ðə lˈɑːɹdʒɪst ˌɑːɹɹˌɛmˈɛl kˈæɹid ˌɔn ɐ wˈɔːɹʃɪp wʌzðɪ ˈɛlswɪk ˈɔːɹdnəns kˈʌmpəniz sˈɛvəntˌiːn.sˈɛvən ˈɪntʃ fˈoːɹhˈʌndɹɪd fˈɪftiˌɛmˈɛm wˈʌnhˈʌndɹɪd tˈʌn ɡˈʌn ʌvðə wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɛvənti z, fˈoːɹ ʌvwˈɪtʃ wɜːɹ ɪnstˈɔːld ɪn ˈiːtʃ əv ðɪ ɪtˈæliən ˈaɪɚŋklædz ænd lˈɑːntʃt ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɛvənti sˈɪks ænd wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɛvənti ˈeɪt, ɹᵻspˈɛktɪvli.
The largest RML carried on a warship was the Elswick Ordnance Company's 17.7 inch (450-mm) 100 ton gun of the 1870s, four of which were installed in each of the Italian ironclads  and  (launched in 1876 and 1878, respectively).