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Ganjeolgot Lighthouse

Fl White 15s🇰🇷Ulsan, KROperational

Location & Light Range

About Ganjeolgot Lighthouse

Also known as: Ganjeolgot (Cape Kanjol)

A cylindrical concrete tower measuring 17 meters in height, with its light at a focal plane of 35 meters, was erected in 2001. The structure is white, with an octagonal base, and includes a lantern room and gallery. This light produces a white flash that repeats every 15 seconds and can be seen up to 16.2 nautical miles away. The present tower was constructed in 2001, succeeding an original lighthouse from 1920.

Why it matters: This navigation aid assists ships on the southeastern coast of South Korea, marking the approach to the port of Ulsan.

Light & Optic

Characteristic Signature
Fl White 15s
Flash Type
Flashing
Light Color
White
Interval
15s
Raw Code
Fl W 15s
Focal Height
35m
Geographic Range
16.2NM

Construction & History

Year Built
1920
First Lit
2001

Significant events: rebuilt in 2001

References & Identifiers

Nearest Port
Ulsan(8.4 km)
Admiralty No.
M4378
NGA No.
16712
ARLHS No.
SKR-012

Tower & Structure

Tower Height
17m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: octagonal cylindrical concrete tower with lantern and gallery

Location

City
Ulsan
Country
🇰🇷South Korea
Region
Ulju-gun
Sea Region
southeastern corner of Korea, on a promontory about 25 km south of downtown Ulsan
Latitude
35.3590°
Longitude
129.3606°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Ganjeolgot Lighthouse at night?+
Ganjeolgot displays the characteristic Fl White 15s. 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 Ganjeolgot Lighthouse guide vessels into?+
Ganjeolgot Lighthouse assists vessels approaching 5 nearby ports. The closest is Onsan/Ulsan at 4.7 NM to the N. Other ports served include Ulsan (9.2 NM N), Mipo/Ulsan (10.1 NM NNE), South Busan (19.5 NM SSW), Busanjin-Gu (19.7 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ganjeolgot Lighthouse still active and maintained?+
Yes, Ganjeolgot 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 Ganjeolgot Lighthouse?+
Ganjeolgot 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 Ganjeolgot Lighthouse?+
You can track vessels near Ganjeolgot 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.