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Golseo Lighthouse

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

Location & Light Range

About Golseo Lighthouse

This concrete lighthouse, built in 2002, stands 22 meters tall and is painted black with a single red horizontal band. Its focal plane is 19 meters above the water. The light emits a white flash every 5 seconds, visible for 12.9 nautical miles. Located on a reef positioned between the northern tips of Gwallido and Daejangdo, it marks this hazard for mariners. While the site is accessible to the public, the tower itself is closed.

Why it matters: Golseo Lighthouse warns vessels of the reef it marks, aiding safe passage between Gwallido and Daejangdo.

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
19m
Geographic Range
12.9NM

Construction & History

Year Built
2002

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
22m
Tower Shape
cylindrical
Tower Color
black with one red horizontal band
Material
concrete

Structure: round concrete tower, painted black with one red horizontal band

Location

City
Gunsan-si
Country
🇰🇷South Korea
Region
Jeonbuk State
Sea Region
reef about halfway between the northern tips of Gwallido and Daejangdo, South Korea
Latitude
35.8113°
Longitude
126.3957°

References & Identifiers

Nearest Port
Gunsan(13.5 km)
Admiralty No.
M4206.32
NGA No.
17753
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Frequently Asked Questions

How do mariners identify Golseo Lighthouse at night?+
Golseo 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 Golseo Lighthouse guide vessels into?+
Golseo 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 Golseo Lighthouse still active and maintained?+
Yes, Golseo 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 Golseo Lighthouse?+
You can track vessels near Golseo 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.