Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Thunder Bay South Entrance Lighthouse

Fl Green 5s🇨🇦Thunder Bay, CAOperational

Location & Light Range

About Thunder Bay South Entrance Lighthouse

The Thunder Bay South Entrance light is a white, 6-meter-high post structure situated on a 1-story equipment building. It is located at the end of the breakwater, marking the south side of the south entrance to Thunder Bay Harbour. This light displays a single green flash every 5 seconds. With a focal height of 8 meters, it offers a geographic range of 9.7 nautical miles. The structure is managed by the Canadian Coast Guard and is operational, serving vessels that navigate the waters near Thunder Bay.

Why it matters: This light is essential for safe navigation into and out of Thunder Bay Harbour, precisely marking the end of the breakwater for vessels using the south entrance.

Light & Optic

Characteristic Signature
Fl Green 5s
Flash Type
Flashing
Light Color
Green
Interval
5s
Raw Code
Fl G 5s
Focal Height
8m
Geographic Range
9.7NM

Location

City
Thunder Bay
Country
🇨🇦Canada
Region
Ontario
Sea Region
Thunder Bay Harbour, at the end of the breakwater on the south side of the south entrance.
Latitude
48.4108°
Longitude
-89.2052°

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(0.4 km)
Live tracking · 50,000+ mariners

Find Thunder Bay South Entrance Lighthouse on the live nautical map

Plan voyages near Canada, see nearby vessels in real time, and explore 14,900+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Thunder Bay South Entrance Lighthouse at night?+
Thunder Bay South Entrance displays the characteristic Fl Green 5s. 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 South Entrance Lighthouse guide vessels into?+
Thunder Bay South Entrance Lighthouse assists vessels approaching 5 nearby ports. The closest is Fort William at 1.3 NM to the WSW. Other ports served include Port Arthur (1.3 NM WSW), Thunder Bay (1.3 NM WSW), Grand Portage (33.5 NM SW), Red Rock (48.8 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Thunder Bay South Entrance Lighthouse still active and maintained?+
Yes, Thunder Bay South 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 South Entrance Lighthouse?+
You can track vessels near Thunder Bay South 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.