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Gosport Harbor
Gosport Harbor sits right at the Isles of Shoals, a remote island cluster straddling the New Hampshire-Maine state line about 10 miles offshore from Portsmouth. You'll drop anchor here in 6–20 feet of water, sheltered by breakwaters connecting Star, Cedar, Smuttynose, and Malaga Islands — a wild, rocky setting that feels genuinely far from the mainland. Moorings are usually available except on busy summer weekends, so plan accordingly if you're heading out in peak season.
Based on AIS data
quiet → busy
Marinas and anchorages near Gosport Harbor · times are dock to dock
Popular Times
How full it gets, by local hour — tallest when the most boats are here.
00:0006:0012:0018:0023:00
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- Fullest around 00:00, emptiest around 10:00
- Half the boats arrive by 15:00
- 67% of visits are overnight
- Typical day stop: ~3h · max recorded 7 boats
Plan a Passage
Popular
21 legs boats have actually been recorded sailing.
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