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Oil Tankers Idle Off Chabahar as US Blockade Tightens Iran Trade

Tanker clusters near Chabahar, Iran, indicate continued loading activity despite sanctions, with US actions including intercepts and sanctions. Counts of idle supertankers rise while global oil in transit/storage remains high and Hormuz traffic falls near zero.

Why It Matters

The measures suggest sanctions are constraining Iran’s crude exports and could pressure Tehran to curb production; ripple effects may affect global oil supply and pricing.

Timeline

7 Events

Iran appears to bring older vessels back into service

April 28, 2026

The report notes that Iran seems to be bringing older vessels back into service to load crude.

US sanctions and tanker boarding continue

April 28, 2026

The United States has been increasing pressure by boarding tankers in the Indian Ocean and sanctioning a major Chinese refiner it said was a purchaser of Iranian oil.

About 155 million barrels Iranian crude in transit or storage

April 28, 2026

Vortexa Ltd estimates roughly 155 million barrels of Iranian crude are either in transit or floating storage worldwide.

Strait of Hormuz traffic near-zero

April 28, 2026

Traffic through the Strait of Hormuz is described as near-zero, reflecting the impact of the blockades on crude shipments.

Tankers idling near Chabahar in late-week buildup

April 27, 2026

Satellite images and analyses indicate around six to eight supertankers idling in waters near Chabahar, with more smaller tankers nearby, in what the report describes as a late-week buildup.

Nasha VLCC begins signaling from the Persian Gulf

April 24, 2026

A 30-year-old VLCC named Nasha began signaling from the Persian Gulf after last delivering a cargo three years ago; tracking data show it last broadcast its location four days earlier, heading toward Kharg Island.

US Navy intercepts two VLCCs and redirects them

April 24, 2026

The United States Navy said it redirected two very large crude carriers that it intercepted last week, in the area where the Chabahar tanker activity is occurring.