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Chomangseo Lighthouse

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

Location & Light Range

About Chomangseo Lighthouse

Chomangseo Lighthouse, built in 2011, is a cylindrical concrete tower painted black with a single red horizontal band. The structure stands 18 meters tall and is mounted on a concrete pier. It is situated on a reef about 3 kilometers south of Oeyando. This operational lighthouse displays a white flash every 10 seconds, visible for 11.9 nautical miles. The site is accessible by boat, though the tower itself is closed to the public.

Why it matters: The lighthouse warns vessels of a submerged reef south of Oeyando, preventing groundings and ensuring safe passage.

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
15m
Geographic Range
11.9NM

Construction & History

Year Built
2011

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
18m
Tower Shape
cylindrical
Tower Color
black with one red horizontal band
Material
concrete

Structure: round cylindrical concrete tower, mounted on a round concrete pier

Location

City
Boryeong-si
Country
🇰🇷South Korea
Region
South Chungcheong
Sea Region
a reef about 3 km south of Oeyando
Latitude
36.2014°
Longitude
126.0892°

References & Identifiers

Nearest Port
Boryeong(22.5 km)
Admiralty No.
M4189.59.
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Frequently Asked Questions

How do mariners identify Chomangseo Lighthouse at night?+
Chomangseo 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 Chomangseo Lighthouse guide vessels into?+
Chomangseo Lighthouse assists vessels approaching 5 nearby ports. The closest is Biin at 19.8 NM to the ESE. Other ports served include Daecheon (21.1 NM ENE), Boryeong (22.2 NM ENE), Gunsan (27.5 NM ESE), Janghang/Seocheon-gun (31.2 NM ESE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Chomangseo Lighthouse still active and maintained?+
Yes, Chomangseo 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 Chomangseo Lighthouse?+
You can track vessels near Chomangseo 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.