India's nuclear triad -- a matrix of weapons delivery systems from land, air and sub-sea -- will be complete with the commissioning of India's first SSBN, Arihant in 2011-2012. In a significant comment at his annual press conference today in New Delhi, Indian Navy chief Admiral Nirmal Verma categorically stated that when the Arihant is put to see in two years, it will be on deterrent patrol with strategic weapons on board.