Used by 1960 Type 12 Rothesay class frigate FF 21963 Provider class support ship AO 21965 OL class support ship AO 21973 Type 82 Bristol class guided-missile destroyer DDG 21974 Type 21 Amazon class frigate FF 21977 Hercules class guided-missile destroyer DDG 21978 Fort I class (1978) support ship AO 2 In Service Royal Navy Royal New Zealand Navy Canadian Armed Forces Royal Fleet Auxiliary Pakistan Navy Argentine Navy Egyptian Navy