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Three Top Island Lighthouse

Fl Green 4s🇨🇦Dover, CAOperational

Location & Light Range

About Three Top Island Lighthouse

This square skeletal steel tower stands 9.5 meters tall on Three Top Island, Nova Scotia. Painted red with a white horizontal band, it supports a lantern at a focal height of 17 meters. The lighthouse emits a single green flash every 4 seconds, visible for 12.4 nautical miles. The site is open to the public, though the tower itself is closed. Its nearest port is Canso, located 10.5 kilometers away.

Why it matters: This lighthouse is essential for local navigation, helping mariners identify their position and safely navigate the waters surrounding Three Top Island.

Light & Optic

Characteristic Signature
Fl Green 4s
Flash Type
Flashing
Light Color
Green
Interval
4s
Raw Code
Fl G 4s
Focal Height
17m
Geographic Range
12.4NM

Location

City
Dover
Country
🇨🇦Canada
Region
Nova Scotia
Sea Region
Three Top Island, Canada
Latitude
45.2081°
Longitude
-61.1595°

References & Identifiers

Nearest Port
Canso(10.5 km)

Tower & Structure

Tower Height
9.5m
Tower Shape
square
Tower Color
red with a white horizontal band
Material
steel

Structure: square skeletal tower carrying a daymark colored red with a white horizontal band

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Three Top Island Lighthouse at night?+
Three Top Island 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 Three Top Island Lighthouse guide vessels into?+
Three Top Island Lighthouse assists vessels approaching 5 nearby ports. The closest is Canso at 10.1 NM to the NE. Other ports served include Guysborough (18.4 NM NW), Arichat (19.5 NM NNE), Country Harbour (23.6 NM W), Stormont (24.3 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Three Top Island Lighthouse still active and maintained?+
Yes, Three Top Island 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 Three Top Island Lighthouse?+
You can track vessels near Three Top Island 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.