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Himedo Kō Lighthouse

Iso Green 6s🇯🇵Kamiamakusa, JPOperational

Location & Light Range

About Himedo Kō Lighthouse

Himedo Kō lighthouse was established in 1977 and stands at the southern end of the Himedo harbor breakwater, near Uryū Saki. The structure is an 8.5-meter white concrete post rising from a 1-story concrete equipment shelter. It emits an isophase green light every 6 seconds, visible for 10.7 nautical miles. This light marks the entrance to Himedo harbor. The site is open to the public, though the tower itself is closed.

Why it matters: This lighthouse is essential for local fishing fleets and coastal vessels navigating into Himedo harbor, guiding them safely past the breakwater.

Light & Optic

Characteristic Signature
Iso Green 6s
Flash Type
Isophase
Light Color
Green
Interval
6s
Raw Code
Iso G 6s
Focal Height
11m
Geographic Range
10.7NM

Construction & History

Year Built
1977

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
8.5m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: An 8.5m white concrete post attached to a square 1-story concrete equipment shelter.

Location

City
Kamiamakusa
Country
🇯🇵Japan
Region
Kumamoto Prefecture
Sea Region
End of the south breakwater of Himedo harbor, in the lee of Uryū Saki.
Latitude
32.4387°
Longitude
130.4131°

References & Identifiers

Nearest Port
Futamado(1.0 km)
ARLHS No.
JPN-2094
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Frequently Asked Questions

How do mariners identify Himedo Kō Lighthouse at night?+
Himedo Kō displays the characteristic Iso Green 6s. 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 Himedo Kō Lighthouse guide vessels into?+
Himedo Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Himedo at 0.2 NM to the SE. Other ports served include Nagame (0.8 NM NNE), Tanasoko (4.1 NM WSW), Amura (5.5 NM NNE), Oura/Ariake (5.8 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Himedo Kō Lighthouse still active and maintained?+
Yes, Himedo 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 Himedo Kō Lighthouse?+
Himedo 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 Himedo Kō Lighthouse?+
You can track vessels near Himedo 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.