How the Skiros Attack Disrupted Black Sea Oil Shipping

The attack on the Greek-linked tanker Skiros marked a significant escalation in the commercial risk surrounding Russian-origin oil exports from the Black Sea. After loading at the Caspian Pipeline Consortium (CPC) terminal near Novorossiysk on August 16, the Suezmax tanker was struck by a Ukrainian drone near its bridge, according to reporting cited by multiple outlets. Skiros can carry roughly 1 million barrels of oil. Public reports said there were no crew injuries and no petroleum leak.

The immediate damage to one vessel was only part of the story. The incident showed that the campaign around Novorossiysk was affecting large, conventional tankers with Western-linked ownership or management connections, widening the risk beyond vessels commonly associated with Russia’s shadow fleet.

What happened to Skiros?

Skiros had loaded Russian-origin crude at the CPC terminal, an export facility near Novorossiysk that also handles Kazakh oil. The tanker was attacked after leaving or operating near the terminal on August 16. Video and early reports described a strike on the vessel’s bridge area, although details of the damage remained limited in public reporting.

The attack was especially consequential because it occurred close to a major oil-export hub rather than on an isolated voyage. It also involved a Suezmax-class tanker, a large conventional vessel capable of carrying about 1 million barrels. That made the incident a direct warning to shipowners and charterers involved in mainstream Black Sea oil movements.

Why the Bourda comparison matters

The incident was reported as the second attack involving an IMS-associated tanker. The earlier case was Bourda, a Greek-owned, Liberian-flagged Aframax tanker struck by Ukrainian sea drones near Taman on August 1 while reportedly sailing to load Russian oil. Windward described Bourda as one of the first confirmed strikes on a vessel outside Russia’s shadow fleet.

Taken together, the Bourda and Skiros incidents suggested that commercial links to Western shipping were not enough to remove the danger created by Russian oil trades. A tanker’s flag, ownership, manager, charterer, cargo, route, and proximity to a targeted port could all affect its exposure.

That does not establish that every Western-linked ship is being deliberately targeted. But it does show that the operational boundary between “shadow fleet” risk and conventional commercial risk had become less dependable around Russian Black Sea terminals.

Novorossiysk oil exports were disrupted, not permanently stopped

The attacks formed part of a wider pattern of strikes on ships and port infrastructure around Novorossiysk. Ukrainian drone attacks had already forced temporary suspensions at the CPC terminal and at Russia’s Sheskharis oil facility, which handles roughly 700,000 barrels per day.

The disruption was material but intermittent. Novorossiysk resumed oil loadings on August 17, with a Suezmax tanker loading Kazakh KEBCO crude and another KEBCO cargo expected to follow. The port also handles Russian Urals and Siberian Light grades.

That sequence matters: the campaign imposed delays, shutdowns, rerouting, and additional risk rather than creating a permanent blockade. Export infrastructure could reopen, but each interruption increased uncertainty for cargo owners, terminals, ship operators, and buyers.

Turkey’s Russian-port imports fell sharply

The clearest downstream effect appeared in Turkey’s seaborne crude supply. Turkey received about 900,000 tonnes of oil from Russian ports in July, down from roughly 1.2 million tonnes in June. Black Sea deliveries fell by half month on month, to just over 300,000 tonnes from about 600,000 tonnes.

August volumes were expected to decline further, to around 200,000 tonnes from Russian Black Sea ports. The disruption affected the grades Turkey commonly buys through the route, including CPC Blend, Kazakh KEBCO, and Russian Urals.

The figures do not mean that all Russian-origin oil disappeared from the Turkish market. They indicate that attacks and terminal interruptions were changing the reliability and cost of the route. Buyers could respond by delaying purchases, drawing on other inventories, changing grades, or seeking crude from alternative suppliers.

A wider safety problem for commercial shipping

Skiros also landed amid growing concern about the safety of civilian vessels operating near the Russian Black Sea coast. Greece advised Greek-flagged commercial ships to strengthen security measures after earlier attacks on tankers at or near the CPC terminal.

Turkey separately called on Russia and Ukraine to protect navigation after the Turkish-owned Ro-Ro vessel Nadezhda was struck near Novorossiysk. Three crew members were seriously injured, and the vessel’s crew was evacuated.

The Nadezhda incident broadened the issue beyond oil tankers. Cargo ships, Ro-Ro vessels, grain carriers, and other commercial traffic could face danger simply by operating near a port or route affected by the campaign. That increases the likelihood of tighter security procedures, voyage delays, route changes, and more cautious port-call decisions.

Insurance and freight costs add another layer of pressure

A vessel can remain afloat and still become commercially expensive to operate. Reports from the tanker market said owners were adding risk premiums to Black Sea freight rates after repeated attacks.

War-risk insurance had also risen sharply after previous tanker attacks, with premiums for Black Sea port calls reported at around 1% of a vessel’s value, compared with roughly 0.6% to 0.8% previously.

Nordic American Tankers said one of its vessels had been attacked but reached safety, with the crew unharmed and the vessel suffering only minor damage.

These costs can affect the entire chain: shipowners may demand higher freight rates, insurers may reprice voyages, charterers may look for substitute tonnage, and cargo buyers may pay more for a dependable delivery. The result is a smaller and more expensive pool of vessels willing to call at exposed Black Sea terminals.

What the Skiros incident indicates

The Skiros attack did not by itself stop Russian oil exports. Its significance was cumulative. Alongside strikes on other tankers and temporary terminal closures, it demonstrated how a drone campaign can impose economic pressure without shutting a route permanently.

The effects are transmitted through several channels:

• Terminal disruption: loadings can be suspended while damage and security threats are assessed.
• Tanker scarcity: some owners may avoid exposed Russian Black Sea calls or demand higher compensation.
• Higher operating costs: insurance, freight, security, and delay risks all increase.
• Buyer substitution: Turkish importers have already reduced Russian-port purchases as Black Sea deliveries became less reliable.
• Broader civilian exposure: attacks on commercial vessels have raised concerns for crews and cargoes beyond the oil trade.

The main conclusion is therefore measured but significant: Ukraine’s 2026 drone campaign was making Russian seaborne exports more difficult and costly, while shifting risk onto shipowners, crews, insurers, traders, importers, and port operators. The resumption of loadings showed that the route remained open; the attack on Skiros showed that using it had become substantially more dangerous.