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Île de Grâce Range Front Lighthouse

F Green 2s🇨🇦Sainte-Anne-de-Sorel, CAOperational

Location & Light Range

About Île de Grâce Range Front Lighthouse

The Île de Grâce Range Front light stands at the southwest end of Île de Grâce, marking a downstream range in the upper Lac St.-Pierre basin. This square pyramidal wood tower, constructed in 1928, stands 9 meters tall and is painted white with red trim. It replaced a single lighthouse built in 1871. The light emits a continuous green signal, visible for 11.3 nautical miles along the precise range line. An additional green passing light also operates. The site is open to the public, though the tower is closed.

Why it matters: This range front light is indispensable for safe navigation through the Lac St.-Pierre basin, a critical segment of the St. Lawrence Seaway. Its precisely aligned continuous green light ensures ships stay within the designated downstream channel.

Light & Optic

Characteristic Signature
F Green 2s
Flash Type
Fixed
Light Color
Green
Interval
2s
Raw Code
F G
Focal Height
13m
Geographic Range
11.3NM

Construction & History

Year Built
1928

Significant events: Replacement of a single lighthouse built in 1871

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
9m
Tower Shape
square
Tower Color
white with red trim
Material
wood

Structure: square pyramidal wood tower, painted white with red trim

Location

City
Sainte-Anne-de-Sorel
Country
🇨🇦Canada
Region
Quebec
Sea Region
Île de Grâce, at the upper (southwest) end of the island, marking a downstream range at the upper end of the Lac St.-Pierre basin, approximately 10 km northeast of Sorel
Latitude
46.0690°
Longitude
-73.0503°

References & Identifiers

Nearest Port
Sorel(3.3 km)
Admiralty No.
H2426
NGA No.
5104
ARLHS No.
CAN-1095
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Frequently Asked Questions

How do mariners identify Île de Grâce Range Front Lighthouse at night?+
Île de Grâce Range Front displays the characteristic F Green 2s. 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Île de Grâce Range Front Lighthouse guide vessels into?+
Île de Grâce Range Front Lighthouse assists vessels approaching 5 nearby ports. The closest is Sorel at 3 NM to the WSW. Other ports served include Sorel-Tracy (3 NM WSW), Sainte-Victoire-de-Sorel (6.4 NM SW), Saint-François-du-Lac (9 NM E), Contrecoeur (12.8 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Île de Grâce Range Front Lighthouse still active and maintained?+
Yes, Île de Grâce Range Front 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 Île de Grâce Range Front Lighthouse?+
You can track vessels near Île de Grâce Range Front 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.