Northern Sea Route (NSR)

The Northern Sea Route (NSR) is a shipping lane along Russia's Arctic coast. It connects the Atlantic side of Europe to the Pacific side of Asia by sailing across the top of Russia, through icy Arctic seas. For ships going between northern Europe and East Asia, it can be about 40% shorter than the usual route through the Suez Canal.

But it is frozen for much of the year, so it is usable mainly in summer and autumn, often with the help of icebreakers (special ships that break sea ice).

Why does it matter?

Distance is money in shipping. A shorter route means less fuel, less time and lower cost. Today, most Europe-Asia trade goes through two narrow and risky points: the Suez Canal and the Bab-el-Mandeb Strait near Yemen. When these face attacks or blockages, ships must take the much longer route around Africa's Cape of Good Hope. The NSR offers a third option. It also lets Russia ship oil and liquefied natural gas (LNG) from its Arctic fields directly to Asia.

Where exactly is it?

Under Russian law, the NSR runs from the Kara Gate (near the island of Novaya Zemlya, at the boundary between the Barents and Kara Seas) in the west to the Bering Strait (Cape Dezhnev) in the east. It passes through four Arctic seas, from west to east:

1. Kara Sea
2. Laptev Sea
3. East Siberian Sea
4. Chukchi Sea

The Barents Sea, where the ice-free port of Murmansk lies, is just west of the official route. Murmansk stays ice-free in winter thanks to the warm North Atlantic Drift (an extension of the Gulf Stream). The whole route lies within Russia's Exclusive Economic Zone (EEZ). Important straits on it include the Vilkitsky Strait, near the northernmost point of the Asian mainland.

How much shorter is it?

Approximate distances in nautical miles:

• Shanghai to Hamburg: about 10,800 via Suez; about 7,300 via the NSR
• Busan to Rotterdam: about 11,000 via Suez; about 7,500 via the NSR
• Yokohama to Murmansk: about 12,840 via Suez; about 5,770 via the NSR

The saving is biggest for ports in north-east Asia (China, Japan, Korea). For India, which lies far to the south, the NSR saves less distance; its value is more about reaching Russia's Arctic and Far East.

Where did it come from?

People searched for a "Northeast Passage" across the top of Eurasia for centuries.

• 1878-79: Swedish explorer Adolf Erik Nordenskiöld, on the ship Vega, made the first full voyage along the route, but had to spend one winter stuck in ice.
• 1932: A Soviet expedition led by Otto Schmidt, on the icebreaker Alexander Sibiryakov, crossed it for the first time in a single season. The Soviet Union then set up a special agency to develop the route and opened it as a managed shipping lane in the 1930s.
• 1991 onwards: After the Soviet Union broke up, traffic fell sharply. It began to grow again in the 2010s as Arctic ice melted and Russia built new LNG and oil projects, such as Yamal LNG.
• 2012: Russia passed a federal law on the NSR that requires ships to get permission to sail in NSR waters.
• 2018: Rosatom, Russia's state nuclear company, was made the main infrastructure operator of the route. In 2022, more powers to manage navigation were given to Rosatom.

How does shipping on the NSR work?

1. A ship applies to the Russian authority for a permit, giving details of the vessel and its ice class (how strong its hull is against ice).
2. Depending on ice conditions and the ship's ice class, Russia may require icebreaker escort and an ice pilot, for which fees are charged.
3. Russia's fleet of nuclear-powered icebreakers, run by Rosatom's Atomflot, clears paths through ice. Russia is the only country with nuclear-powered surface icebreakers.
4. The main sailing season is roughly July to November, when ice is thinnest. Some eastern sections are open for only a few months, and conditions change from year to year.

What are the key numbers?

Cargo on the NSR rose from about 19.7 million tonnes in 2018 to a record of about 37.9 million tonnes in 2024, and about 37 million tonnes in 2025. Russia had set a target of 80 million tonnes, which is still far away. Most cargo is Russian LNG, oil, coal and metals, not international transit trade.

