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Chennai Harbour Outer Arm Lighthouse

Fl (2) Red 6s🇮🇳INOperational

Location & Light Range

About Chennai Harbour Outer Arm Lighthouse

This cylindrical tower, standing 10 meters tall, is situated at the extremity of the main breakwater for Chennai harbor. Its focal plane is 13 meters above sea level, emitting a red light that flashes once every 6 seconds. With a geographic range of 11.3 nautical miles, it guides mariners approaching the port. The structure is a square cylindrical tower, located just 0.5 kilometers from the city of Chennai. It is an active aid to navigation in this busy maritime area.

Why it matters: This light is essential for the safe passage of commercial and fishing vessels entering and exiting Chennai Harbour, warning mariners of the physical end of the main breakwater.

Light & Optic

Characteristic Signature
Fl (2) Red 6s
Flash Type
Flashing
Light Color
Red
Flash Count
2 flashes
Interval
6s
Raw Code
Fl R 6s
Focal Height
13m
Geographic Range
11.3NM

Location

Country
🇮🇳India
Sea Region
end of the main breakwater of Chennai harbor, India
Latitude
13.1073°
Longitude
80.3097°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
10m
Tower Shape
cylindrical

Structure: square cylindrical tower

References & Identifiers

Nearest Port
Chennai (ex Madras)(0.5 km)
Admiralty No.
F0942
NGA No.
27080
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Frequently Asked Questions

How do mariners identify Chennai Harbour Outer Arm Lighthouse at night?+
Chennai Harbour Outer Arm displays the characteristic Fl (2) Red 6s — 2 red flashes every 6 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. The red color may indicate a specific sector or warning zone.
Which ports and harbors does Chennai Harbour Outer Arm Lighthouse guide vessels into?+
Chennai Harbour Outer Arm Lighthouse assists vessels approaching 5 nearby ports. The closest is Chennai (ex Madras) at 0.6 NM to the W. Other ports served include Ennore (9.6 NM NNE), Kattupalli (12.2 NM NNE), Kattupalli Port (12.3 NM NNE), Attur (30.8 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Chennai Harbour Outer Arm Lighthouse still active and maintained?+
Yes, Chennai Harbour Outer Arm 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 Chennai Harbour Outer Arm Lighthouse?+
You can track vessels near Chennai Harbour Outer Arm 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.