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Little Mark Island Monument Lighthouse

Fl W 4s🇺🇸Southern Maine, USOperational

Location & Light Range

About Little Mark Island Monument Lighthouse

Constructed in 1827, the Little Mark Island Monument serves as both a day beacon and a shipwreck refuge. This pyramidal stone structure is located on Little Mark Island in the northern part of Casco Bay, off the coast of southern Maine. It is one of only three similar structures built in the state. The United States Coast Guard currently manages the monument, which is topped by a beacon light. The monument remains an active aid to navigation.

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

Background
The Little Mark Island Monument is a historic day beacon and shipwreck refuge on Little Mark Island in northern Casco Bay off the southern coast of the United States state of Maine. The monument, a pyramidal stone structure built in 1827, is one of only three such structures ever built in the state, and is now topped by a beacon light. It is owned and managed by the United States Coast Guard, and is an active aid to navigation. It was listed on the National Register of Historic Places in 2016.

Light & Optic

Characteristic Signature
Fl W 4s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
4s
Focal Height
22.5m

Location

City
Southern Maine
Country
🇺🇸US
Latitude
43.7092°
Longitude
-70.0314°

Nearby Vessels

Flag
Type
Name
Dist.

Construction & History

Heritage Status
National Register of Historic Places listed place

References & Identifiers

Wikipedia
Read on Wikipedia →
Wikidata
Q28124807 →
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Frequently Asked Questions

How do mariners identify Little Mark Island Monument Lighthouse at night?+
Little Mark Island Monument displays the characteristic Fl W 4s — 1 white 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.
Which ports and harbors does Little Mark Island Monument Lighthouse guide vessels into?+
Little Mark Island Monument Lighthouse assists vessels approaching 5 nearby ports. The closest is COOKS LOBSTER HOUSE at 3 NM to the NE. Other ports served include YARMOUTH (8 NM NW), GREAT ISLAND BOAT (8.8 NM NE), Portland (9.8 NM WSW), Portland (10.3 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Little Mark Island Monument Lighthouse still active and maintained?+
Yes, Little Mark Island Monument 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 Little Mark Island Monument Lighthouse?+
You can track vessels near Little Mark Island Monument 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.