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Ulmido Lighthouse

Fl White 6s🇰🇷KROperational

Location & Light Range

About Ulmido Lighthouse

Ulmido Lighthouse stands on a small island approximately 10 kilometers west of the Taean harbor entrance. This cylindrical, white concrete tower stands 12 meters tall, with its light positioned 71 meters above sea level. The geographic range of its white light, which flashes once every 6 seconds, extends for 21.5 nautical miles. The lighthouse structure is a round white concrete tower. While the site is open to visitors, the tower itself is closed to the public. The nearest port is Boryeong, located 17.8 kilometers away.

Why it matters: This lighthouse serves as a navigational reference for vessels approaching Taean harbor, guiding ships through the coastal waters of South Korea.

Light & Optic

Characteristic Signature
Fl White 6s
Flash Type
Flashing
Light Color
White
Interval
6s
Raw Code
Fl W 6s
Focal Height
71m
Geographic Range
21.5NM

Location

Country
🇰🇷South Korea
Region
South Chungcheong
Sea Region
small island about 10 km west of the entrance to Taean harbor
Latitude
36.5945°
Longitude
126.1986°

References & Identifiers

Nearest Port
Boryeong(17.8 km)
Admiralty No.
M4184.35.

Tower & Structure

Tower Height
12m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round white 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 Ulmido Lighthouse at night?+
Ulmido displays the characteristic Fl White 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Ulmido Lighthouse guide vessels into?+
Ulmido Lighthouse assists vessels approaching 5 nearby ports. The closest is Boryeong at 17.9 NM to the SE. Other ports served include Taean-gun (19.5 NM N), Daecheon (22.1 NM SE), Daesan/Seosan (26.8 NM NNE), DANGJIN (31.8 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ulmido Lighthouse still active and maintained?+
Yes, Ulmido 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 Ulmido Lighthouse?+
You can track vessels near Ulmido 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.