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Sebaeyeo Lighthouse

Fl Red 6s🇰🇷Jeju, KROperational

Location & Light Range

About Sebaeyeo Lighthouse

This red cylindrical concrete tower stands 16 meters tall, with its focal height at 13 meters above sea level. The tower's upper half is painted black, and the lower half is yellow. It emits a single red flash every 6 seconds, visible for 11.3 nautical miles. Sebaeyeo is situated on a reef about 500 meters north of the Iho harbor entrance, near Jeju city. The lighthouse site is accessible, but the tower itself is closed to the public. The structure was built to mark a submerged reef.

Why it matters: This lighthouse is essential for safely navigating the approach to Iho harbor and warns vessels of the submerged reef it marks.

Light & Optic

Characteristic Signature
Fl Red 6s
Flash Type
Flashing
Light Color
Red
Interval
6s
Raw Code
Fl R 6s
Focal Height
13m
Geographic Range
11.3NM

Location

City
Jeju
Country
🇰🇷South Korea
Region
Jeju
Sea Region
reef about 500 m north of the Iho harbor entrance
Latitude
33.5018°
Longitude
126.4520°

References & Identifiers

Nearest Port
Jeju(5.3 km)
Admiralty No.
M4265.65
NGA No.
17374

Tower & Structure

Tower Height
16m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: round cylindrical concrete tower, upper half painted black, lower half yellow

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 Sebaeyeo Lighthouse at night?+
Sebaeyeo displays the characteristic Fl Red 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 red color may indicate a specific sector or warning zone.
Which ports and harbors does Sebaeyeo Lighthouse guide vessels into?+
Sebaeyeo Lighthouse assists vessels approaching 5 nearby ports. The closest is Kwangyang at 4.1 NM to the E. Other ports served include Jeju (5.5 NM ENE), Aewol (7.5 NM WSW), Hallim (11.3 NM WSW), Seogwipo (16.9 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Sebaeyeo Lighthouse still active and maintained?+
Yes, Sebaeyeo 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 Sebaeyeo Lighthouse?+
You can track vessels near Sebaeyeo 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.