ðeɪ wɜː pˈaʊɚd baɪ tˈuː pˈɑːɹsənz ɡˈɪɹd stˈiːm tˈɜːbaɪnz, ˈiːtʃ dɹˈaɪvɪŋ wˈʌn pɹəpˈɛlɚ ʃˈæft, jˈuːzɪŋ stˈiːm pɹəvˈaɪdᵻd baɪ tˈuː ˈædmɚɹəlɾi θɹˈiːdɹˈʌm bˈɔɪlɚz.
They were powered by two Parsons geared steam turbines, each driving one propeller shaft, using steam provided by two Admiralty three-drum boilers.