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Yo Do Lighthouse

Occ W 20s🇰🇵North Korea, KPOperational

Location & Light Range

About Yo Do Lighthouse

This white octagonal concrete tower stands 26 meters tall. The light emits an occulting white signal on a 20-second cycle. The focal height reaches 67 meters above sea level, providing a geographic range of 20 nautical miles. The structure was built in North Korea.

Light & Optic

Characteristic Signature
Occ W 20s
Flash Type
Occ
Light Color
White
Flash Count
1 flash
Interval
20s
Raw Code
Oc.W. period 20s
Focal Height
67m
Geographic Range
20NM

Location

City
North Korea
Country
🇰🇵KP
Latitude
39.2259°
Longitude
127.6352°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
26m
Tower Shape
octagonal
Tower Color
white
Material
concrete

Structure: White octagonal concrete tower; 26. NORTH KOREA 200

References & Identifiers

Admiralty No.
M4472
NGA No.
16332
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Frequently Asked Questions

How do mariners identify Yo Do Lighthouse at night?+
Yo Do displays the characteristic Occ W 20s — 1 white flash every 20 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 Yo Do Lighthouse guide vessels into?+
Yo Do Lighthouse assists vessels approaching 2 nearby ports. The closest is Wonsan at 9.4 NM to the WSW. Other ports served include Hungnam (36 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yo Do Lighthouse still active and maintained?+
Yes, Yo 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 Yo Do Lighthouse?+
Yo 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 Yo Do Lighthouse?+
You can track vessels near Yo 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.