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Egg Rock Lighthouse

Fl R 5s🇺🇸Eastern Maine, USOperational

Location & Light Range

About Egg Rock Lighthouse

Egg Rock Light, constructed in 1875, stands on Frenchman Bay in Eastern Maine. The lighthouse features a cylindrical brick tower that reaches 12 meters in height, with the light positioned at 19.5 meters. Its architecture is distinctive, incorporating a square tower that extends through the keeper's house. The light emits a red signal, flashing once every 40 seconds. This structure has served as an active aid to navigation since its initial illumination.

Why it matters: Listed on the National Register of Historic Places in 1988, Egg Rock Light Station is recognized for its historical and architectural significance.

Background
Egg Rock Light is a lighthouse on Frenchman Bay, Maine. Built in 1875, it is one of coastal Maine's architecturally unique lighthouses, with a square tower projecting through the square keeper's house. Located on Egg Rock, midway between Mount Desert Island and the Schoodic Peninsula, it is an active aid to navigation, flashing red every 40 seconds. The light was listed on the National Register of Historic Places as Egg Rock Light Station in 1988.

Light & Optic

Characteristic Signature
Fl R 5s
Flash Type
Flashing
Light Color
Red
Flash Count
1 flash
Interval
5s
Focal Height
19.5m

Construction & History

Year Built
1875
Heritage Status
National Register of Historic Places listed place

Visiting

Open to public
attraction

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
12m
Tower Shape
cylindrical
Tower Color
white
Material
brick

Location

City
Eastern Maine
Country
🇺🇸US
Latitude
44.3540°
Longitude
-68.1380°

References & Identifiers

Admiralty No.
J0040
USCG No.
1-1865
ARLHS No.
USA-268
Wikipedia
Read on Wikipedia →
Wikidata
Q5347828 →
OpenStreetMap
View on OSM →
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Frequently Asked Questions

How do mariners identify Egg Rock Lighthouse at night?+
Egg Rock 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 Egg Rock Lighthouse guide vessels into?+
Egg Rock Lighthouse assists vessels approaching 5 nearby ports. The closest is WINTER HARBOR at 3.2 NM to the NE. Other ports served include Bar Harbor (3.7 NM NW), BUNKERS PIER (4.7 NM ENE), HANCOCK (9.1 NM NNW), BERNARD (11.5 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Egg Rock Lighthouse still active and maintained?+
Yes, Egg Rock 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 Egg Rock Lighthouse?+
You can track vessels near Egg Rock 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.