Anchorage 0.4 km north-west of National Harbor
Rosilie Island
Past nights from AIS in Dec 2024 and Oct–Nov 2025
Where boats stayed: 38.785° N, 77.019° W
4nights
3boats
Nights by wind direction
| From | Nights | Boats | Nights in 20 kt+ | Windiest night (area) |
|---|---|---|---|---|
| N | 1 | 1–2 | – | 8 ktgusts 16 kt |
| E | 2 | 1–2 | – | 4.5 ktgusts 7 kt |
| S | 1 | 1–2 | – | 9.1 ktgusts 20.9 kt |
Nearby anchorages
- Anchorage 1.6 km west of National Harbor, Potomac River5 nights
- Anchorage off Jones Point, Alexandria1 night
- Anchorage in Oxon Run4 nights
- Anchorage off Dyke Island1 night
- Anchorage off Coconut Island, New Alexandria2 nights
- Anchorage off Goose Island, Alexandria1 night
- Anchorage in Four Mile Run3 nights
- Anchorage off Mockley Point, Potomac River3 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.