Eighteen crewmen are feared killed on the INS Sindhurakshak, a diesel-powered and world-class submarine, which exploded and sank shortly early on Wednesday morning at the high-security naval dockyard in Mumbai. "Whilst we hope for the best, we are prepared for the worst," said Naval Chief Admiral DK Joshi. <br />The disaster is thought to be the worst for the Indian navy in over three decades. Defence Minister AK Antony described the sinking as the "greatest tragedy in recent times."
