By ship name
| Ship | Year | Origin | Destination |
| HANNAH | 1764 | Cork | [unspecified] |
| HANNAH KERR | 1851 | Londonderry | New York |
| HANNAH THORNTON | 1850 | Belfast | Philadelphia |
| HARMONY | 1811 | Londonderry | Philadelphia |
| HARVEY HIDE | 1811 | Belfast | New York |
| HAVERFORD | 1921 | Liverpool | Philadelphia |
| HECLA | 1863 | Queenstown | New York |
| HELEN MARIA | 1847 | Portrush | Boston |
| HELVETIA | 1867 | Queenstown | New York |
| HELVETIA | 1868 | Queenstown | New York |
| HELVETIA | 1868 | Queenstown | New York |
| HELVETIA | 1870 | Queenstown | New York |
| HELVETIA | 1878 | Queenstown | New York |
| HELVETIA | 1879 | Queenstown | New York |
| HERBE | 1851 | Cork | New York |
| HERCULES | 1851 | Belfast | New York |
| HERMAN ROOSEN | 1854 | Dublin | New York |
| HESPERUS | 1820 | Belfast | New York |
| HESPERUS | 1820 | Belfast | New York |
| HIBERNIA | 1811 | Belfast | New York |
| HIBERNIA | 1820 | Dublin | New York |
| HIBERNIA | 1837 | Galway | New York |
| HIBERNIA | 1868 | Moville | New York |
| HIBERNIAN | 1868 | Moville | New York |
| HIBERNIAN | 1896 | Londonderry | Boston |
| HIBERNIAN | 1896 | Galway | Boston |
| HOPEWELL | 1803 | Newry | New York |
| HUNTINGDON | 1849 | Limerick | Baltimore |
| HUNTRESS | 1811 | Dublin | New York |