India conducted its first ‘peaceful’ nuclear test explosion, dubbing the operation ‘Smiling Buddha.’ But Buddha himself would at best have smiled sardonically at seeing his name tied to such an experiment.
After the test, India vowed never to weaponise its nuclear assets, a pledge that seems to have gone unheeded.
A decade later, the country again set out to test its nuclear capabilities in the Operation Shakti tests - five nuclear tests conducted over three days. Pakistan soon followed suit. It has long been clear that India intended to go back on its non-nuclear weapon pledge. Indeed, an early indication was the commencement of the construction of a nuclear submarine after the 1974 nuclear test. Nuclear drills, meanwhile, were reportedly being taught to every Indian naval officer as early as the 1950s by officials from the Bharat Atomic Energy Centre (BARC) in Mumbai, where India converts fissile material into nuclear weapon cores.
In 1976, Dr Homi Nusserwanji Sethna, the chairman of the Indian Atomic Energy Commission at the time, created the Diesel Propulsion Research Team (DPRT), an apparent subterfuge for designing a nuclear propulsion plant for India’s first nuclear submarine. A team of four naval officers led by Indian Navy Capt. PN Agarwala and Capt. Bharat Bhusan were inducted into the DPRT.
Many Indian Naval officers at the time were also trained in nuclear engineering at the Bhabha Atomic Research Centre (BARC) and subsequently transferred to the Defence Research and Development Organisation’s classified nuclear submarine project, which was called the Advance Technology Vehicle (ATV).


















