of the vessel as a floating armoury suggests that private military contractors are increasingly involved in the security dynamics of the region, potentially complicating state-level diplomatic efforts. The simultaneous sinking of the Haji Ali, while resulting in no loss of life, indicates a volatile environment where non-state actors or hostile forces may be testing maritime boundaries with increasing aggression.

The diplomatic dialogue between US President Donald Trump and Chinese President Xi Jinping highlights the global stakes of these local incidents. China's explicit opposition to the militarization of the Strait underscores its role as a key stakeholder in ensuring the free flow of commerce. As Iran asserts control over these waters, the international community faces the challenge of balancing diplomatic engagement with the need to protect commercial shipping interests. The region stands at a precipice where economic stability is directly tied to military posturing, requiring sustained attention from both regional and global powers to prevent further escalation. The coming weeks will likely see increased scrutiny on maritime insurance rates and naval patrols in the Gulf, as nations attempt to stabilize the volatile security landscape without triggering a broader conflict.