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Dorval Course Range Rear Lighthouse

F Green🇨🇦Dorval, CAOperational

Location & Light Range

About Dorval Course Range Rear Lighthouse

This cylindrical steel tower, standing 24 meters tall, is painted orange with a black vertical stripe. It is mounted on a round concrete pier that includes a gallery. The light is green and displays a continuous green signal. This structure is located in the St. Lawrence River, about 800 meters northwest of the Dixie Range Front Light. It serves as the rear marker for a downstream range, guiding vessels approaching Montréal on the St. Lawrence Seaway. Access to the site is by boat only, and while visitors are welcome, the tower itself is closed to the public.

Why it matters: This range light is indispensable for safe passage on the St. Lawrence Seaway, directing large vessels through a critical downstream approach to Montréal. Its continuous green light ensures ships maintain the correct course in a heavily trafficked waterway.

Light & Optic

Characteristic Signature
F Green
Flash Type
Fixed
Light Color
Green
Raw Code
F G
Focal Height
24m
Geographic Range
14.1NM

Location

City
Dorval
Country
🇨🇦Canada
Region
Quebec
Sea Region
St. Lawrence River, marking a downstream range for vessels approaching Montréal on the St. Lawrence Seaway, located about 800 m northwest of the Dixie Range Front Light.
Latitude
45.4260°
Longitude
-73.7509°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
24m
Tower Shape
cylindrical
Tower Color
orange with a black vertical stripe
Material
concrete, steel

Structure: round steel tower carrying a daymark colored orange with a black vertical stripe and mounted on a round concrete pier with gallery

References & Identifiers

Nearest Port
Sainte-catherine(6.7 km)
Admiralty No.
H2517.11
NGA No.
5708
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Frequently Asked Questions

How do mariners identify Dorval Course Range Rear Lighthouse at night?+
Dorval Course Range Rear displays the characteristic F Green. 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 Dorval Course Range Rear Lighthouse guide vessels into?+
Dorval Course Range Rear Lighthouse assists vessels approaching 5 nearby ports. The closest is DORVAL at 0.5 NM to the N. Other ports served include KAHNAWAKE (2.1 NM ESE), CHATEAUGUAY (2.9 NM S), Saint-Bernard (2.9 NM S), Pointe-Claire (3 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Dorval Course Range Rear Lighthouse still active and maintained?+
Yes, Dorval Course Range Rear 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 Dorval Course Range Rear Lighthouse?+
You can track vessels near Dorval Course Range Rear 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.