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Gunsan Janseo Lighthouse

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

Location & Light Range

About Gunsan Janseo Lighthouse

Gunsan Janseo Lighthouse stands as a cylindrical concrete tower, 15 meters in height, situated on a reef approximately 1 kilometer southeast of Gaeyado. The structure is painted black with a single red horizontal band, and its focal plane is 12 meters above sea level. This active light emits one white flash every 5 seconds, offering a geographic range of 11 nautical miles. The lighthouse is located in the Jeonbuk State region of South Korea, near the city of Gunsan-si. Although visitors cannot enter the tower, it serves as a navigational marker for vessels operating in the area.

Why it matters: This lighthouse marks a reef southeast of Gaeyado, assisting local shipping and fishing vessels by preventing groundings. Its distinctive black and red coloring aids in immediate identification by mariners.

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
12m
Geographic Range
11NM

Location

City
Gunsan-si
Country
🇰🇷South Korea
Region
Jeonbuk State
Sea Region
a reef about 1 km southeast of Gaeyado, South Korea
Latitude
36.0261°
Longitude
126.5580°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
15m
Tower Shape
cylindrical
Tower Color
black with one red horizontal band
Material
concrete

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

References & Identifiers

Nearest Port
Gunsan(2.3 km)
Admiralty No.
M4190.7.
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Frequently Asked Questions

How do mariners identify Gunsan Janseo Lighthouse at night?+
Gunsan Janseo 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 Gunsan Janseo Lighthouse guide vessels into?+
Gunsan Janseo Lighthouse assists vessels approaching 5 nearby ports. The closest is Gunsan at 3.1 NM to the SSE. Other ports served include Janghang/Seocheon-gun (6.4 NM E), Biin (6.5 NM NNW), Daecheon (17.7 NM N), Boryeong (22.7 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Gunsan Janseo Lighthouse still active and maintained?+
Yes, Gunsan Janseo 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 Gunsan Janseo Lighthouse?+
You can track vessels near Gunsan Janseo 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.