Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Janggudo Lighthouse

Fl Red 4s🇰🇷Yeosu-si, KROperational

Location & Light Range

About Janggudo Lighthouse

Also known as: Janggudo (Changgudo, Chilyeo)

The Janggudo lighthouse is a 15-meter tall cylindrical concrete tower with a gallery, painted red. Its light source is positioned 13 meters above sea level, emitting a red flash every 4 seconds. It guides vessels through a narrow passage situated about 5 kilometers west of the Baegyado lighthouse. The nearest port is Yeosu, located 10.2 kilometers away. This structure marks a confined waterway between two islands.

Why it matters: This lighthouse is essential for directing maritime traffic through the specific, narrow passage it illuminates between two islands.

Light & Optic

Characteristic Signature
Fl Red 4s
Flash Type
Flashing
Light Color
Red
Interval
4s
Raw Code
Fl R 4s
Focal Height
13m
Geographic Range
11.3NM

Location

City
Yeosu-si
Country
🇰🇷South Korea
Region
South Jeolla
Sea Region
narrow passage between two islands, about 5 km west of the Baegyado lighthouse
Latitude
34.5939°
Longitude
127.6196°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
15m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: round concrete tower with gallery

References & Identifiers

Nearest Port
Yeosu(10.2 km)
Admiralty No.
M4305.6
NGA No.
17222
Live tracking · 50,000+ mariners

Find Janggudo Lighthouse on the live nautical map

Plan voyages near South Korea, see nearby vessels in real time, and explore 14,900+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Janggudo Lighthouse at night?+
Janggudo displays the characteristic Fl Red 4s. 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 red color may indicate a specific sector or warning zone.
Which ports and harbors does Janggudo Lighthouse guide vessels into?+
Janggudo Lighthouse assists vessels approaching 5 nearby ports. The closest is Yeosu at 9.2 NM to the NNE. Other ports served include Gwangyang (18.1 NM NNE), Samil (18.3 NM NNE), Narodo (22.2 NM SW), Nokdongsin (24.5 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Janggudo Lighthouse still active and maintained?+
Yes, Janggudo 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 Janggudo Lighthouse?+
Janggudo 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 Janggudo Lighthouse?+
You can track vessels near Janggudo 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.