Tag Archives: INS Arihant nuclear submarine India

Owning Nuclear Submarines: the Benefits

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President Trump has given approval  in October 2025 for South Korea to build a nuclear-powered submarine in the U.S., granting Seoul a coveted piece of hardware that could rattle China and North Korea—and potentially spark a race by its Asian neighbors to acquire similar technology. The stealthy submarine—which is difficult to detect because it can stay underwater…

It often takes the U.S. more than five years, if not much longer, to make one…Trump said the submarine will be made at a shipyard in Philadelphia owned by a South Korean firm, Hanwha Ocean, which purchased the facility in 2024. Hanwha makes large naval submarines in South Korea, but this would be its first nuclear-powered sub….

The U.S. maintains considerable military dominance underwater across the Indo-Pacific due to its nuclear-powered subs. With roughly 70 of them, the U.S.’s nuclear-submarine fleet outnumbers China by more than five to one…. But China is rapidly catching up, aided by diesel-powered submarines that are quieter, travel faster and can carry advanced weapons.

Excerpt from Timothy W. Martin, As China Raises Pressure, U.S. to Support Seoul in Building Nuclear-Powered Sub, WSJ

Nuclear Operators: Who Helps India and Pakistian with their Atomic Bombs

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Using open-source data, the nonprofit Centre For Advance Defense Studies (C4ADS) report published in April 2020 provides one of the most comprehensive overviews of networks supplying the rivals, in a region regarded as one of the world’s most dangerous nuclear flashpoints.

To identify companies involved, C4ADS analysed more than 125 million records of public trade and tender data and documents, and then checked them against already-identified entities listed by export control authorities in the United States and Japan. Pakistan, which is subject to strict international export controls on its programme, has 113 suspected foreign suppliers listed by the United States and Japan. But the C4ADS report found an additional 46, many in shipment hubs like Hong Kong, Singapore and the United Arab Emirates. The father of Pakistan’s atomic bomb, AQ Khan, admitted in 2004 to selling nuclear technology to North Korea, Iran and Libya. He was pardoned a day later by Pakistani authorities, which have refused requests from international investigators to question him.

India has a waiver that allows it to buy nuclear technology from international markets. The Indian government allows inspections of some nuclear facilities by the International Atomic Energy Agency, but not all of them. C4ADS identified 222 companies that did business with the nuclear facilities in India that had no IAEA oversight. Of these, 86 companies did business with more than one such nuclear facility in India.

Both countries are estimated to have around 150 useable nuclear warheads apiece, according to the Federation of American Scientists, a nonprofit group tracking stockpiles of nuclear weapons.

Excerpts from Alasdair Pal, Exclusive: India, Pakistan nuclear procurement networks larger than thought, study shows, Reuters, Apr. 30, 2020

How to Hide Nuclear Bombs in the Ocean: Nuclear Submarines

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The INS Arihant’s India’s nuclear submarine inaugural voyage in November 2018 was a triumphal step forward in India’s long, often tortuous quest to deploy atomic weapons at sea…  Hiding missiles in the ocean solves these problems, giving India more confidence that its forces could survive a nuclear attack from China or Pakistan, and hit back.But managing such weapons is not easy. One difficulty is ensuring that a submarine can receive orders without giving away its location. India has been building low-frequency radio stations, which use large antennas to propel signals underwater, for this purpose. Yet these are also vulnerable to attack, which is why some nuclear-armed states use airborne transmitters as well.

A second hitch is that the k-15 missiles aboard the Arihant can only fly a puny 750km, which means that the submarine would have to park itself dangerously close to China’s coastline to have a hope of striking big cities. Longer-range missiles, which could be fired from the safety of Indian waters, are in the works. But bigger missiles, and more of them, necessitate a bigger hull. That, in turn, requires that the nuclear-powered subs be fitted with bigger reactors—a fiendish technical challenge.

A third problem is keeping the Arihant safe. Nuclear submarines can only do their job if they can slip silently out of port and into the oceans. They are typically chaperoned by leaner attack submarines. But admirals complain that the navy, whose share of the defence budget has dwindled to 15%, has just 13 of these. The delivery of new French attack subs has been delayed.

Meanwhile India’s nuclear arsenal is swelling. A recent report by the Bulletin of the Atomic Scientists, a research organisation, estimates that it has 130-140 nuclear warheads, with enough fissile material for 60-70 more. The stockpile, though smaller than Pakistan’s and half the size of China’s, has roughly doubled since 2010. Many of the new warheads will go to sea. A second nuclear submarine, the Arighant, is nearing completion, and a third is in the works.

India’s Nuclear Submarines, Economist,  Nov. 17, 2018, at 44

Fixing the Holes of Nuclear Security

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The Trump administration’s decision to withdraw from the Intermediate-Range Nuclear Forces (INF) Treaty…is the most recent upset in a series of escalating tensions between the two superpowers. ..

Today, a new framework is needed to tackle risks posed by nuclear material in transit, to track small quantities of fissile material used in testing equipment, and to address the approximately 150 metric tons of weapons-grade uranium fuel designated for use in naval propulsion.  Nuclear material security in the naval sector represents an increasingly salient issue for all states—particularly as a number of governments announce plans to develop nuclear navies or face pressure to do so. Tony Abbott, a former prime minister of Australia, argues that a nuclear naval program is necessary to address the future security challenges in his country’s part of the world. South Korea has a similarly renewed interest in a nuclear navy. In the Middle East, Iran is purported to be planning a reactor for nuclear propulsion and in South America, Brazil has had an active program to develop nuclear-powered attack submarines for more than a decade. Beyond the planning phase, India recently commissioned its first nuclear submarine, the INS Arihant, using a Russian design…

There are a number of potential institutional configurations for plugging the holes in the nuclear security system. One approach might involve further bolstering the cooperative measures included in the Convention on the Physical Protection of Nuclear Material—the only legally binding document that outlines government obligations to protect nuclear facilities and nuclear material in transit. Another proposal calls for a so-called Supplemental Protocol within an IAEA-supported and state-sponsored committee process. The benefit of both of these approaches is that their implementation would use the IAEA’s institutional framework (relying on expertise and legal precedence emanating from the existing safeguards regime) rather than starting from scratch. A third approach may involve using the Global Initiative to Combat Nuclear Terrorism as a diplomatic vehicle to pioneer an international materials accountancy system similar to those that national governments use to keep track of their fissile material.

Excerpts from Andrew W. Reddie, Bethany L. Goldblum, Why the security of nuclear materials should be focus of US-Russia nuclear relations, Bulletin of Atomic Scientists, Nov. 13, 2018