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Sokyeo Lighthouse

Fl (2) White 5s🇰🇷Dangjin-si, KROperational

Location & Light Range

About Sokyeo Lighthouse

The Sokyeo Lighthouse is a 12-meter concrete tower constructed with a black exterior and a single red horizontal band. It stands on a reef approximately 400 meters north of Bigyeondo, a location within South Korea's South Chungcheong region. The lighthouse emits a white light that flashes once every five seconds. Its focal height reaches 14.9 meters, providing a geographic range of 11.9 nautical miles. The site is accessible by boat, though the tower itself is closed to the public.

Why it matters: This lighthouse is essential for marking a reef north of Bigyeondo, offering critical navigational guidance for local maritime traffic in this area.

Light & Optic

Characteristic Signature
Fl (2) White 5s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
5s
Raw Code
Fl W 5s
Focal Height
14.9352m
Geographic Range
11.9NM

Location

City
Dangjin-si
Country
🇰🇷South Korea
Region
South Chungcheong
Sea Region
a reef about 400 m north of Bigyeondo, South Korea
Latitude
37.0299°
Longitude
126.4216°

References & Identifiers

Nearest Port
Daesan(2.2 km)
Admiralty No.
M4156.95.
NGA No.
KR-3328.19

Tower & Structure

Tower Height
12m
Tower Color
black with one red horizontal band
Material
concrete

Structure: 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 Sokyeo Lighthouse at night?+
Sokyeo displays the characteristic Fl (2) White 5s — 2 white flashes every 5 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 Sokyeo Lighthouse guide vessels into?+
Sokyeo Lighthouse assists vessels approaching 5 nearby ports. The closest is Daesan/Seosan at 2.1 NM to the WSW. Other ports served include DANGJIN (4.6 NM ENE), Taean-gun (11.1 NM SW), Dangjin (17.8 NM ESE), Pyeongtaek (18.4 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Sokyeo Lighthouse still active and maintained?+
Yes, Sokyeo 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 Sokyeo Lighthouse?+
You can track vessels near Sokyeo 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.