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Udo Northeast Lighthouse

Fl (3) White 10s🇰🇷Jeju, KROperational

Location & Light Range

About Udo Northeast Lighthouse

Also known as: Udo Northeast (Biyangdo, Piyangdo)

This cylindrical concrete tower stands 13 meters tall and has a focal height of 14 meters. It is painted black with a single yellow horizontal band. The Udo Northeast Lighthouse emits a white flash every 10 seconds, visible for 11.6 nautical miles. It is situated on a tiny island off the northeastern coast of Udo, near the city of Jeju. The lighthouse is a concrete structure with a gallery and is accessible via a causeway from the main island.

Why it matters: Its distinctive banding aids identification for mariners navigating the waters around Udo, an island frequented by tourists and fishing vessels. The gallery offers visitors a unique vantage point of the coastal environment.

Light & Optic

Characteristic Signature
Fl (3) White 10s
Flash Type
Flashing
Light Color
White
Flash Count
3 flashes
Interval
10s
Raw Code
Fl W 10s
Focal Height
14m
Geographic Range
11.6NM

Location

City
Jeju
Country
🇰🇷South Korea
Region
Jeju
Sea Region
tiny island off the northeastern coast of Udo
Latitude
33.5150°
Longitude
126.9698°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
13m
Tower Shape
cylindrical
Tower Color
black with one yellow horizontal band
Material
concrete

Structure: round cylindrical concrete tower with gallery, painted black with one yellow horizontal band

References & Identifiers

Nearest Port
Seongsan-po(3.0 km)
Admiralty No.
M4272.2
NGA No.
17416
USCG No.
KR-2617
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Frequently Asked Questions

How do mariners identify Udo Northeast Lighthouse at night?+
Udo Northeast displays the characteristic Fl (3) White 10s — 3 white flashes every 10 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 Udo Northeast Lighthouse guide vessels into?+
Udo Northeast Lighthouse assists vessels approaching 5 nearby ports. The closest is Seongsan-po at 3.2 NM to the SW. Other ports served include NAMWON (19 NM SW), Jeju (20.6 NM W), Kwangyang (21.9 NM W), Seogwipo (26.1 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Udo Northeast Lighthouse still active and maintained?+
Yes, Udo Northeast 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 Udo Northeast Lighthouse?+
You can track vessels near Udo Northeast 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.