Portsmouth Harbor
Drop anchor in Portsmouth Harbor and you're right in the heart of New Hampshire's historic seacoast, with the iconic Portsmouth Harbor Lighthouse at Fort Constitution visible from the water in nearby New Castle. The harbor is alive with working vessels, scenic shoreline, and the charming colonial city of Portsmouth just a stone's throw away — one of the oldest towns in the US with a genuinely vibrant food and arts scene. The mix of maritime history and lively waterfront energy makes this anchorage feel like more than just a waypoint.
Based on AIS data
quiet → busy
Marinas and anchorages near Portsmouth Harbor · times are dock to dock
Popular Times
How full it gets, by local hour — tallest when the most boats are here.
- Fullest around 01:00, emptiest around 11:00
- Half the boats arrive by 15:00
- 87% of visits are overnight
- Typical day stop: ~3h · max recorded 10 boats
Plan a Passage
Popular
21 legs boats have actually been recorded sailing.