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Gwido Lighthouse

Fl Green 5s🇰🇷KROperational

Location & Light Range

About Gwido Lighthouse

Also known as: Gwido (Gudo, Kudo)

Gwido Lighthouse is a white cylindrical concrete tower standing 14 meters tall. Located on a reef approximately 8 kilometers north of Taean harbor, its focal height reaches 16 meters above sea level. This active light emits a single green flash every 5 seconds, visible for 12.2 nautical miles. The structure is described as a round green concrete tower. While the site is open to visitors, the tower itself is closed to the public. The nearest port is Taean-gun, located 1.8 kilometers away.

Why it matters: This lighthouse is essential for mariners approaching or departing Taean harbor, warning them of the reef it marks. Its green flash provides a distinct navigational aid in these coastal waters.

Light & Optic

Characteristic Signature
Fl Green 5s
Flash Type
Flashing
Light Color
Green
Interval
5s
Raw Code
Fl G 5s
Focal Height
16m
Geographic Range
12.2NM

Location

Country
🇰🇷South Korea
Region
South Chungcheong
Sea Region
a reef about 8 km north of Taean harbor
Latitude
36.9025°
Longitude
126.2067°

References & Identifiers

Nearest Port
Taean-gun(1.8 km)
Admiralty No.
M4156.38
NGA No.
17863.5

Tower & Structure

Tower Height
14m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round green 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 Gwido Lighthouse at night?+
Gwido displays the characteristic Fl Green 5s. 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Gwido Lighthouse guide vessels into?+
Gwido Lighthouse assists vessels approaching 5 nearby ports. The closest is Taean-gun at 1.8 NM to the ENE. Other ports served include Daesan/Seosan (10.8 NM NE), DANGJIN (17.4 NM ENE), Dangjin (27.9 NM E), Pyeongtaek (29.1 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Gwido Lighthouse still active and maintained?+
Yes, Gwido 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 Gwido Lighthouse?+
You can track vessels near Gwido 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.