| NAME ▲ | ▼ | VESSEL ▲ | ▼ | RIG | YEAR ▲ | ▼ | AGE | MORE |
|
| John O. Atwood | Metacom | Ship | 1848 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Metacom | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | 3rd Mate | | | |
|
| John O. Aldrick | Emerald | Bark | 1857 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Emerald | Bark | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Greenhand | | | |
|
| John O'rorke | Milwood | Bark | 1871 | 21 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Milwood | Bark | 21 | 5' 5" | Light | | | Hair | Eye | Residence | Rank | Remarks | | Brown | | New York | | | | |
|
| John O'Nill | Plutarch | Schooner | 1838 | 25 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Plutarch | Schooner | 25 | 5' 8" | Light | | | Hair | Eye | Residence | Rank | Remarks | | Light | | New York | | | | |
|
| John O'niel | Saratoga | Ship | 1856 | 21 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Saratoga | Ship | 21 | | Light | | | Hair | Eye | Residence | Rank | Remarks | | Light | | Boston | | | | |
|
| John O'niel | Petrel | Schr | 1870 | 16 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Petrel | Schr | 16 | 5' 0" | Light | | | Hair | Eye | Residence | Rank | Remarks | | Brown | | Saint Helena | | | | |
|
| John O'neill | Pacific | Bark | 1876 | 26 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Pacific | Bark | 26 | 5' 9" | Light | | | Hair | Eye | Residence | Rank | Remarks | | Brown | | Pittston, Ny | | | | |
|
| John O'neil | Minnesota | Bark | 1876 | 29 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Minnesota | Bark | 29 | 5' 8" | Dark | | | Hair | Eye | Residence | Rank | Remarks | | Dark | | Saint Helena | | | | |
|
| John O'neil | John P. West | Bark | 1882 | 26 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | John P. West | Bark | 26 | 5' 8" | Light | | | Hair | Eye | Residence | Rank | Remarks | | Dark | | New York | Seaman | | | |
|
| John O'neal | John P. West | Bark | 1871 | 18 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | John P. West | Bark | 18 | 5' 4" | Dark | | | Hair | Eye | Residence | Rank | Remarks | | Black | | Saint Helena | | | | |
|
| John O'Harra? | Mercury | Ship | 1842 | 22 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Mercury | Ship | 22 | 5' 3" | Dark | | | Hair | Eye | Residence | Rank | Remarks | | Dark | | New York City | | | | |
|
| John O'feiro | Andrew Hicks | Bark | 1914 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Andrew Hicks | Bark | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Steward | | | |
|
| John O'connor | William A. Graber | Schr | 1916 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | William A. Graber | Schr | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Greenhand | | | |
|
| John O'connell | Platina | Bark | 1901 | 48 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Platina | Bark | 48 | 5' 8" | Gray | | | Hair | Eye | Residence | Rank | Remarks | | Gray | | Boston, Ma | | | | |
|
| John O'Brien | Anadir | Bark | 1851 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Anadir | Bark | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | | | | |
|
