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Nosy Ankao Lighthouse

Fl W 20s🇲🇬Madagascar, MGOperational

Location & Light Range

About Nosy Ankao Lighthouse

This white octagonal tower, topped with black, stands 66 meters tall. Its focal plane is 46 meters above sea level. The light emits four white flashes every 20 seconds, providing a geographic range of 19 nautical miles. The lighthouse structure itself is notable for its distinct octagonal shape and contrasting color scheme.

Light & Optic

Characteristic Signature
Fl W 20s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
20s
Raw Code
Fl.(4)W. period 20s
Focal Height
46m
Geographic Range
19NM

Location

City
Madagascar
Country
🇲🇬MG
Latitude
-12.8087°
Longitude
49.8317°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
66m
Tower Shape
octagonal
Tower Color
white and black

Structure: White octagonal tower, black top; 66

References & Identifiers

Admiralty No.
D6930
NGA No.
32364
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Frequently Asked Questions

How do mariners identify Nosy Ankao Lighthouse at night?+
Nosy Ankao displays the characteristic Fl W 20s — 1 white flash every 20 seconds. 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.
Which ports and harbors does Nosy Ankao Lighthouse guide vessels into?+
Nosy Ankao Lighthouse assists vessels approaching 2 nearby ports. The closest is VOHEMAR at 34.3 NM to the SSE. Other ports served include Antsiranana (45.2 NM NW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Nosy Ankao Lighthouse still active and maintained?+
Yes, Nosy Ankao 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 Nosy Ankao Lighthouse?+
You can track vessels near Nosy Ankao 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.