Bristol Harbor, Castle Island
Past nights from AIS in Jul–Aug 2024 and Jul–Sept 2025
Where boats stayed: 41.648° N, 71.277° W
11nights
5boats
Nights by wind direction
| From | Nights | Boats | Wind 20 kt+ | Windiest night (area) |
|---|---|---|---|---|
| N | 2 | 1–2 | – | 7.9 ktgusts 16.5 kt |
| SE | 1 | 1–2 | – | 5.8 ktgusts 12.6 kt |
| S | 2 | 1–2 | – | 15.6 ktgusts 36.8 kt |
| SW | 4 | 3 | – | 9.9 ktgusts 20.5 kt |
| NW | 2 | 1–2 | – | 8.2 ktgusts 14.8 kt |
Nearby anchorages
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.