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Seul Do Lighthouse

Fl W 6s🇰🇷Ulsan, KROperational

Location & Light Range

About Seul Do Lighthouse

This lighthouse features a white, octagonal concrete tower that rises 52 meters above the ground. It stands at a focal height of 23 meters. The structure emits a white flash on a 6-second cycle. Its geographic range extends to 20 nautical miles. The lighthouse is operational and located in Ulsan.

Light & Optic

Characteristic Signature
Fl W 6s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
6s
Raw Code
Fl.W. period 6s
Focal Height
23m
Geographic Range
20NM

Location

City
Ulsan
Country
🇰🇷KR
Latitude
35.4782°
Longitude
129.4312°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
52m
Tower Shape
octagonal
Tower Color
white
Material
concrete

Structure: White octagonal concrete tower; 52

References & Identifiers

Admiralty No.
M4388
NGA No.
16687
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Frequently Asked Questions

How do mariners identify Seul Do Lighthouse at night?+
Seul Do displays the characteristic Fl W 6s — 1 white flash every 6 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.
Which ports and harbors does Seul Do Lighthouse guide vessels into?+
Seul Do Lighthouse assists vessels approaching 5 nearby ports. The closest is Mipo/Ulsan at 2.3 NM to the N. Other ports served include Ulsan (3.1 NM NW), Onsan/Ulsan (4.1 NM SW), Busanjin-Gu (27.1 NM SW), South Busan (27.4 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Seul Do Lighthouse still active and maintained?+
Yes, Seul Do 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 Seul Do Lighthouse?+
Seul Do 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 Seul Do Lighthouse?+
You can track vessels near Seul Do 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.