What does international law say?

The UN Convention on the Law of the Sea (UNCLOS) has a special rule, Article 234, for ice-covered areas. It lets coastal countries make and enforce stricter rules to prevent pollution from ships in their EEZ where ice makes navigation dangerous. Russia (and Canada for its Northwest Passage) relies on Article 234 to require permits.

Countries like the United States argue that Article 234 only allows pollution rules and does not give Russia the right to control all navigation, and that certain straits are international waters where free passage is allowed.

India's position and interests

• Arctic Council: India has been an observer in the Arctic Council since 2013.
• Himadri: India's Arctic research station at Ny-Ålesund, in Svalbard (Norway), set up in 2008.
• India's Arctic Policy: Released in March 2022 with the title "India and the Arctic: building a partnership for sustainable development". It has six pillars: science and research, climate and environment protection, economic and human development, transportation and connectivity, governance and international cooperation, and national capacity building.
• India-Russia cooperation: In July 2024, India and Russia agreed to set up a working group on the Northern Sea Route. Its first meeting was held in October 2024, covering cargo transit targets, Arctic shipbuilding and training Indian seafarers for polar waters. India is interested because the NSR, along with the Chennai-Vladivostok (Eastern) Maritime Corridor, could help secure energy supplies from Russia's Arctic and Far East.

Commonly confused concepts

• Northern Sea Route vs Northwest Passage: The NSR runs along Russia's Arctic coast. The Northwest Passage runs through Canada's Arctic islands, linking the Atlantic and Pacific along North America.
• Northern Sea Route vs Northeast Passage: The Northeast Passage is the full route from the Atlantic to the Pacific along Eurasia's north, including the Barents Sea. The NSR is the legally defined Russian section from the Kara Gate to the Bering Strait.
• NSR vs Transpolar Sea Route: The Transpolar Route would go straight across the middle of the Arctic Ocean near the North Pole. It is not usable today because of thick ice, but may open if ice keeps melting.
• Bering Strait vs Barents Sea: The Bering Strait separates Russia (Asia) from Alaska (USA) and joins the Arctic Ocean to the Pacific. The Barents Sea lies north of Norway and western Russia.
• NSR vs INSTC: The International North-South Transport Corridor (INSTC) is a land and sea route from India through Iran to Russia. The NSR is a sea route across the Arctic.

Issues, criticism and the way forward

• Climate change angle: The route is becoming more usable because Arctic ice is melting fast. This is an economic opportunity but also a sign of serious global warming. More shipping can cause oil spills, black carbon (soot) on ice, and harm to Arctic wildlife and Indigenous communities.
• Short season and high risk: Ice, fog, few ports, little search-and-rescue support and costly insurance limit the route. Ships need special ice-class hulls.
• Russian control and sanctions: Since Russia controls permits and icebreakers, many Western shipping firms avoid the route, especially after sanctions linked to the war in Ukraine. Some see it as a strategic tool for Russia and China (which calls it part of a "Polar Silk Road").
• Legal disputes: The debate over Article 234 and the status of straits remains unresolved.
• For India: Gains include diverse energy sources and a role in a new trade route. Concerns include dependence on one partner, sanctions risks and environmental costs. Experts suggest India build polar shipping skills, ice-class ships and scientific capacity, and act through its Arctic Policy and the Arctic Council.

Concepts to Know

• Icebreaker: A ship with a strong, specially shaped hull and powerful engines that can break through sea ice to open a path for other ships.
• Ice class: A rating that shows how strong a ship's hull and engines are for sailing in ice.
• Nautical mile: A unit of distance used at sea, equal to about 1.852 km.
• Exclusive Economic Zone (EEZ): The sea area up to 200 nautical miles from a country's coast, where it has special rights over resources like fish, oil and gas.
• Liquefied Natural Gas (LNG): Natural gas cooled to about minus 162°C so it becomes liquid and can be carried in ships.
• Chokepoint: A narrow sea passage that a large share of world trade must pass through, so any blockage there disrupts global shipping.