"BNS Nirbhoy" . "Decommissioned" . "2022-01-19" . . "58.77" . . . . . "BNS Nirbhoy" . "BNS ''Nirbhoy''" . "1985-12-01" . . "BNS Nirbhoy" . . . "Hainan class" . "7.2" . .