| NAME ▲ | ▼ | VESSEL ▲ | ▼ | RIG | YEAR ▲ | ▼ | AGE | MORE |
|
| Isaac R. Jay | Gold Hunter | ship | 1835 | 44 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Gold Hunter | ship | 44 | 5' 5" | black | | | Hair | Eye | Residence | Rank | Remarks | | black | | Providence, RI | | did not return | | |
|
| Isaac R. Lincoln | Pacific | Bark | 1867 | 14 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Pacific | Bark | 14 | 4' 8" | Light | | | Hair | Eye | Residence | Rank | Remarks | | Brown | | Dartmouth | | | | |
|
| Isaac R. Macomber | Leonidas | Brig | 1858 | 18 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Leonidas | Brig | 18 | | Dark | | | Hair | Eye | Residence | Rank | Remarks | | Brown | | Westport | | | | |
|
| Isaac R. Reynolds | Fenelon | Ship | 1842 | 23 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Fenelon | Ship | 23 | 5' 4 3/4" | Light | | | Hair | Eye | Residence | Rank | Remarks | | Black | | North Bridgewater | | | | |
|
| Isaac R. Tripp | Dartmouth | Ship | 1840 | 18 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Dartmouth | Ship | 18 | | | | | Hair | Eye | Residence | Rank | Remarks | | | | Tiverton | | Returned | | |
|
| Isaac R. Tripp | Dartmouth | Ship | 1841 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Dartmouth | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Ordinary | DID NOT RETURN FROM VOYAGE | | |
|
| Isaac R. Williams | Sally Anne | Ship | 1844 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Sally Anne | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Seaman | | | |
|
| Isaac Rass | Colossus | Schooner | 1837 | 24 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Colossus | Schooner | 24 | 5' 10" | Colored | | | Hair | Eye | Residence | Rank | Remarks | | colored | | Stonington | | | | |
|
| Isaac Ray | Maria | Ship | 1810 | 25 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Maria | Ship | 25 | | Mulatto | | | Hair | Eye | Residence | Rank | Remarks | | | | New Bedford | Mariner | | | |
|
| Isaac Read | Milwood | Bark | 1842 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Milwood | Bark | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Greenhand | | | |
|
| Isaac Read | Pilgrim | brig | 1839 | 23 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Pilgrim | brig | 23 | 5' 10 1/4" | light | | | Hair | Eye | Residence | Rank | Remarks | | brown | | Fall River, MA | | returned on account of having lost her boats | | |
|
| Isaac Remington | Milwood | Bark | 1846 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Milwood | Bark | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Greenhand | | | |
|
| Isaac Reton | Courier | Ship | 1842 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Courier | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Greenhand | | | |
|
| Isaac Rider | Elizabeth | Bark | 1850 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Elizabeth | Bark | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Greenhand | | | |
|
| Isaac Robenson | Harvest | Bark | 1843 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Harvest | Bark | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | | | | |
|
