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Helen Mar Reef Lighthouse

Fl W 6s🇸🇬Riau Islands, SGOperational

Location & Light Range

About Helen Mar Reef Lighthouse

This navigational aid on Helen Mar Reef stands 16 meters tall. The structure is painted yellow with a black top. It displays a white light, flashing once every 6 seconds. A radar reflector is fitted to the beacon. It also carries a RACON M(– –) signal.

Light & Optic

Characteristic Signature
Fl W 6s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
6s
Raw Code
Fl.W. period 6s
Focal Height
16m
Geographic Range
13NM

Location

City
Riau Islands
Country
🇸🇬SG
Latitude
1.1239°
Longitude
103.7751°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Color
black and yellow

Structure: N. CARDINAL (IALA A) Yellow beacon, black top. Radar reflector. RACON M(– –)

References & Identifiers

Admiralty No.
F1694.7
NGA No.
21476
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Frequently Asked Questions

How do mariners identify Helen Mar Reef Lighthouse at night?+
Helen Mar Reef displays the characteristic Fl W 6s — 1 white flash 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.
Which ports and harbors does Helen Mar Reef Lighthouse guide vessels into?+
Helen Mar Reef Lighthouse assists vessels approaching 5 nearby ports. The closest is Pulau Sebarok at 4.8 NM to the NNE. Other ports served include Pulau Bukom (6.6 NM N), Pulau Sambu, Riau (7.6 NM ENE), Batam (7.8 NM ESE), Singapore (8.2 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Helen Mar Reef Lighthouse still active and maintained?+
Yes, Helen Mar Reef 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.
What shipping routes pass near Helen Mar Reef Lighthouse?+
Helen Mar Reef Lighthouse is located within the Strait of Malacca — the primary shipping route between the Indian and Pacific Oceans, carrying over 25% of global traded goods. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Helen Mar Reef Lighthouse?+
You can track vessels near Helen Mar Reef 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.