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Portsmouth Harbor Lighthouse

F G🇺🇸New Hampshire, USOperational

Location & Light Range

About Portsmouth Harbor Lighthouse

Constructed in 1771, this lighthouse features a green tower reaching 14.5 meters in height. Its focal plane is 16 meters above the water. The light emits a fixed green signal. This aid to navigation has been operational since its construction.

Why it matters: The lighthouse is listed on the National Register of Historic Places.

Light & Optic

Characteristic Signature
F G
Flash Type
Fixed
Light Color
Green
Flash Count
1 flash
Raw Code
F
Focal Height
16m

Construction & History

Year Built
1771
Heritage Status
National Register of Historic Places listed place

References & Identifiers

Wikipedia
Read on Wikipedia →
Wikidata
Q2105290 →
OpenStreetMap
View on OSM →

Tower & Structure

Tower Height
14.5m
Tower Color
green

Location

City
New Hampshire
Country
🇺🇸US
Latitude
43.0710°
Longitude
-70.7086°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Portsmouth Harbor Lighthouse at night?+
Portsmouth Harbor displays the characteristic F G. Each lighthouse has a unique flash pattern published in the List of Lights, allowing mariners to positively identify it and distinguish it from other navigation aids in the area. The green color may indicate a specific sector or warning zone.
Which ports and harbors does Portsmouth Harbor Lighthouse guide vessels into?+
Portsmouth Harbor Lighthouse assists vessels approaching 5 nearby ports. The closest is Portsmouth at 0.4 NM to the WNW. Other ports served include NEW CASTLE (1.1 NM W), Kittery (1.5 NM WNW), Portsmouth (2.3 NM WNW), PATTEN'S YARD (4.3 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Portsmouth Harbor Lighthouse still active and maintained?+
Yes, Portsmouth Harbor Lighthouse is currently operational. It is actively maintained and continues to emit its characteristic light signal for marine navigation. Most modern lighthouses are automated and monitored remotely by the national maritime authority.
How can I track vessels near Portsmouth Harbor Lighthouse?+
You can track vessels near Portsmouth Harbor Lighthouse in real time using MarineRadar. The platform shows live AIS positions of ships in the area, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page to open the live map centered on this lighthouse.