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Hwanghae Lightfloat Lighthouse

Fl (5) Yellow 20s🇰🇷Gunsan-si, KROperational

Location & Light Range

About Hwanghae Lightfloat Lighthouse

The Hwanghae Lightfloat, operational since 2007, is located in the Yellow Sea, 60 km west of Gwallido and about 20 km from Gunsan. This structure features a yellow tower, 12 meters high, atop a 10-meter diameter lightfloat. Its yellow light emits one flash every 20 seconds. The lightfloat serves not only as a navigational aid with a geographic range of 11 nautical miles but also as a platform for oceanographic research. The site is open, but the tower is closed to the public.

Why it matters: This lightfloat is important for oceanographic research conducted jointly by South Korea and China, providing data for understanding the Yellow Sea's marine environment.

Light & Optic

Characteristic Signature
Fl (5) Yellow 20s
Flash Type
Flashing
Light Color
Yellow
Flash Count
5 flashes
Interval
20s
Raw Code
Fl Y 20s
Focal Height
12m
Geographic Range
11NM

Construction & History

Year Built
2007

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
12m
Tower Color
yellow

Structure: yellow tower atop a 10 m (33 ft) diameter lightfloat

Location

City
Gunsan-si
Country
🇰🇷South Korea
Region
Jeonbuk State
Sea Region
Yellow Sea, about 60 km (37 mi) due west of Gwallido
Latitude
35.8275°
Longitude
126.2022°

References & Identifiers

Nearest Port
Gunsan(20.2 km)
Admiralty No.
M4206.5.
NGA No.
M4206.5
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Frequently Asked Questions

How do mariners identify Hwanghae Lightfloat Lighthouse at night?+
Hwanghae Lightfloat displays the characteristic Fl (5) Yellow 20s — 5 yellow flashes every 20 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 yellow color may indicate a specific sector or warning zone.
Which ports and harbors does Hwanghae Lightfloat Lighthouse guide vessels into?+
Hwanghae Lightfloat Lighthouse assists vessels approaching 5 nearby ports. The closest is Sangwangdeungdo at 11.2 NM to the SSW. Other ports served include Gunsan (20.7 NM ENE), Biin (22.1 NM NE), Janghang/Seocheon-gun (25.9 NM ENE), Daecheon (32.7 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Hwanghae Lightfloat Lighthouse still active and maintained?+
Yes, Hwanghae Lightfloat 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 Hwanghae Lightfloat Lighthouse?+
You can track vessels near Hwanghae Lightfloat 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.