Portsmouth Harbor, Sullivan Point
Past nights from AIS in Aug 2024 and Aug–Sept 2025
Where boats stayed: 43.073° N, 70.731° W
5nights
5boats
Nights by wind direction
| From | Nights | Boats | Nights in 20 kt+ | Windiest night (area) |
|---|---|---|---|---|
| E | 1 | 1–2 | – | 4.7 ktgusts 10 kt |
| SE | 1 | 1–2 | – | 6.7 ktgusts 11.3 kt |
| S | 2 | 1–2 | – | 11 ktgusts 19.3 kt |
| NW | 1 | 1–2 | – | 5.7 ktgusts 9.8 kt |
Nearby anchorages
- Portsmouth Harbor, N.H., North of New - Castle Island1 night
- Little Harbor, Shapleigh Island5 nights
- Jones Cove, New Castle Island6 nights
- Anchorage off Seavey's Island, Jamaica Island6 nights
- Portsmouth Harbor30 nights
- Portsmouth Harbor, Jamaica Island14 nights
- Anchorage off Seavey's Island, Back Channel29 nights
- Portsmouth Harbor, Four Tree Island3 nights
AIS shows only boats that carry it and that a receiver hears, so no boats on AIS never means an anchorage is empty or unsuitable. Boats that live here (at their own berth or mooring, or a week or more in one place) are left out, and boats in marinas and at piers are counted apart from the anchorage's nights. Not for navigation.