ɚɹˈɪdʒɪnəli dɪzˈaɪnd wɪð θɹˈiː mˈæsts, nɔːɹθˈʌmbɚlənd wʌz fˈɪɾᵻd wɪð fˈaɪv mˈæsts ʌntˈɪl hɜː wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɛvənti fˈaɪv sˈɛvənti nˈaɪn ɹˈiːfɪt wɛn tˈuː wɜː ɹᵻmˈuːvd ænd ʃiː wʌz ɹˌiːɹˈɪɡd æz ɐ bˈɑːɹk.
Originally designed with three masts, Northumberland was fitted with five masts until her 1875–79 refit when two were removed and she was re-rigged as a barque.