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Onsan Hang South Breakwater East End Lighthouse

Fl R 4s🇰🇷Ulsan, KROperational

Location & Light Range

About Onsan Hang South Breakwater East End Lighthouse

This yellow, round concrete tower stands 43 meters tall and has a focal plane of 17 meters. It emits a red flash every 2 seconds, visible for 3 nautical miles. The structure, painted entirely yellow, is situated at the eastern end of the Onsan Hang South Breakwater. It was built to assist navigation into Ulsan New Port.

Why it matters: This light and another mark the northern entrance to Ulsan New Port.

Light & Optic

Characteristic Signature
Fl R 4s
Flash Type
Flashing
Light Color
Red
Flash Count
1 flash
Interval
4s
Raw Code
Fl.R. period 2s
Focal Height
17m
Geographic Range
3NM

Location

City
Ulsan
Country
🇰🇷KR
Latitude
35.4453°
Longitude
129.3790°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
43m
Tower Shape
round
Tower Color
yellow
Material
concrete

Structure: Yellow round concrete tower; 43. SOUTH KOREA 211

References & Identifiers

Admiralty No.
M4381.12
NGA No.
16706
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Frequently Asked Questions

How do mariners identify Onsan Hang South Breakwater East End Lighthouse at night?+
Onsan Hang South Breakwater East End displays the characteristic Fl R 4s — 1 red flash every 4 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 red color may indicate a specific sector or warning zone.
Which ports and harbors does Onsan Hang South Breakwater East End Lighthouse guide vessels into?+
Onsan Hang South Breakwater East End Lighthouse assists vessels approaching 5 nearby ports. The closest is Onsan/Ulsan at 0.9 NM to the WSW. Other ports served include Ulsan (4 NM N), Mipo/Ulsan (5 NM NNE), Busanjin-Gu (24 NM SW), South Busan (24.5 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Onsan Hang South Breakwater East End Lighthouse still active and maintained?+
Yes, Onsan Hang South Breakwater East End 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 South Breakwater East End Lighthouse?+
Onsan Hang South Breakwater East End 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 South Breakwater East End Lighthouse?+
You can track vessels near Onsan Hang South Breakwater East End 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.