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Ontonagon Harbor West Breakwater Lighthouse

Fl R 4s🇺🇸Michigan's Western Upper Peninsula, USOperational

Location & Light Range

About Ontonagon Harbor West Breakwater Lighthouse

This 9-meter red navigation tower stands at Ontonagon Harbor on Michigan's Western Upper Peninsula. Its focal height reaches 9.5 meters, providing a geographic range of 8 nautical miles. The structure emits a flashing red light, guiding vessels in the area. Its operational status confirms its ongoing use for maritime navigation.

Light & Optic

Characteristic Signature
Fl R 4s
Flash Type
Flashing
Light Color
Red
Flash Count
1 flash
Interval
4s
Raw Code
Fl
Focal Height
9.5m
Geographic Range
8NM

Location

City
Michigan's Western Upper Peninsula
Country
🇺🇸US
Latitude
46.8793°
Longitude
-89.3306°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
9m
Tower Shape
navigation
Tower Color
red

References & Identifiers

Admiralty No.
LLNR 15225
OpenStreetMap
View on OSM →
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Frequently Asked Questions

How do mariners identify Ontonagon Harbor West Breakwater Lighthouse at night?+
Ontonagon Harbor West Breakwater displays the characteristic Fl R 4s — 1 red 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 red color may indicate a specific sector or warning zone.
Which ports and harbors does Ontonagon Harbor West Breakwater Lighthouse guide vessels into?+
Ontonagon Harbor West Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Ontonagon at 0.3 NM to the SSE. Other ports served include White Pine (13 NM SW), MARKHAMS (32.7 NM ENE), HOUGHTON (34.4 NM ENE), Baraga (35.3 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ontonagon Harbor West Breakwater Lighthouse still active and maintained?+
Yes, Ontonagon Harbor West Breakwater 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 Ontonagon Harbor West Breakwater Lighthouse?+
You can track vessels near Ontonagon Harbor West Breakwater 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.