The secret undersea weapon( ATV ???)

Located up the winding shipping channel in Visakhapatnam harbour is a secret, completely enclosed facility known only as the Shipbuilding Centre (SBC).

Inside this dry dock, nearly 50m below ground level, is a cylindrical black shape, which is as tall as a two-storey building and at 104 m in length, is longer than the Qutub Minar lying on its side.

Technicians working on it confess to a surge of national pride: India’s first nuclear-powered ballistic missile submarine or SSBN is arguably its greatest engineering project.

For over a quarter of a century, the Advanced Technology Vessel (ATV), smaller than the USS Alabama from Crimson Tide, has been among the most highly-classified government programmes, if not the most delayed.

Officials still refuse to confirm the existence of the project or the sea-based ballistic missile. A decade after India came out of the nuclear closet in the sands of Pokhran, it has moved some tantalising steps closer to realising the third and possibly the toughest of the three legs of the triad enunciated in its nuclear doctrine: a sea-based deterrent or a secure underwater platform for launching nuclear weapons.

“Things are developing as per schedule,” Defence Minister A.K. Antony recently said of ATV. Early last month, Chief of the Naval Staff Admiral Sureesh Mehta was the first government official to not only confirm its existence but also lay down a timeframe: “It is a DRDO project and a technology demonstrator. It is somewhere near completion and will be in the water in two years.”

The admiral had reason to feel confident about the project. Just last month, an 80MW nuclear reactor, smaller than a bus, was pushed into the hull of the submarine and successfully integrated—a milestone in the project approved by the then prime minister Indira Gandhi in 1970.

By April 2009, the submarine will be launched and will begin sea trials before it is inducted into the navy. The goal is to field a fleet of three SSBNs by 2015, one in reserve and two on patrol, each carrying 12 nucleartipped ballistic missiles.

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Possibly the last “gift” to India from the now-extinct Soviet Union, it was designed with Russian assistance in the late ’80s. Based on an entirely new design, the 6,000 tonne submarine (not the elderly Charlie class N-sub as thought earlier) will make India the world’s sixth nation to operate a “boomer”.

Part of the acceleration in the programme has to do with the rapid buildup of Chinese nuclear forces. China operates 10 nuclear submarines, and in the past year, has fielded as many as three new Jin-class SSBNs, each carrying 12 submarine-launched ballistic missiles (SLBM). “Given the growing military asymmetry with China, India’s need for a reliable nuclear deterrent that can survive a first strike has never been greater,” says strategic expert Brahma Chellaney.

ATV is in line with India’s nuclear doctrine enunciated in 1999, which calls for its nuclear forces to be effective, enduring, diverse, flexible and responsive to the requirements in accordance with the concept of credible minimum deterrence. The doctrine calls for high survivability against surprise attacks and for a rapid punitive response.

A nuclear submarine that can remain submerged almost indefinitely and cannot be detected underwater, therefore, meets all these criteria and offers an almost invulnerable launch platform for nuclear weapons.

For a country like India with a no-first use policy, it is vital because it prevents a potential adversary from launching a crippling first strike that can knock out all nuclear weapons (see box). It also allows India to inflict considerable damage to the aggressor.

“One submarine carries at least 12 missiles with Multiple Independently Targetable Reentry Vehicles, which could mean as many as 96 warheads. When such a submarine goes out to the sea, that many missiles are removed from our own territory. The enemy’s targeting of that many sites gets neutralised,” says Rear Admiral (retired) Raja Menon.
ATV, with its suitably muted acronym, was a euphemism for a longdelayed project. Shrouded in obsessive secrecy for decades, it has been under the direct supervision of the prime minister, who also chairs ATV’s apex committee.