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Heukdo Lighthouse

Fl (2) White 10s🇰🇷Gunsan-si, KROperational

Location & Light Range

About Heukdo Lighthouse

Also known as: Heukdo (Heukseo)

This cylindrical concrete tower stands 15 meters tall and features a black exterior with a single red horizontal band. The lighthouse's focal plane is 19 meters above the water, and it emits a white flash every 10 seconds, visible for nearly 13 nautical miles. It is situated on a reef about 450 meters north of Gwallido. The site is accessible to the public, though the tower itself is closed. Its nearest port is Gunsan, located 13.5 kilometers away.

Why it matters: Heukdo lighthouse marks a reef hazard north of Gwallido, providing a distinct navigational reference for local fishing fleets and other maritime traffic in this section of the coast.

Light & Optic

Characteristic Signature
Fl (2) White 10s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
10s
Raw Code
Fl W 10s
Focal Height
19m
Geographic Range
12.9NM

Location

City
Gunsan-si
Country
🇰🇷South Korea
Region
Jeonbuk State
Sea Region
on a reef about 450 m north of Gwallido
Latitude
35.8113°
Longitude
126.3957°

References & Identifiers

Nearest Port
Gunsan(13.5 km)
Admiralty No.
M4206.33
NGA No.
17753.1

Tower & Structure

Tower Height
15m
Tower Shape
cylindrical
Tower Color
black with one red horizontal band
Material
concrete

Structure: round concrete tower, painted black with one red 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 Heukdo Lighthouse at night?+
Heukdo displays the characteristic Fl (2) White 10s — 2 white flashes every 10 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Heukdo Lighthouse guide vessels into?+
Heukdo Lighthouse assists vessels approaching 5 nearby ports. The closest is Gunsan at 13.6 NM to the NE. Other ports served include Sangwangdeungdo (16 NM SW), Janghang/Seocheon-gun (18.4 NM NE), Biin (18.8 NM NNE), Daecheon (30.8 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Heukdo Lighthouse still active and maintained?+
Yes, Heukdo 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 Heukdo Lighthouse?+
You can track vessels near Heukdo 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.