ðə fˈɜːst nˈoʊn dˌɑːkjuːməntˈeɪʃən ʌv ðɪs wʌz ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd fˈɪfti sˈɛvən, baɪ luːtˈɛnənt tʃˈɪmoʊ ʌvðɪ ˌeɪtʃˌɛmˌɛsvˈiː tˈɔːɹtʃ ɹˈaɪɾɪŋ ʌvðə ʃˈɪp nˈeɪmz ɪnðə pˈoʊst ˈɑːfɪs kˈeɪv.
The first known documentation of this was in 1857, by Lieutenant Chimmo of the HMSV Torch writing of the ship names in the 'Post Office Cave'.