An email was the first clue that something wasn’t right. Somewhere off the coast of Singapore, a crew member sat down at a screen and typed out a complaint that would eventually end up on desks in Washington, London, and Mumbai. He was aboard a ship known as the Beeta. In actuality, it was the Gale, a tanker that the US had already placed on a blacklist. He was unpaid. There wasn’t much food left. In the midst of all of this, he made the risky and uncomfortable decision to be honest.
That one email encapsulates, in miniature, the true appearance of the so-called dark fleet. It’s not a glitzy smuggling business. Not a ring of dark financiers from Hollywood. Just weary men transporting oil that shouldn’t be on the open market on rusting ships, frequently oblivious to the true owner of the ship beneath their feet.
| Topic Snapshot | Details |
|---|---|
| Subject | The global “dark fleet” or shadow fleet of oil tankers |
| Estimated size | Around 600 to 1,400 vessels, depending on methodology |
| Primary cargo | Sanctioned crude oil from Russia, Iran, and Venezuela |
| Common tactics | AIS manipulation, ship-to-ship transfers, flag hopping, repainted names |
| Governing body | International Maritime Organization, under the United Nations |
| Key year | 2022, when Western sanctions on Russian oil reshaped global shipping |
| Largest customer | China, with India and Turkey also significant buyers |
| Main legal framework | UN Convention on the Law of the Sea (UNCLOS) |
| Insurance gap | Many vessels operate without recognized P&I coverage |
| Notable risk | Aging hulls, untrained crews, environmental disasters |
It is more difficult than you might think to identify the fleet itself. Because the entire purpose of these ships is not to be counted, estimates vary greatly. In late 2024, the Atlantic Council put the figure in the hundreds. By the end of the previous year, CSIS analysts were monitoring what appeared to be a consistent, nearly methodical expansion associated with Russia alone. Iran has a network of its own. Maduro was recently apprehended, but Venezuela is still using the same strategy. Observing the numbers rise gives the impression that no one is certain of the ceiling.
A sort of practiced disappearing act is what these vessels have in common. Every commercial ship is required to broadcast a digital signal called the Automatic Identification System, which is either turned off, faked, or simply rewritten. A tanker arrives in Asia flying a different flag after departing a Russian port. Oil sloshing from one hold to another while satellites search elsewhere occurs during ship-to-ship transfers at sea, far from any port authority. It’s possible that no single agency has a complete picture of any of it.
In 2023, the International Maritime Organization—the UN agency tasked with policing such activities—formally defined dark fleet practices. That sounds important, but keep in mind that definitions are the simple part. Flag states are responsible for enforcement, and they are the exact places where the system breaks down. A few of these are small island nations that offer registration as a service. Others have just stopped posing awkward queries.
All of this has an unsettling irony. The United States, which has spearheaded a large portion of the sanctions framework, has not ratified UNCLOS, the very agreement that would provide it with more legal standing to confront ghost ships at sea. There is support from the Senate. Ratification doesn’t. It is difficult to avoid feeling as though Washington is fighting with one hand tied behind its back when this disparity continues year after year.
In a February Wall Street Journal article, John Bolton proposed resurrecting the 2003 Proliferation Security Initiative, an outdated alliance established to stop the flow of illegal weapons. That might work. Perhaps it doesn’t. For a very long time, sanctions enforcement has been perceived as being both firm in press releases and porous in the water. China continues to purchase. Refineries continue to refine. Somehow, the oil continues to flow.
The crews continue to sail. The majority of them are South Asian, Filipino, and Eastern European, and they work on contracts that might or might not be fulfilled, on ships that might or might not be insured, and transporting goods about which they might or might not be informed the truth. There are thousands of people like the man who sent that email from the Beeta, the Gale, or whatever it’s called this month. His grievance came to light. The majority never do. That is the aspect that persists more than any policy discussion.
