Iran has urged New Delhi to release three seized oil tankers in exchange for assurances that vessels flying the Indian flag or carrying cargo to Indian ports will be allowed safe passage through the Strait of Hormuz, according to officials familiar with the matter, highlighting mounting maritime tensions in a critical global energy corridor.
The proposal follows India’s detention of the tankers Asphalt Star, Al Jafzia and Stellar Ruby on allegations that they obscured ownership details and engaged in unauthorised ship-to-ship transfers, practices often associated with sanctions evasion. Authorities said the vessels were intercepted after tracking irregular movements and documentation discrepancies in waters under Indian jurisdiction. Stellar Ruby sails under Iran’s flag, while Asphalt Star and Al Jafzia are registered to Nicaragua and Mali respectively, raising further scrutiny over beneficial ownership and compliance with maritime regulations.
Tehran’s message, conveyed through diplomatic channels, frames the issue as a reciprocal arrangement tied to the safety of commercial shipping through Hormuz, a chokepoint through which nearly a fifth of global oil supply transits. Officials indicated that Iran’s request seeks both the release of the vessels and the easing of enforcement measures that it considers politically motivated, while offering guarantees aimed at preventing disruptions to India-linked shipping in the region.
The development comes amid heightened sensitivity over shipping security in West Asian waters, where periodic incidents involving seizures, drone threats and navigation interference have unsettled insurers and freight operators. Industry executives say the latest exchange underscores the growing use of commercial shipping as leverage in broader geopolitical disputes, particularly where sanctions enforcement intersects with energy trade routes.
India’s authorities have maintained that the seizures were based on domestic maritime law and international obligations to curb illicit oil transfers. Investigations into the vessels’ activities are understood to have focused on “dark fleet” practices, including switching off tracking systems, conducting mid-sea cargo swaps, and misrepresenting cargo origin. Such methods have been widely documented in efforts to bypass sanctions on oil exports, especially those involving Iran and Russia.
Government officials have not publicly commented on the Iranian proposal, though diplomatic engagement between the two sides is said to be ongoing. Analysts note that India faces a delicate balancing act, given its reliance on imported crude and its longstanding ties with Gulf producers, while also navigating global compliance frameworks and its strategic partnerships with Western economies.
Shipping data suggests that vessels linked to India—either by flag or cargo destination—account for a significant share of tanker traffic through the Strait of Hormuz. Any disruption or perceived threat to passage can have immediate consequences for freight costs, insurance premiums and delivery schedules. Maritime risk consultants say that even implicit warnings can trigger rerouting decisions or the imposition of war-risk surcharges.
Energy market participants are watching the situation closely, as tensions in Hormuz have historically led to price volatility. Traders say that while no direct disruption has occurred, the signalling effect of Iran’s proposal adds a layer of uncertainty to an already fragile supply environment shaped by geopolitical friction, OPEC+ production strategies and fluctuating demand in major consuming economies.
The seized vessels themselves have drawn attention within maritime compliance circles due to their registration and operational patterns. Flagging under countries such as Nicaragua and Mali, often described as “flags of convenience,” can complicate enforcement and obscure ultimate ownership. Regulators have increased scrutiny of such registrations in recent years, particularly where vessels are suspected of engaging in sanctions-sensitive trades.
Legal experts point out that ship-to-ship transfers, while not inherently illegal, become problematic when conducted without proper disclosure or when used to disguise the origin or destination of cargo. India’s case is expected to hinge on evidence of such concealment, as well as any violations of port entry and customs regulations.
Diplomatic observers suggest that Tehran’s linkage of tanker release to shipping guarantees reflects a broader strategy of leveraging control over key maritime routes. While Iran has periodically asserted its influence in Hormuz, it has also sought to avoid actions that could provoke a wider confrontation or disrupt its own export channels.
For India, the episode highlights the intersection of maritime enforcement, energy security and geopolitical signalling. Officials are likely to weigh the legal merits of the case against the potential risks to shipping flows and bilateral relations, particularly at a time when regional stability remains under strain.
