Iran says tanker defied US blockade; Maritime data links it to India

The tanker Felicity, operated by the National Iranian Tanker Company (NITC), dropped anchor near Sikka on Gujarat's coast — a key crude-handling hub serving ...

What Happened

The tanker Felicity, operated by the National Iranian Tanker Company (NITC), dropped anchor near Sikka on Gujarat's coast — a key crude-handling hub serving Reliance Industries and Bharat Petroleum Corporation — becoming the focal point of a maritime standoff linked to the US blockade of Iranian ports.
After loitering near Jamnagar for approximately one week, Felicity departed the Gulf of Kutch on April 18, reporting empty, turned off its Automatic Identification System (AIS), and was subsequently tracked via satellite passing the US naval blockade zone between April 20 and 21.
Maritime data linked the vessel to Iran despite its AIS being switched off; satellite imagery confirmed the tanker's movements — a practice known as "dark shipping" used to evade sanctions monitoring.
Two sanctioned Very Large Crude Carriers (VLCCs), each carrying approximately 2 million barrels of Iranian oil, were reported anchoring off India after a seven-year gap, indicating an attempted resumption of Iranian crude deliveries.
The US naval blockade of Iranian ports — active since April 13, 2026 — has directed 31 Iran-linked vessels to turn back or return to Iranian ports; the Felicity incident represents one of the first documented attempts to circumvent these restrictions.

Static Topic Bridges

US Sanctions on Iran and Secondary Sanctions: Impact on India

US sanctions on Iran have extraterritorial reach through "secondary sanctions" — restrictions that apply to non-US entities conducting transactions with sanctioned Iranian companies or individuals. The National Iranian Tanker Company (NITC) has been under US sanctions since 2012. Secondary sanctions compel third countries, including India, to choose between trade with Iran and access to the US financial system.

India received a Significant Reduction Exception (SRE) waiver under CISADA to continue importing Iranian crude until May 2, 2019, when the waiver expired and imports dropped to zero.
Iranian oil accounted for 12.6% of India's total crude imports (~215 million tonnes) in 2016-17; it fell to near-zero after the US waiver expired in 2019.
Between January and July 2025, India imported a crude shipment worth approximately $111 million from Iran — the first resumption in years — reflecting changed circumstances under the war context.
Any Indian company handling Felicity's cargo would risk secondary sanctions designation, cutting it off from US dollar transactions and correspondent banking.

Connection to this news: Felicity's presence at Sikka — a port used by Reliance and BPCL — raises direct questions about secondary sanctions exposure for Indian refiners; the incident illustrates the commercial pressures on India to balance cheap Iranian crude against US sanctions risk.

AIS (Automatic Identification System) and "Dark Shipping"

The Automatic Identification System (AIS) is a mandatory vessel tracking system under SOLAS (Safety of Life at Sea) convention requirements for ships above 300 gross tonnes. AIS transmits a vessel's identity, position, course, and speed to coastal stations and other ships. Deliberately turning off AIS — "going dark" — is a key technique used by sanctions-evading tankers to conceal port calls or cargo transfers.

AIS is mandatory under SOLAS Chapter V (Safety of Navigation) and enforced by the International Maritime Organization (IMO); deliberate AIS deactivation is a red flag under OFAC (US Office of Foreign Assets Control) guidance for sanctions evasion.
"Ship-to-ship transfers" (STS) in international waters while dark are used to transfer sanctioned crude to non-sanctioned vessels — known as "vessel laundering."
The IMO's Resolution A.917(22) requires that AIS not be switched off except to protect the safety or security of the ship.
Satellite-based tracking (using synthetic aperture radar and commercial satellite imagery) now allows authorities to track vessels even when AIS is off.

Connection to this news: Felicity turned off its AIS after departing Sikka — a textbook dark-shipping manoeuvre; the fact that satellite imagery still confirmed its movements illustrates how modern surveillance has eroded the effectiveness of this evasion technique, creating legal exposure for all parties involved in the cargo chain.

Sikka Port and India's Gulf of Kutch Energy Infrastructure

Sikka, located in Jamnagar district of Gujarat, is a deepwater crude handling terminal on the Gulf of Kutch. It is operated by Reliance Industries for its adjacent Jamnagar refinery complex — the world's largest single-location refinery, with a combined refining capacity of approximately 1.24 million barrels per day (MMBPD). Bharat Petroleum Corporation also uses the port for crude deliveries.

Reliance's Jamnagar complex (comprising the Domestic Tariff Area refinery and Special Economic Zone refinery) processes heavy and sour crudes, including Iranian varieties.
India's import dependency for crude is ~81.4%; West Asia accounts for approximately 40% of India's crude imports.
India has strategic petroleum reserves (SPR) at three locations: Vishakhapatnam (1.33 MMT), Mangaluru (1.5 MMT), and Padur (2.5 MMT) — totalling 5.33 million metric tonnes, sufficient for roughly 9-13 days of consumption.
Two additional SPR sites are planned at Chandikhol, Odisha (4 MMT) and an expansion at Padur (2.5 MMT).

Connection to this news: Sikka's role as a key crude intake point for India's largest private refiner makes the Felicity incident directly relevant to India's energy security calculus; the port's infrastructure was built to handle heavy sour crude of the type Iran produces, making Iranian supply commercially attractive despite sanctions risk.

India's Strategic Autonomy and Energy Diplomacy

India's foreign policy doctrine of strategic autonomy — maintaining independent positions not aligned with any major power bloc — is tested most acutely in energy diplomacy. India has historically balanced its relationships with both sanctioning countries (the US) and sanctioned suppliers (Iran, Russia), prioritising energy security and cost considerations.

India continued importing Russian crude post-2022 despite Western sanctions, citing energy security and affordability — a precedent that shaped its approach to Iranian crude.
India's diversification of crude sources expanded from 27 to 41 countries over the past decade, reducing dependence on any single supplier.
The US has simultaneously pressed India to reduce Russian and Iranian crude purchases while offering to increase American energy exports to India.
India's "wait and watch" monetary policy posture (referenced by the RBI Governor in April 2026) reflects a broader whole-of-government stance of keeping options open rather than aligning with US sanctions enforcement.

Connection to this news: The Felicity incident encapsulates the strategic autonomy dilemma — Iranian crude is commercially attractive and Sikka is equipped to handle it, but US secondary sanctions make the transaction legally hazardous; India's non-committal response reflects this calculated ambiguity.

Key Facts & Data

NITC (National Iranian Tanker Company): Under US sanctions since 2012
Indian crude oil import dependency: ~81.4% of domestic requirements
Iranian crude share of India's imports (2016-17 peak): ~12.6%
Iranian crude imports to India after May 2019 waiver expiry: near zero until 2025
Felicity cargo capacity (VLCC class): ~2 million barrels per vessel
India's strategic petroleum reserves total: 5.33 MMT (Vishakhapatnam, Mangaluru, Padur)
US naval blockade active since: April 13, 2026
Jamnagar refinery complex capacity: ~1.24 million barrels per day (world's largest single-location refinery)
AIS dark-shipping detection: now routinely possible via synthetic aperture radar satellite imagery