ɐ dˈʌzən jˈæɹoʊ wˈɔːɾɚtˈuːb bˈɔɪlɚz pɹəvˈaɪdᵻd stˈiːm tə ðɪ ˈɛndʒɪnz wˌɪtʃ pɹədˈuːst ɐ tˈoʊɾəl ʌvwˈɪtʃ wʌz ɪntˈɛndᵻd tʊ ɐlˈaʊ ðˌɛm tə ɹˈiːtʃ ɐ spˈiːd ʌv .
A dozen Yarrow water-tube boilers provided steam to the engines which produced a total of  which was intended to allow them to reach a speed of .