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Dokdo Lighthouse

Fl W 10s🇯🇵Ulleungdo and Dokdo, JPInactive

Location & Light Range

About Dokdo Lighthouse

Also known as: Dokdo Lighthouse

This lighthouse features a white, round concrete tower that rises 49 meters high. Its focal plane is situated 104 meters above sea level. The light emits a single white flash every 10 seconds. It has a recorded geographic range of 23 nautical miles. The structure is built of concrete.

Light & Optic

Characteristic Signature
Fl W 10s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
10s
Raw Code
Fl.W. period 10s
Focal Height
104m
Geographic Range
23NM

Location

City
Ulleungdo and Dokdo
Country
🇯🇵JP
Latitude
37.2406°
Longitude
131.8675°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
49m
Tower Shape
round
Tower Color
white
Material
concrete

Structure: White round concrete tower; 49

References & Identifiers

Admiralty No.
M4440
NGA No.
16548
OpenStreetMap
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Frequently Asked Questions

How do mariners identify Dokdo Lighthouse at night?+
Dokdo displays the characteristic Fl W 10s — 1 white flash every 10 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 Dokdo Lighthouse guide vessels into?+
Dokdo Lighthouse assists vessels approaching 2 nearby ports. The closest is Dokdo at 0.9 NM to the WSW. Other ports served include Ulleung (48.1 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Dokdo Lighthouse still active and maintained?+
Dokdo Lighthouse is currently listed as inactive. It may have been decommissioned, replaced by a different navigation aid, or temporarily taken out of service. Mariners should check the latest Notices to Mariners for current status.
What shipping routes pass near Dokdo Lighthouse?+
Dokdo 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 Dokdo Lighthouse?+
You can track vessels near Dokdo 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.