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Cheonbu Lighthouse

Fl G 4s🇰🇷Ulleungdo and Dokdo, KROperational

Location & Light Range

About Cheonbu Lighthouse

This white, round metal tower stands 26 meters tall. It is situated in Ulleungdo and Dokdo. The light is a green flash that repeats every 4 seconds. Its geographic range is 8 nautical miles.

Light & Optic

Characteristic Signature
Fl G 4s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
4s
Raw Code
Fl.G. period 4s
Focal Height
9m
Geographic Range
8NM

Location

City
Ulleungdo and Dokdo
Country
🇰🇷KR
Latitude
37.5403°
Longitude
130.8701°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
26m
Tower Shape
round
Tower Color
white
Material
metal

Structure: White round metal tower; 26

References & Identifiers

Admiralty No.
M4443
NGA No.
16536
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Frequently Asked Questions

How do mariners identify Cheonbu Lighthouse at night?+
Cheonbu displays the characteristic Fl G 4s — 1 green flash every 4 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Cheonbu Lighthouse guide vessels into?+
Cheonbu Lighthouse assists vessels approaching 1 nearby port. The closest is Ulleung at 4.6 NM to the SSE. Mariners should consult the relevant chart for full approach and pilotage information.
Is Cheonbu Lighthouse still active and maintained?+
Yes, Cheonbu 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.
What shipping routes pass near Cheonbu Lighthouse?+
Cheonbu Lighthouse is located within the Japan / Korea shipping lane — a busy shipping corridor linking the major ports of Japan and South Korea. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Cheonbu Lighthouse?+
You can track vessels near Cheonbu 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.