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Onsan Hang North Breakwater Lighthouse

Fl Red 2.5s🇰🇷Ulsan, KROperational

Location & Light Range

About Onsan Hang North Breakwater Lighthouse

A cylindrical concrete tower, standing 10 meters tall and painted red, previously marked the northern side of the Onsan harbor entrance. Its light, red in color, was positioned 30 meters above sea level and provided a geographic range of 6 nautical miles. The tower was part of the maritime infrastructure for the busy port located on the southern edge of Ulsan, South Korea. Satellite imagery confirms the light was removed in 2016 following a shortening of the breakwater it served.

Light & Optic

Characteristic Signature
Fl Red 2.5s
Flash Type
Flashing
Light Color
Red
Interval
2.5s
Raw Code
Fl.W
Focal Height
30m
Geographic Range
6NM

Construction & History

Significant events: removed in 2016, breakwater shortened

References & Identifiers

Nearest Port
Ulsan(4.3 km)
Admiralty No.
M4379
NGA No.
16704

Tower & Structure

Tower Height
10m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: round concrete tower, painted red

Location

City
Ulsan
Country
🇰🇷South Korea
Sea Region
entrance to Onsan harbor on the south side of Ulsan, South Korea
Latitude
35.4512°
Longitude
129.3726°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Onsan Hang North Breakwater Lighthouse at night?+
Onsan Hang North Breakwater displays the characteristic Fl Red 2.5s. 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 Onsan Hang North Breakwater Lighthouse guide vessels into?+
Onsan Hang North Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Onsan/Ulsan at 0.9 NM to the SSW. Other ports served include Ulsan (3.6 NM N), Mipo/Ulsan (4.9 NM NE), Busanjin-Gu (24 NM SW), South Busan (24.6 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Onsan Hang North Breakwater Lighthouse still active and maintained?+
Yes, Onsan Hang North 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 Onsan Hang North Breakwater Lighthouse?+
Onsan Hang North 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 Onsan Hang North Breakwater Lighthouse?+
You can track vessels near Onsan Hang North 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.