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Usedo Lighthouse

Fl White 4s🇰🇷Bigeum, KROperational

Location & Light Range

About Usedo Lighthouse

Also known as: Usedo (Use Do)

The Usedo lighthouse is a round white concrete tower standing 9 meters tall. It is located on an uninhabited island off the northwest corner of Bigeumdo in South Korea's South Jeolla region. The lighthouse emits a white flash every 4 seconds, with its light visible for 21.2 nautical miles. Its focal height is 68 meters above sea level. The nearest port is Mokpo, 23 kilometers away.

Why it matters: This lighthouse helps guide vessels navigating towards Wonpyong, a sheltered area on the coast of Bigeumdo.

Light & Optic

Characteristic Signature
Fl White 4s
Flash Type
Flashing
Light Color
White
Interval
4s
Raw Code
Fl W 4s
Focal Height
68m
Geographic Range
21.2NM

Location

City
Bigeum
Country
🇰🇷South Korea
Region
South Jeolla
Sea Region
uninhabited island off the northwest corner of Bigeumdo, sheltering Wonpyong, South Korea
Latitude
34.7909°
Longitude
125.9078°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
9m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round white concrete tower

References & Identifiers

Nearest Port
Mokpo(23.0 km)
Admiralty No.
M4212.5
NGA No.
17668
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Frequently Asked Questions

How do mariners identify Usedo Lighthouse at night?+
Usedo displays the characteristic Fl White 4s. 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 Usedo Lighthouse guide vessels into?+
Usedo Lighthouse assists vessels approaching 5 nearby ports. The closest is Songgong at 15.4 NM to the E. Other ports served include Mokpo (22.2 NM E), Daeheuksando (24.3 NM WSW), Daebul/Yeongam-gun (26 NM E), Hongdo (36.7 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Usedo Lighthouse still active and maintained?+
Yes, Usedo 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 Usedo Lighthouse?+
You can track vessels near Usedo 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.