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Ilsan Hang Lighthouse

Fl (6) White 15s🇰🇷Ulsan, KROperational

Location & Light Range

About Ilsan Hang Lighthouse

This cylindrical concrete tower stands 19 meters tall and is painted with its upper half yellow and lower half black. Located off a rocky reef at the south end of the Hyundai complex, the lighthouse is situated within Ilsan harbor, near the city of Ulsan. Its light emits a white flash every 15 seconds, visible for a geographic range of 12.4 nautical miles. The structure features a gallery, and while the site is accessible, the tower itself remains closed to the public. The nearest port is Ulsan, just 1.2 kilometers away.

Why it matters: The lighthouse warns vessels of a hazardous rocky reef within Ilsan harbor, adjacent to the Hyundai industrial complex.

Light & Optic

Characteristic Signature
Fl (6) White 15s
Flash Type
Flashing
Light Color
White
Flash Count
6 flashes
Interval
15s
Raw Code
Fl W 15s
Focal Height
17m
Geographic Range
12.4NM

Location

City
Ulsan
Country
🇰🇷South Korea
Sea Region
Ilsan harbor, off a rocky reef at the south end of the Hyundai complex
Latitude
35.4928°
Longitude
129.4425°

References & Identifiers

Nearest Port
Ulsan(1.2 km)
Admiralty No.
M4394.5
NGA No.
16683

Tower & Structure

Tower Height
19m
Tower Shape
cylindrical
Tower Color
Upper half yellow, lower half black
Material
concrete

Structure: round cylindrical concrete tower with gallery

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 Ilsan Hang Lighthouse at night?+
Ilsan Hang displays the characteristic Fl (6) White 15s — 6 white flashes every 15 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 Ilsan Hang Lighthouse guide vessels into?+
Ilsan Hang Lighthouse assists vessels approaching 5 nearby ports. The closest is Mipo/Ulsan at 1.5 NM to the NNW. Other ports served include Ulsan (3.1 NM WNW), Onsan/Ulsan (5.1 NM SW), Busanjin-Gu (28.2 NM SW), South Busan (28.5 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ilsan Hang Lighthouse still active and maintained?+
Yes, Ilsan Hang 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 Ilsan Hang Lighthouse?+
Ilsan Hang 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 Ilsan Hang Lighthouse?+
You can track vessels near Ilsan Hang 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.