Used by 0 River (Batch 2) class corvette FS 12012 Amazonas class corvette FS 12019 Adulyade class guided-missile frigate FFG 2 Refits 2009-jan HMS Montrose F236 Frigate Type 23 Duke class Added DS30M Mark 2 30mm Gun and was 1st Type 23 to have upgraded DNA 2 Combat Management System installed. In Service Royal Navy Brazilian Navy Royal Thai Navy