History & Modifications
Powerful:
Powerful was used as a training ship at Devonport from 1915. In 1919 she was renamed Impregnable II.
She was sold for scrapping in 1929.
Terrible:
Terrible was used as a troop ship in 1915. From 1916 she was used as an accomodation ship until 1920
when she was renamed Fisgard III and converted to a training ship. She was sold for scrapping in
1932.