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Ōdo Kō Lighthouse

Fl Green 3s🇯🇵Uto, JPOperational

Location & Light Range

About Ōdo Kō Lighthouse

Established in 1972, this lighthouse is a tapered, square skeletal tower constructed of steel and painted white. It stands 10 meters tall, with its light positioned 12 meters above sea level, offering a geographic range of 11 nautical miles. The structure is situated at the end of a long training wall at Ōdo harbor in Uto, Kumamoto Prefecture. Its light emits a single green flash every three seconds. While the site is accessible to the public, the tower itself is closed.

Why it matters: The lighthouse's green flashing light serves as a critical marker for vessels navigating the entrance to Ōdo harbor, guiding them past the harbor's extensive training wall.

Light & Optic

Characteristic Signature
Fl Green 3s
Flash Type
Flashing
Light Color
Green
Interval
3s
Raw Code
Fl G 3s
Focal Height
12m
Geographic Range
11NM

Construction & History

Year Built
1972

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
10m
Tower Shape
square
Tower Color
white
Material
steel

Structure: tapered square skeletal tower, painted white

Location

City
Uto
Country
🇯🇵Japan
Region
Kumamoto Prefecture
Sea Region
Located at the end of a long training wall at Ōdo harbor.
Latitude
32.6690°
Longitude
130.5366°

References & Identifiers

Nearest Port
Misumi, Kumamoto(4.4 km)
Admiralty No.
M5167
NGA No.
11588
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Frequently Asked Questions

How do mariners identify Ōdo Kō Lighthouse at night?+
Ōdo Kō displays the characteristic Fl Green 3s. 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Ōdo Kō Lighthouse guide vessels into?+
Ōdo Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Sumiyoshi at 3.7 NM to the NE. Other ports served include Aizu, Kumamoto (5.4 NM SW), Akasaki, Kumamoto (5.4 NM SW), Fukuura, Kumamoto (5.4 NM SW), Kawachi, Kumamoto (5.4 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ōdo Kō Lighthouse still active and maintained?+
Yes, Ōdo Kō 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 Ōdo Kō Lighthouse?+
Ōdo Kō 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 Ōdo Kō Lighthouse?+
You can track vessels near Ōdo Kō 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.