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

Gros Cap Reef Lighthouse

Fl R 5s🇺🇸Western Ontario, USOperational

Location & Light Range

About Gros Cap Reef Lighthouse

Gros Cap Reef Lighthouse is a maritime navigation aid located in Western Ontario, US. It is currently operational and active, providing guidance to vessels navigating the surrounding waters. The light sits at a focal height of 18 meters above mean sea level.

Light characteristic: The identifying signal of this lighthouse is Fl R 5s. This means the light produces 1 flash every 5 seconds. Mariners use this distinctive pattern to positively identify the light and distinguish it from other aids to navigation in the area. The light color is red, which may indicate a specific sector or warning zone.

Position: Gros Cap Reef Lighthouse is positioned at 46.5120°N, 84.6150°W, near Western Ontario in US.

Geographic context: Gros Cap Reef Lighthouse is situated on the North Pacific Ocean. The location falls within the temperate maritime climate zone.

Nearby lighthouses in US: Other lighthouses in the region include Abagadasset Point Range, Absecon, Admiralty Head Light, Ahukini Breakwater, Alameda County (Oakland Area) Lighthouses. View all on the Lighthouses Directory.

Nearby Ports

Sault Sainte Marie

USSSM

11 NME

Sault-Sainte-Marie

CASSM

11.3 NME

CEDARVILLE

USXDO

32.8 NMSSE

Brevort

USBM4

34.4 NMSSW

Mackinac Island

USMCD

40 NMS

Flash Characteristics

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

Physical Specifications

Focal Height
18m
Light Range
Not available
Status
ACTIVE
City
Western Ontario
Country
🇺🇸US
Latitude
46.5120°
Longitude
-84.6150°

Nearby Vessels

Flag
Type
Name
Dist.
Live tracking · 50,000+ mariners

Find Gros Cap Reef Lighthouse on the live nautical map

Plan voyages near US, see nearby vessels in real time, and explore 7,000+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Gros Cap Reef Lighthouse at night?+
Gros Cap Reef 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 Gros Cap Reef Lighthouse guide vessels into?+
Gros Cap Reef Lighthouse assists vessels approaching 5 nearby ports. The closest is Sault Sainte Marie at 11 NM to the E. Other ports served include Sault-Sainte-Marie (11.3 NM E), CEDARVILLE (32.8 NM SSE), Brevort (34.4 NM SSW), Mackinac Island (40 NM S). Mariners should consult the relevant chart for full approach and pilotage information.
Is Gros Cap Reef Lighthouse still active and maintained?+
Yes, Gros Cap Reef 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 Gros Cap Reef Lighthouse?+
You can track vessels near Gros Cap Reef 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.