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Seomang Lighthouse

Fl Red 6s🇰🇷Imhoe-myeon, KROperational

Location & Light Range

About Seomang Lighthouse

Also known as: Seomang (Somang) Hang South Breakwater (?)

Seomang Lighthouse is a 10-meter tall concrete tower with a cylindrical shape, painted red. Its focal height reaches 15 meters above sea level. The lighthouse emits a single red flash every 6 seconds. This light has a geographic range of 11.9 nautical miles. The site surrounding the lighthouse is open to visitors, though the tower itself is closed.

Why it matters: This lighthouse marks a critical section of the waterway, providing clear guidance for vessels navigating the Korean coast and helping them avoid unseen dangers.

Light & Optic

Characteristic Signature
Fl Red 6s
Flash Type
Flashing
Light Color
Red
Interval
6s
Raw Code
Fl R 6s
Focal Height
15m
Geographic Range
11.9NM

Location

City
Imhoe-myeon
Country
🇰🇷South Korea
Region
South Jeolla
Latitude
34.3651°
Longitude
126.1315°

References & Identifiers

Nearest Port
Daebul/Yeongam-gun(27.0 km)
Admiralty No.
M4246.6
NGA No.
17581

Tower & Structure

Tower Height
10m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: round cylindrical concrete tower

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 Seomang Lighthouse at night?+
Seomang displays the characteristic Fl Red 6s. 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 Seomang Lighthouse guide vessels into?+
Seomang Lighthouse assists vessels approaching 5 nearby ports. The closest is Galdoo at 19.5 NM to the ESE. Other ports served include Chuja (26.3 NM SSE), Mokpo (26.6 NM NNE), Hwahungpo (26.8 NM E), Daebul/Yeongam-gun (27.5 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Seomang Lighthouse still active and maintained?+
Yes, Seomang 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 Seomang Lighthouse?+
You can track vessels near Seomang 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.