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Mukho South Groyne Lighthouse

Fl Green 4s🇰🇷Donghae-si, KROperational

Location & Light Range

About Mukho South Groyne Lighthouse

This cylindrical concrete tower, painted white, stands 11 meters tall at the end of a south groin breakwater. It is situated approximately 350 meters south of the older West Breakwater and has a focal height of 14 meters. The lighthouse emits a green flash every 4 seconds, visible for 11.6 nautical miles. Constructed from concrete, the round tower is part of the maritime infrastructure near the port of Tonghae. The site is open to the public, though the tower itself is closed to visitors.

Why it matters: The lighthouse marks the extremity of the south groyne breakwater, guiding vessels safely into and out of the port of Tonghae.

Light & Optic

Characteristic Signature
Fl Green 4s
Flash Type
Flashing
Light Color
Green
Interval
4s
Raw Code
Fl G 4s
Focal Height
14m
Geographic Range
11.6NM

Location

City
Donghae-si
Country
🇰🇷South Korea
Region
Gangwon State
Sea Region
Located at the end of the south groin, a breakwater about 350 m south of the older West Breakwater.
Latitude
37.5478°
Longitude
129.1174°

References & Identifiers

Nearest Port
Tonghae(0.9 km)
Admiralty No.
M4448.5
NGA No.
16469

Tower & Structure

Tower Height
11m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round cylindrical 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 Mukho South Groyne Lighthouse at night?+
Mukho South Groyne displays the characteristic Fl Green 4s. 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 Mukho South Groyne Lighthouse guide vessels into?+
Mukho South Groyne Lighthouse assists vessels approaching 5 nearby ports. The closest is Mukho/Donghae at 0.3 NM to the WSW. Other ports served include Tonghae (1.2 NM SW), Bupyong/Incheon (3 NM SSE), Donghae (3.4 NM SSE), Okgye/Gangneung (5.4 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Mukho South Groyne Lighthouse still active and maintained?+
Yes, Mukho South Groyne 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 Mukho South Groyne Lighthouse?+
Mukho South Groyne 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 Mukho South Groyne Lighthouse?+
You can track vessels near Mukho South Groyne 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.