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Prescott Lighthouse

Fl Green 4s🇨🇦CAOperational

Location & Light Range

About Prescott Lighthouse

Also known as: Prescott (Prescott Rotary)

The Prescott Lighthouse, built in 1989, stands 12 meters tall on the Canadian side of the St. Lawrence River near Prescott, Ontario. It features an octagonal wood tower, painted white, with a red lantern and gallery. The light emits a single green flash every 4 seconds, visible for 10 nautical miles. This structure replaced older aids to navigation to improve safety in this busy waterway. Access to the grounds is permitted, but the tower itself is closed to the public.

Why it matters: The lighthouse aids vessels navigating the channels of the St. Lawrence River, a significant international shipping route.

Light & Optic

Characteristic Signature
Fl Green 4s
Flash Type
Flashing
Light Color
Green
Interval
4s
Raw Code
Fl G 4s
Focal Height
9m
Geographic Range
10NM

Construction & History

Year Built
1989

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
12m
Tower Shape
octagonal
Tower Color
white
Material
wood

Structure: octagonal wood tower with lantern and gallery, painted white; lantern is red

Location

Country
🇨🇦Canada
Region
Ontario
Sea Region
Located on the Canadian side of the St. Lawrence River near Prescott, Ontario, marking a vital shipping lane.
Latitude
44.7100°
Longitude
-75.5115°

References & Identifiers

Nearest Port
Prescott(0.2 km)
Admiralty No.
H2748
USCG No.
7-1075
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Frequently Asked Questions

How do mariners identify Prescott Lighthouse at night?+
Prescott displays the characteristic Fl Green 4s. 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 Prescott Lighthouse guide vessels into?+
Prescott Lighthouse assists vessels approaching 5 nearby ports. The closest is Prescott at 0.2 NM to the SSW. Other ports served include Ogdensburg (1.1 NM ESE), JOHNSTOWN (2.2 NM NE), Cardinal (7 NM NE), Morristown (9.5 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Prescott Lighthouse still active and maintained?+
Yes, Prescott 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 Prescott Lighthouse?+
You can track vessels near Prescott 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.