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Donghangseo Lighthouse

Fl (2) Red 6s🇰🇷KROperational

Location & Light Range

About Donghangseo Lighthouse

This concrete lighthouse, built in 2010, stands 8 meters tall with a focal height of 11 meters. The cylindrical, octagonal tower is painted red and emits a single red flash every 6 seconds, visible for 10.7 nautical miles. Located on a reef south of the channel between Changseongdo and Namhaedo, it lies halfway between Dangjeo Hang and Jang Got. The lighthouse site is accessible by boat, though the tower itself is closed to the public. Its nearest port is Samcheonpo/Sacheon, 5.4 kilometers away.

Why it matters: This structure guides vessels through the channel between Changseongdo and Namhaedo, specifically marking a reef for local shipping and fishing traffic.

Light & Optic

Characteristic Signature
Fl (2) Red 6s
Flash Type
Flashing
Light Color
Red
Flash Count
2 flashes
Interval
6s
Raw Code
Fl R 6s
Focal Height
11m
Geographic Range
10.7NM

Construction & History

Year Built
2010

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
8m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: octagonal cylindrical concrete tower

Location

Country
🇰🇷South Korea
Region
South Gyeongsang
Sea Region
a reef on the south side of the channel between Changseongdo and Namhaedo, halfway between Dangjeo Hang and Jang Got, South Korea
Latitude
34.8316°
Longitude
128.0414°

References & Identifiers

Nearest Port
Samcheonpo/Sacheon(5.4 km)
Admiralty No.
M4321.64.
NGA No.
17018
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Frequently Asked Questions

How do mariners identify Donghangseo Lighthouse at night?+
Donghangseo displays the characteristic Fl (2) Red 6s — 2 red 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 red color may indicate a specific sector or warning zone.
Which ports and harbors does Donghangseo Lighthouse guide vessels into?+
Donghangseo Lighthouse assists vessels approaching 5 nearby ports. The closest is Samcheonpo/Sacheon at 5.3 NM to the NNE. Other ports served include Samil (12.9 NM W), GOSEONG (15.6 NM ENE), Gwangyang (16.2 NM WNW), Junghwa (16.3 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Donghangseo Lighthouse still active and maintained?+
Yes, Donghangseo 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 Donghangseo Lighthouse?+
Donghangseo 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 Donghangseo Lighthouse?+
You can track vessels near Donghangseo 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.