Bellona's monitoring recorded 50 shadow-fleet oil tankers and 18 shadow-fleet LNG carriers on Russia's Northern Sea Route (NSR) by mid-September 2026 — already exceeding its totals for the whole of 2025, which stood at 38 tankers and 13 LNG carriers. Around three-quarters of all oil tankers observed on the route during the period, and nearly 40 percent of LNG carriers, sailed under sanctions.

The numbers confirm that the NSR's fastest-growing traffic is energy cargo moving from Russian terminals toward Asian buyers. They also confirm that the route is anything but a routine alternative for mainstream container operations. Container traffic remains limited, and ice conditions, vessel capability and access to emergency support continue to determine what can move safely.

Bellona reported that several lower ice-class tankers encountered difficult conditions this season, adding substantial distance and delays to their passages. Visibility is deteriorating as well: the NSR administration no longer publishes incident and accident notices, reducing public insight into events along the route.

Commercial consequences cut across the chain

For charterers, insurers and counterparties, the assessment questions extend well beyond distance and transit time. Vessel condition, ice class, ownership, sanctions exposure, insurance cover and the ability to respond to an incident all shape whether a voyage is commercially viable — and whether it can be insured at all.

The market pressure is set to intensify. Russian oil and LNG shipments are increasingly aimed at Asian buyers, and the EU's full prohibition on Russian LNG imports from the beginning of 2027 forces exporters to reassess future markets and routing options. That shift will keep sanctioned tonnage concentrated on Asia-facing corridors, with the NSR as a primary artery.

Greenland pact changes the western Arctic picture

A separate development on 22 September added a security dimension to North Atlantic planning. Greenland, Denmark and the United States signed an agreement updating their longstanding defence arrangements. It allows the United States to modernise and expand activities at Pituffik Space Base and identifies Narsarsuaq and Mestersvig as locations for additional defence areas.

The details of those defence areas still require mutual agreement, and the wider agreement enters into force after the necessary parliamentary procedures. The text also provides for US military movement between defence areas, aircraft access, and undersea movement by US public vessels in Greenland's territorial waters. It supports stronger NATO planning, presence, exercises and intelligence gathering in the Arctic.

For shipping, Greenland's position matters through the Denmark Strait, the Greenland–Iceland–United Kingdom (GIUK) gap and the approaches to the North Atlantic. Greater surveillance and military activity may improve awareness of vessel movements in these waters. The agreement does not, by itself, establish new commercial navigation restrictions, nor does it mean vessels on Russia's NSR will be monitored or intercepted from Greenland. Still, it signals a longer-term change in allied posture in the region, with the scale and timing of new activity dependent on implementation.

What operators should watch

The immediate task is to assess each voyage on its own route and evidence. Operators planning Arctic or North Atlantic passages should check vessel ice capability, condition, insurance and emergency response arrangements against the intended route and season. They should screen vessels, owners, managers, cargoes and counterparties for sanctions exposure, including changes that arise during a voyage.

Monitoring obligations extend to physical conditions: ice information, navigational warnings and any future notices affecting approaches to Greenlandic facilities. Operators should also allow for changes in surveillance, exercises or local operating arrangements as the Greenland agreement is implemented, and treat gaps in incident reporting or vessel documentation as a trigger for closer review.

The NSR's expanding energy traffic and Greenland's evolving defence posture are separate developments. Together they point to the same conclusion: Arctic voyage planning now depends on a clear view of physical conditions, vessel suitability, sanctions exposure and security activity from origin to destination. With the EU's Russian LNG ban taking effect in 2027 and allied presence in the North Atlantic set to deepen, both the commercial and security variables in Arctic routing will keep tightening.