Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Mary Island Lighthouse

Fl W 6s🇺🇸Alaska, USOperational

Location & Light Range

About Mary Island Lighthouse

Also known as: Mary Island Lighthouse

This lighthouse was constructed in 1903 and first lit the same year. It stands 23 meters above sea level. The structure emits a white light. Its location is on the northeastern part of Mary Island in southeastern Alaska.

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

Background
The Mary Island Light Station is a lighthouse located on the northeastern part of Mary Island in southeastern Alaska, United States.

Light & Optic

Characteristic Signature
Fl W 6s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
6s
Focal Height
23m

Location

City
Alaska
Country
🇺🇸US
Latitude
55.1000°
Longitude
-131.1830°

Nearby Vessels

Flag
Type
Name
Dist.

Construction & History

Year Built
1903
Heritage Status
National Register of Historic Places listed place

References & Identifiers

Wikipedia
Read on Wikipedia →
Wikidata
Q3538980 →
OpenStreetMap
View on OSM →
Live tracking · 50,000+ mariners

Find Mary Island Lighthouse on the live nautical map

Plan voyages near US, see nearby vessels in real time, and explore 14,900+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Mary Island Lighthouse at night?+
Mary Island displays the characteristic Fl W 6s — 1 white flash every 6 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 Mary Island Lighthouse guide vessels into?+
Mary Island Lighthouse assists vessels approaching 5 nearby ports. The closest is Metlakatla at 13.2 NM to the W. Other ports served include Annette Island (16.4 NM NW), Ketchikan (22.9 NM NW), Port Simpson (41.2 NM SE), Neets Bay (43.4 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Mary Island Lighthouse still active and maintained?+
Yes, Mary Island 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 Mary Island Lighthouse?+
You can track vessels near Mary Island 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.