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Jeongja Lighthouse

Fl G 4s🇰🇷Ulsan, KROperational

Location & Light Range

About Jeongja Lighthouse

The Jeongja Lighthouse is a red metal tower standing 33 meters tall. Its light characteristic is two red flashes every 6 seconds. The focal height of the light is 17 meters. It has a geographic range of 11 nautical miles. This structure is located in Ulsan, South Korea.

Light & Optic

Characteristic Signature
Fl G 4s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
4s
Raw Code
Fl.(2)R. period 6s
Focal Height
17m
Geographic Range
11NM

Location

City
Ulsan
Country
🇰🇷KR
Latitude
35.6163°
Longitude
129.4565°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
33m
Tower Color
red
Material
metal

Structure: Red metal tower; 33

References & Identifiers

Admiralty No.
M4397.4
NGA No.
16673
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Frequently Asked Questions

How do mariners identify Jeongja Lighthouse at night?+
Jeongja displays the characteristic Fl G 4s — 1 green 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Jeongja Lighthouse guide vessels into?+
Jeongja Lighthouse assists vessels approaching 5 nearby ports. The closest is Mipo/Ulsan at 6.1 NM to the S. Other ports served include Ulsan (7.3 NM SSW), Onsan/Ulsan (11.7 NM SSW), Guryongpo (22.5 NM NNE), Pohang (24.1 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Jeongja Lighthouse still active and maintained?+
Yes, Jeongja 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 Jeongja Lighthouse?+
Jeongja 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 Jeongja Lighthouse?+
You can track vessels near Jeongja 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.