Inner Harbor

Black Rock
Past nights from AIS in May–Nov 2024, Apr–Oct 2025 and Oct 2026
Where boats stayed: 42.611° N, 70.656° W

171nights

123boats

Nights by wind direction

From	Nights	Boats	Wind 20 kt+	Windiest night (area)
N	15	27	2	28.9 ktgusts 49.8 kt
NE	16	19	4	27.5 ktgusts 39.2 kt
E	13	18	1	20.6 ktgusts 28.4 kt
SE	24	29	–	16.1 ktgusts 21.2 kt
S	34	46	1	21.9 ktgusts 32.6 kt
SW	41	48	–	19.4 ktgusts 25.5 kt
W	15	15	–	15.6 ktgusts 18.6 kt
NW	23	28	–	19.6 ktgusts 26.5 kt

Nearby anchorages

Smith Cove, Black Rock2 nights
Oakes Cove10 nights
Wonson Cove3 nights
Western Harbor15 nights
Gloucester Harbor, Tenpound Island17 nights
Southeast Harbor, Green Rock42 nights
Gloucester Harbor, Tablet Rock3 nights
Pancake Ground70 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.