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Minot's Ledge Lighthouse

Fl 45s🇺🇸Northern Massachusetts, USInactive

Location & Light Range

About Minot's Ledge Lighthouse

Construction of the Minot's Ledge Lighthouse began in 1850, with the first light lit the same year. The tower stands 27 meters tall, with its focal plane at 26 meters above sea level. This lighthouse is located offshore of Cohasset and Scituate in northern Massachusetts. It is a granite structure, built in two sections. The original lighthouse was replaced after being destroyed by a storm shortly after its initial operation. The current structure at this site has been designated a Historic Civil Engineering Landmark.

Why it matters: The lighthouse is designated a Historic Civil Engineering Landmark.

Background
Minot's Ledge Light, officially Minots Ledge Light, is a lighthouse on Minots Ledge, one mile offshore of the towns of Cohasset and Scituate, Massachusetts, to the southeast of Boston Harbor. The current lighthouse is the second on the site, the first having been washed away in a storm after only a few months of use.

Light & Optic

Characteristic Signature
Fl 45s
Flash Type
Flashing
Flash Count
1 flash
Interval
45s
Focal Height
26m

Construction & History

Year Built
1850
Heritage Status
Historic Civil Engineering Landmark

References & Identifiers

Wikipedia
Read on Wikipedia →
Wikidata
Q6869325 →
OpenStreetMap
View on OSM →

Tower & Structure

Tower Height
27m

Location

City
Northern Massachusetts
Country
🇺🇸US
Latitude
42.2697°
Longitude
-70.7591°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Minot's Ledge Lighthouse at night?+
Minot's Ledge displays the characteristic Fl 45s — 1 flash every 45 seconds. 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.
Which ports and harbors does Minot's Ledge Lighthouse guide vessels into?+
Minot's Ledge Lighthouse assists vessels approaching 5 nearby ports. The closest is COHASSET at 2.1 NM to the SW. Other ports served include SCITUATE (4.3 NM SSE), Norwell (6.8 NM S), NORTH WEYMOUTH (7.8 NM W), Accord (8.3 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Minot's Ledge Lighthouse still active and maintained?+
Minot's Ledge Lighthouse is currently listed as inactive. It may have been decommissioned, replaced by a different navigation aid, or temporarily taken out of service. Mariners should check the latest Notices to Mariners for current status.
How can I track vessels near Minot's Ledge Lighthouse?+
You can track vessels near Minot's Ledge 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.