| NAME ▲ | ▼ | VESSEL ▲ | ▼ | RIG | YEAR ▲ | ▼ | AGE | MORE |
|
| Sylvester Hensdale | Jason | Ship | 1839 | 15 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Jason | Ship | 15 | 4' 10" | Dark | | | Hair | Eye | Residence | Rank | Remarks | | Brown | | New London | | | | |
|
| Sylvester Helan | Cohannet | Schr | 1870 | 36 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Cohannet | Schr | 36 | 5' 9" | Dark | | | Hair | Eye | Residence | Rank | Remarks | | Dark | | New Bedford | | | | |
|
| Sylvester Havins | Franklin | Bark | 1843 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Franklin | Bark | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Seaman | | | |
|
| Sylvester Havens | Franklin | Bark | 1843 | 25 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Franklin | Bark | 25 | 5' 7" | Black | | | Hair | Eye | Residence | Rank | Remarks | | Dark | | North Kingston | | Returned | | |
|
| Sylvester Havens | Falcon | Ship | 1840 | 23 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Falcon | Ship | 23 | | | | | Hair | Eye | Residence | Rank | Remarks | | | | Westport | | | | |
|
| Sylvester Havens | Statira | Ship | 1845 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Statira | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Seaman | | | |
|
| Sylvester Hathaway | Twilight | Ship | 1858 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Twilight | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Master | | | |
|
| Sylvester Hathaway | Eliza | Bark | 1869 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Eliza | Bark | | | Light | | | Hair | Eye | Residence | Rank | Remarks | | Light | | East Sandy Creek, Ny | | | | |
|
| Sylvester Hathaway | China | Ship | 1859 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | China | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Master | | | |
|
| Sylvester Hastings | Grand Turk | Ship | 1830 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Grand Turk | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | | | | |
|
| Sylvester Harris | Sarah | Bark | 1850 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Sarah | Bark | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Greenhand | | | |
|
| Sylvester Hanes | Joseph Maxwell | Ship | 1852 | | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Joseph Maxwell | Ship | | | | | | Hair | Eye | Residence | Rank | Remarks | | | | | Seaman | CROSSED OUT | | |
|
| Sylvester Hamilton | Averick | Ship | 1840 | 17 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Averick | Ship | 17 | | | | | Hair | Eye | Residence | Rank | Remarks | | | | Chatham | | Returned | | |
|
| Sylvester Halsey | Columbia | Ship | 1838 | 26 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Columbia | Ship | 26 | 5' 9" | Light | | | Hair | Eye | Residence | Rank | Remarks | | Brown | | Bridgehampton | | | | |
|
| Sylvester H. [Dyer] | Golconda | Bark | 1827 | 19 | ⊕ |
| | | Vessel | Rig | Age | Height | Skin | | Golconda | Bark | 19 | 5' 4 1/4" | Light | | | Hair | Eye | Residence | Rank | Remarks | | Brown | | Boston | | | | |
|
