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Thunder Bay North Entrance Lighthouse

Fl Green 4s🇨🇦Thunder Bay, CAOperational

Location & Light Range

About Thunder Bay North Entrance Lighthouse

This white, post-mounted lighthouse stands 6 meters tall on a 1-story equipment building at the north entrance of Thunder Bay Harbour. Its green light emits a single flash every 4 seconds, visible for 10.2 nautical miles. The focal height reaches 9.5 meters above the water. Located 2.2 kilometers from the nearest port, it marks the end of the north breakwater. This structure serves as an active aid to navigation within Thunder Bay, Ontario.

Why it matters: The Thunder Bay North Entrance light is essential for vessels entering Thunder Bay Harbour, marking the breakwater's end to prevent groundings and collisions.

Light & Optic

Characteristic Signature
Fl Green 4s
Flash Type
Flashing
Light Color
Green
Interval
4s
Raw Code
Fl G 4s
Focal Height
9.5m
Geographic Range
10.2NM

Location

City
Thunder Bay
Country
🇨🇦Canada
Region
Ontario
Sea Region
Thunder Bay Harbour, marking the north entrance breakwater.
Latitude
48.4438°
Longitude
-89.1776°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
6m
Tower Color
white

Structure: post mounted on a 1-story equipment building, painted white

References & Identifiers

Nearest Port
Thunder Bay(2.2 km)
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Frequently Asked Questions

How do mariners identify Thunder Bay North Entrance Lighthouse at night?+
Thunder Bay North Entrance 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 Thunder Bay North Entrance Lighthouse guide vessels into?+
Thunder Bay North Entrance Lighthouse assists vessels approaching 5 nearby ports. The closest is Fort William at 3.4 NM to the SW. Other ports served include Port Arthur (3.4 NM SW), Thunder Bay (3.4 NM SW), Grand Portage (35.7 NM SW), Red Rock (46.7 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Thunder Bay North Entrance Lighthouse still active and maintained?+
Yes, Thunder Bay North Entrance 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 Thunder Bay North Entrance Lighthouse?+
You can track vessels near Thunder Bay North Entrance 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.