The first photo shows an Olwen-class ship.
The Ol-class ships were:
• RFA Olwen (A122): Launched in 1964 as RFA Olynthus, renamed Olwen in 1967, and decommissioned in 1999.
• RFA Olna (A123): Commissioned on 1 April 1966.
• RFA Olmeda (A124): Commissioned on 18 October 1965.
The second photo shows the
RFA Gold Rover.
The third photo shows RFA Fort George.
For data and description, see the link at the end.
https://share.google/bapw9n1M2pMrgUwJw
RFA Gold Rover - Wikipedia
https://share.google/qo4HVCelOUmcNLZuf
RFA Fort George - Wikipedia
https://share.google/JR6UEag6Qjhn3OTgq