Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Dalseo Lighthouse

Fl (2) White 6s🇰🇷Jeju, KROperational

Location & Light Range

About Dalseo Lighthouse

Also known as: Dalseo (Talseo, Talso)

This octagonal white concrete tower stands 10 meters tall on the Dalseo reef, with its light positioned 14 meters above sea level. Visible for 11.6 nautical miles, it emits a white flash every 6 seconds. Located near Jeju city, it is situated 7.4 kilometers from the nearest port. The lighthouse serves as an active aid to navigation within this sea region. Access to the structure is restricted to vessels.

Why it matters: The lighthouse marks the Dalseo reef, an underwater hazard, aiding vessels in navigating these waters and preventing groundings.

Light & Optic

Characteristic Signature
Fl (2) White 6s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
6s
Raw Code
Fl W 6s
Focal Height
14m
Geographic Range
11.6NM

Location

City
Jeju
Country
🇰🇷South Korea
Region
Jeju
Sea Region
Dalseo reef
Latitude
33.5555°
Longitude
126.6957°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
10m
Tower Shape
octagonal
Tower Color
white
Material
concrete

Structure: octagonal white concrete tower

References & Identifiers

Nearest Port
Jeju(7.4 km)
Admiralty No.
M4269.5
NGA No.
17400
Live tracking · 50,000+ mariners

Find Dalseo Lighthouse on the live nautical map

Plan voyages near South Korea, see nearby vessels in real time, and explore 14,900+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Dalseo Lighthouse at night?+
Dalseo displays the characteristic Fl (2) White 6s — 2 white flashes every 6 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 Dalseo Lighthouse guide vessels into?+
Dalseo Lighthouse assists vessels approaching 5 nearby ports. The closest is Jeju at 7.1 NM to the WSW. Other ports served include Kwangyang (8.8 NM WSW), Seongsan-po (12.7 NM ESE), NAMWON (16.8 NM S), Aewol (20 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Dalseo Lighthouse still active and maintained?+
Yes, Dalseo 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 Dalseo Lighthouse?+
You can track vessels near Dalseo 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.