While Western countries have banned most Russian oil imports, there aren’t any rules preventing Western ships from delivering to buyers such as China and India, or from providing services such as insurance — so long as the G7 price caps are respected. Ships with European owners accounted for 36% of Russian crude trade in January, according to Kpler.

But the legal and reputational risks of failing to comply with the price caps loom large. At the same time, Russia is eager to stop working with Western shippers. That has led to the development of a new cohort, whose makeup is murkier — and history more checkered.

“The dark fleet that has been around carrying Venezuelan and Iranian oil globally is something we all expected to grow, and it has,” said Janiv Shah, senior analyst at Rystad Energy, a consultancy.

One reason: Sending Russian oil on longer trips to China or India is less efficient than shipping it to nearby countries such as Finland. Russia now needs four times as much shipping capacity for its crude as it did before the invasion, according to EA Gibson.

As a result, an estimated 25 to 35 vessels are being sold per month into the shadow fleet, according to another senior executive at an oil trading firm. Global Witness, a nonprofit, estimates that a quarter of oil tanker sales between late February 2022 and January this year involved unknown buyers, roughly double the proportion the previous year.

Demand could increase in the coming months if China needs more fuel to power its economic recovery.

Questions and risks

If a greater percentage of the global fleet is being used for Russian crude and petroleum products, that eats up capacity, raising costs for all oil traders.

“There’s been a massive increase in inefficiencies in the way the tanker market operates,” said Wright of Kpler.

There are also questions about who ultimately runs the shadow fleet. Some suspect a portion of the shell companies that have cropped up have ties to “the Russian state or certain politically connected players,” according to Sergey Vakulenko, a former executive at a Russian oil company, now nonresident scholar at the Carnegie Endowment for International Peace.

This past weekend, the European Union imposed sanctions on Sun Ship Management, a subsidiary of Sovcomflot, Russia’s largest shipping company. The EU said the Dubai-based firm, registered a decade ago, had been “operating as one of the key companies managing and operating the maritime transport of Russian oil,” and that the “Russian Federation is the ultimate beneficiary” of its business operations.

Moreover, experts have said the shadow fleet may be easing Russia’s ability to dodge sanctions or sell its oil above the price cap. It’s also making it harder to discern exactly how much Russia’s barrels are selling for. Experts including Vakulenko have found evidence in customs data that Urals, the country’s benchmark, is selling for much more at key ports than official prices indicate.

Safety is also a worry. The dark fleet is believed to have a large contingent of vessels older than 15 years, the age at which mainstream oil companies would typically retire them due to wear and tear. Now, more of these boats are making trips across the globe.

“You’ve got all these old vessels that are probably not being maintained to the standard they should be,” said Matthews of EA Gibson. “The likelihood of there being a major spill or accident is growing by the day as this fleet grows.”

Source: Edition.cnn.com