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Southwest Ledge Lighthouse

Fl R 5s🇺🇸Connecticut, USOperational

Location & Light Range

About Southwest Ledge Lighthouse

Southwest Ledge Lighthouse was completed in 1877. This structure stands 14 meters in height, with its focal plane positioned 17.5 meters above the water. The lighthouse emits a red light. Construction began in 1877, and the light was first activated in the same year.

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

Light & Optic

Characteristic Signature
Fl R 5s
Flash Type
Flashing
Light Color
Red
Flash Count
1 flash
Interval
5s
Focal Height
17.5m

Construction & History

Year Built
1877
Heritage Status
National Register of Historic Places listed place

References & Identifiers

Wikipedia
Read on Wikipedia →
Wikidata
Q7571308 →
OpenStreetMap
View on OSM →

Tower & Structure

Tower Height
14m

Location

City
Connecticut
Country
🇺🇸US
Latitude
41.2345°
Longitude
-72.9122°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Southwest Ledge Lighthouse at night?+
Southwest Ledge displays the characteristic Fl R 5s — 1 red flash every 5 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. The red color may indicate a specific sector or warning zone.
Which ports and harbors does Southwest Ledge Lighthouse guide vessels into?+
Southwest Ledge Lighthouse assists vessels approaching 5 nearby ports. The closest is WEST HAVEN at 2.5 NM to the NNW. Other ports served include New Haven (3.4 NM N), BRANFORD (5 NM ENE), Milford (6.4 NM W), POOTATUCK (9.8 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Southwest Ledge Lighthouse still active and maintained?+
Yes, Southwest Ledge 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.
What shipping routes pass near Southwest Ledge Lighthouse?+
Southwest Ledge Lighthouse is located within the US East Coast shipping lane — a major shipping corridor serving ports along the Atlantic seaboard of the United States. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Southwest Ledge Lighthouse?+
You can track vessels near Southwest 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.