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Gravenhurst Narrows Lighthouse

F Red🇨🇦Gravenhurst, CAOperational

Location & Light Range

About Gravenhurst Narrows Lighthouse

Also known as: Gravenhurst Narrows (Lighthouse Island)

A square pyramidal tower, standing 8 meters tall, guides vessels into Gravenhurst harbor from Lake Muskoka. The tower is painted white and features a red lantern roof. Its focal plane is 9 meters above the water, providing a geographic range of 10 nautical miles. This modern structure, built in 2017, replaced a 1905 lighthouse that had significantly deteriorated. The light emits a fixed red signal. The island site where the lighthouse stands is accessible to visitors, though the tower itself is closed.

Why it matters: This lighthouse is essential for guiding recreational and commercial vessels safely through the Lighthouse Narrows into Gravenhurst harbor, a key hub on Lake Muskoka.

Light & Optic

Characteristic Signature
F Red
Flash Type
Fixed
Light Color
Red
Raw Code
F R
Focal Height
9m
Geographic Range
10NM

Construction & History

Year Built
2017
First Lit
1884

Significant events: This lighthouse replaced the badly-deteriorated 1905 lighthouse in the fall of 2017

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
8m
Tower Shape
square
Tower Color
white with a red lantern roof

Structure: square pyramidal tower with lantern and gallery, colored white; the lantern roof is red

Location

City
Gravenhurst
Country
🇨🇦Canada
Region
Ontario
Sea Region
on an island on the west side of the Lighthouse Narrows at the entrance to Gravenhurst harbor, at the south end of Lake Muskoka
Latitude
44.9549°
Longitude
-79.4064°

References & Identifiers

Nearest Port
Midland(23.4 km)
ARLHS No.
CAN-1031
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Frequently Asked Questions

How do mariners identify Gravenhurst Narrows Lighthouse at night?+
Gravenhurst Narrows displays the characteristic F Red. 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 Gravenhurst Narrows Lighthouse guide vessels into?+
Gravenhurst Narrows Lighthouse assists vessels approaching 5 nearby ports. The closest is Bala at 8.7 NM to the WNW. Other ports served include Victoria Harbour (19.7 NM SW), Midland (25 NM WSW), Penetanguishene (25.1 NM WSW), Parry Sound (34.9 NM NW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Gravenhurst Narrows Lighthouse still active and maintained?+
Yes, Gravenhurst Narrows 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 Gravenhurst Narrows Lighthouse?+
You can track vessels near Gravenhurst Narrows 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.