| NAME ▲ | ▼ | VESSEL ▲ | ▼ | RIG | YEAR ▲ | ▼ | AGE | MORE |
|
| Isaac C Weeks | Kate Cory | Bark | 1862 | 27 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Kate Cory | Bark | 27 | | Dark | | | Hair | Eye | Residence | Rank | Remarks | | Dark | | Chilmark | 2nd Mate | | | |
|
| Isaac C, Howland | Arab | Ship | 1857 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Arab | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | 3rd Mate | | | |
|
| Isaac C, Weeks | India | Ship | 1858 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | India | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Boatsteerer | | | |
|
| Isaac C. Caswell | Asia | Ship | 1864 | 15 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Asia | Ship | 15 | 5' 3 3/4" | Light | | | Hair | Eye | Residence | Rank | Remarks | | Light | | New Bedford | | | | |
|
| Isaac C. Caswell | Draco | Bark | 1866 | 18 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Draco | Bark | 18 | 5' 6" | Dark | | | Hair | Eye | Residence | Rank | Remarks | | B | | New Bedford | | | | |
|
| Isaac C. Chadwick | Florida | Ship | 1840 | 19 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Florida | Ship | 19 | | | | | Hair | Eye | Residence | Rank | Remarks | | | | Dartmouth | | Returned | | |
|
| Isaac C. Daggett | Joseph Maxwell | Ship | 1840 | 25 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Joseph Maxwell | Ship | 25 | | | | | Hair | Eye | Residence | Rank | Remarks | | | | Tisbury | | | | |
|
| Isaac C. Gifford | Emerald | Schr | 1830 | 21 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Emerald | Schr | 21 | 5' 4 1/2" | Dark | | | Hair | Eye | Residence | Rank | Remarks | | Black | | New Bedford | | | | |
|
| Isaac C. Head | George Porter | Brig | 1827 | 21 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | George Porter | Brig | 21 | 5' 7 3/4" | Light | | | Hair | Eye | Residence | Rank | Remarks | | Brown | | Dartmouth | | | | |
|
| Isaac C. Head | George Porter | Ship | 1828 | 21 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | George Porter | Ship | 21 | | Light | | | Hair | Eye | Residence | Rank | Remarks | | Brown | | Westport | | | | |
|
| Isaac C. Hemdrakes | Isaac Howland | Ship | 1854 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Isaac Howland | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Boatsteerer | | | |
|
| Isaac C. Higgins | United States | Bark | 1840 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | United States | Bark | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Boatsteerer | | | |
|
| Isaac C. Higgins | Emerald | Ship | 1843 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Emerald | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | 4th Mate | | | |
|
| Isaac C. Howland | Gideon Howland | Ship | 1844 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Gideon Howland | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | 1st Mate | DIED AT SEA 01/1845 | | |
|
| Isaac C. Howland | Arab | Ship | 1857 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Arab | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | Dartmouth | 3rd Mate | | | |
|
