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Cobb Point Bar Lighthouse

Fl G 4s🇺🇸Maryland, USOperational

Location & Light Range

About Cobb Point Bar Lighthouse

The Cobb Point Bar Light, also known as Cobb Island Bar Light, was a lighthouse built on screw piles. It first shone in 1889, the same year construction was completed. This light stood 5.5 meters above the water. Its characteristic was a green light.

Background
The Cobb Point Bar Light (also called Cobb Island Bar Light) was a screw-pile lighthouse located in the Potomac River.

Light & Optic

Characteristic Signature
Fl G 4s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
4s
Focal Height
5.5m

Location

City
Maryland
Country
🇺🇸US
Latitude
38.2424°
Longitude
-76.8264°

Nearby Vessels

Flag
Type
Name
Dist.

Construction & History

Year Built
1889

References & Identifiers

Wikipedia
Read on Wikipedia →
Wikidata
Q5138773 →
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Frequently Asked Questions

How do mariners identify Cobb Point Bar Lighthouse at night?+
Cobb Point Bar displays the characteristic Fl G 4s — 1 green flash every 4 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Cobb Point Bar Lighthouse guide vessels into?+
Cobb Point Bar Lighthouse assists vessels approaching 5 nearby ports. The closest is LEONARDTOWN at 9.3 NM to the ENE. Other ports served include Aqualand Marina (10.1 NM NW), CAPE ST MARY'S (14.5 NM NE), WEEKS MARINE RAILWAY (15.9 NM ENE), BLACKSTONE (16 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Cobb Point Bar Lighthouse still active and maintained?+
Yes, Cobb Point Bar 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 Cobb Point Bar Lighthouse?+
Cobb Point Bar 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 Cobb Point Bar Lighthouse?+
You can track vessels near Cobb Point Bar 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.