ɪnðə pˈiəɹɪəd fɹʌm wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti tə wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti fˈaɪv ðə bˈoːɹd ʌv ˈædmɚɹəlɾi wɜː sˈɪɹiəsli kənsˈɜːnd æt ðə spˈiːd wɪð wˌɪtʃ fɹˈæns wʌz pɹədˈuːsɪŋ ˈaɪɚŋklæd wˈɔːɹʃɪps.
In the period from 1860 to 1865 the Board of Admiralty were seriously concerned at the speed with which France was producing ironclad warships.