New Delhi, March 09 (ANI): Defence Expert Bharat Verma on Sunday said that naval accidents are happening due to defects in equipment manufacturing and that Defence Minister AK Antony was just passing his time and doing nothing about the issue. A civilian worker was killed and two were injured in an accident at the under-construction nuclear submarine at the shipbuilding centre of Eastern Naval Command (ENC) in Visakhapatnam on Saturday evening. On Friday a Navy officer was killed in an accident on the yet to be commissioned Kolkata class destroyer that is currently undergoing trials in Mumbai after a malfunction in its fire fighting system. Two weeks ago, two officers were killed in a fire aboard a Navy submarine INS Sindhuratna, which had been refitted and was being sea tested.