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Gravelly Shoal Lighthouse

Fl R 6s🇺🇸Michigan's Eastern Lower Peninsula, USOperational

Location & Light Range

About Gravelly Shoal Lighthouse

Gravelly Shoal Lighthouse is a maritime navigation aid located in Michigan's Eastern Lower Peninsula, US. It is currently operational and active, providing guidance to vessels navigating the surrounding waters. The light sits at a focal height of 23 meters above mean sea level.

Light characteristic: The identifying signal of this lighthouse is Fl R 6s. This means the light produces 1 flash every 6 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: Gravelly Shoal Lighthouse is positioned at 44.0167°N, 83.5333°W, near Michigan's Eastern Lower Peninsula in US.

Geographic context: Gravelly Shoal 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

AU GRES

USXBI

5.7 NMWNW

JERRY'S

USECA

15.3 NMNNE

TAWAS CITY

USTWY

15.5 NMN

GREAT LAKES SHORES

USSH6

15.5 NMWSW

SEBEWAING

USSWB

17.2 NMS

Flash Characteristics

Characteristic Signature
Fl R 6s
Flash Type
Flashing
Light Color
Red
Flash Count
1 flash
Interval
6s

Physical Specifications

Focal Height
23m
Light Range
Not available
Status
ACTIVE
City
Michigan's Eastern Lower Peninsula
Country
🇺🇸US
Latitude
44.0167°
Longitude
-83.5333°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Gravelly Shoal Lighthouse at night?+
Gravelly Shoal displays the characteristic Fl R 6s — 1 red 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. The red color may indicate a specific sector or warning zone.
Which ports and harbors does Gravelly Shoal Lighthouse guide vessels into?+
Gravelly Shoal Lighthouse assists vessels approaching 5 nearby ports. The closest is AU GRES at 5.7 NM to the WNW. Other ports served include JERRY'S (15.3 NM NNE), TAWAS CITY (15.5 NM N), GREAT LAKES SHORES (15.5 NM WSW), SEBEWAING (17.2 NM S). Mariners should consult the relevant chart for full approach and pilotage information.
Is Gravelly Shoal Lighthouse still active and maintained?+
Yes, Gravelly Shoal 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 Gravelly Shoal Lighthouse?+
You can track vessels near Gravelly Shoal 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.