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Great Duck Island Lighthouse

Fl (3) White 15s🇨🇦Unorganized West Manitoulin, CAOperational

Location & Light Range

About Great Duck Island Lighthouse

A white, octagonal concrete tower stands 26 meters tall on the southwest coast of Great Duck Island. Construction of this structure was completed in 1918, and it was first lit the same year. The tower's lantern and gallery are painted red, contrasting with the white exterior. The light emits three white flashes every 15 seconds, visible for nearly 16 nautical miles. This lighthouse is situated on an uninhabited island in Lake Huron, approximately 25 kilometers from Manitoulin Island's coast.

Why it matters: This lighthouse provides navigational guidance across a significant area of Lake Huron, serving vessels traversing the waters southwest of Manitoulin Island.

Light & Optic

Characteristic Signature
Fl (3) White 15s
Flash Type
Flashing
Light Color
White
Flash Count
3 flashes
Interval
15s
Raw Code
Fl(3) W 15s
Focal Height
33m
Geographic Range
15.9NM

Construction & History

Year Built
1918

References & Identifiers

Nearest Port
Meldrum Bay(18.0 km)
USCG No.
7-12685
ARLHS No.
CAN-1032

Tower & Structure

Tower Height
26m
Tower Shape
octagonal
Tower Color
white
Material
concrete

Structure: octagonal concrete tower, painted white; lantern and gallery painted red

Location

City
Unorganized West Manitoulin
Country
🇨🇦Canada
Region
Ontario
Sea Region
An uninhabited 1300 ha island in Lake Huron about 25 km off the southwestern coast of Manitoulin Island, located on the southwest coast of Great Duck Island.
Latitude
45.6425°
Longitude
-82.9633°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Great Duck Island Lighthouse at night?+
Great Duck Island displays the characteristic Fl (3) White 15s — 3 white flashes every 15 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Great Duck Island Lighthouse guide vessels into?+
Great Duck Island Lighthouse assists vessels approaching 5 nearby ports. The closest is Meldrum Bay at 18.6 NM to the NNW. Other ports served include Gore Bay (26.9 NM NE), PRESQUE ISLE (28.5 NM SW), Blind River (32.5 NM N), Mindemoya (33.9 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Great Duck Island Lighthouse still active and maintained?+
Yes, Great Duck 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 Great Duck Island Lighthouse?+
You can track vessels near Great Duck 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.