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Seogeunnyeo Lighthouse

Fl (6) White 15s🇰🇷Gunsan-si, KROperational

Location & Light Range

About Seogeunnyeo Lighthouse

Constructed in 2003, the Seogeunnyeo Lighthouse is a cylindrical concrete tower measuring 19 meters in height. The structure is painted with its upper section yellow and its lower section black. Its lamp, set at a height of 15 meters, produces a white flash every 15 seconds. This light has a geographic range of 11.9 nautical miles. The lighthouse is situated near Gunsan-si in South Korea's Jeonbuk State. Visitors can access the site, but the tower itself remains closed.

Why it matters: This navigation aid marks the entry to channels and surrounding islands within the Gogunsan Archipelago.

Light & Optic

Characteristic Signature
Fl (6) White 15s
Flash Type
Flashing
Light Color
White
Flash Count
6 flashes
Interval
15s
Raw Code
Fl W 15s
Focal Height
15m
Geographic Range
11.9NM

Construction & History

Year Built
2003

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
19m
Tower Shape
cylindrical
Tower Color
upper half yellow, lower half black
Material
concrete

Structure: round cylindrical concrete tower; upper half of the tower painted yellow, lower half black

Location

City
Gunsan-si
Country
🇰🇷South Korea
Region
Jeonbuk State
Sea Region
just off the southern tip of Munyeodo, South Korea
Latitude
35.8042°
Longitude
126.4109°

References & Identifiers

Nearest Port
Gunsan(13.4 km)
Admiralty No.
M4206.363.
NGA No.
M4206.363
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Frequently Asked Questions

How do mariners identify Seogeunnyeo Lighthouse at night?+
Seogeunnyeo displays the characteristic Fl (6) White 15s — 6 white flashes every 15 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 Seogeunnyeo Lighthouse guide vessels into?+
Seogeunnyeo Lighthouse assists vessels approaching 5 nearby ports. The closest is Gunsan at 13.5 NM to the NE. Other ports served include Sangwangdeungdo (16.4 NM SW), Janghang/Seocheon-gun (18.1 NM NE), Biin (19.1 NM N), Daecheon (31.1 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Seogeunnyeo Lighthouse still active and maintained?+
Yes, Seogeunnyeo 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 Seogeunnyeo Lighthouse?+
You can track vessels near Seogeunnyeo 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.