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Donghaedaejin South Breakwater Lighthouse

Fl (2) Green 6s🇰🇷Donghae-si, KROperational

Location & Light Range

About Donghaedaejin South Breakwater Lighthouse

This cylindrical concrete tower stands 6 meters tall, with its light positioned 9 meters above the water. Painted white, the structure guides vessels entering Donghaedaejin harbor in South Korea's Gangwon State. It emits a green flash every 6 seconds, visible for 10 nautical miles. The light is situated on the north breakwater of Donghaedaejin harbor, near the port of Mukho. The site is open to the public, though access to the tower is restricted.

Why it matters: The light's green signal clearly marks the safe channel into Donghaedaejin harbor, preventing groundings and collisions with the breakwater. It supports the continuous flow of local fishing and commercial traffic.

Light & Optic

Characteristic Signature
Fl (2) Green 6s
Flash Type
Flashing
Light Color
Green
Flash Count
2 flashes
Interval
6s
Raw Code
Fl G 6s
Focal Height
9m
Geographic Range
10NM

Location

City
Donghae-si
Country
🇰🇷South Korea
Region
Gangwon State
Sea Region
Donghaedaejin harbor, on the north breakwater
Latitude
37.5801°
Longitude
129.1131°

References & Identifiers

Nearest Port
Mukho(0.3 km)
Admiralty No.
M4449.06
NGA No.
16455.1

Tower & Structure

Tower Height
6m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: bulbous round concrete tower painted white

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 Donghaedaejin South Breakwater Lighthouse at night?+
Donghaedaejin South Breakwater displays the characteristic Fl (2) Green 6s — 2 green 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Donghaedaejin South Breakwater Lighthouse guide vessels into?+
Donghaedaejin South Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Mukho/Donghae at 2.1 NM to the S. Other ports served include Tonghae (2.9 NM SSW), Okgye/Gangneung (3.7 NM NW), Bupyong/Incheon (4.9 NM SSE), Donghae (5.3 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Donghaedaejin South Breakwater Lighthouse still active and maintained?+
Yes, Donghaedaejin South Breakwater 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 Donghaedaejin South Breakwater Lighthouse?+
Donghaedaejin South Breakwater 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 Donghaedaejin South Breakwater Lighthouse?+
You can track vessels near Donghaedaejin South Breakwater 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.