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Misumi Kō Lighthouse

Fl (2) White 6s🇯🇵Uki, JPOperational

Location & Light Range

About Misumi Kō Lighthouse

Also known as: Misumi Kō (Ninai Shima)

This white, cylindrical concrete lighthouse was built in 1962. Standing 9.5 meters tall, it features a lantern atop a post attached to a one-story equipment shelter. Its light emits a single white flash every 6 seconds, visible for 11 nautical miles. The lighthouse is situated on a small islet at the western end of Ninai Shima, within Misumi Strait, west of Uki city. The nearest port is Misumi, Kumamoto, located 1.4 kilometers away. This structure serves as an active aid to navigation.

Why it matters: The lighthouse warns vessels about the islet at the western end of Ninai Shima, ensuring safe passage through the busy Misumi Strait.

Light & Optic

Characteristic Signature
Fl (2) White 6s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
6s
Raw Code
Fl W 6s
Focal Height
12m
Geographic Range
11NM

Construction & History

Year Built
1962

References & Identifiers

Nearest Port
Misumi, Kumamoto(1.4 km)
ARLHS No.
JPN-2101

Tower & Structure

Tower Height
9.5m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: A 9.5m white concrete post with a lantern, attached to a square 1-story concrete equipment shelter.

Location

City
Uki
Country
🇯🇵Japan
Region
Kumamoto Prefecture
Sea Region
on an islet at the western end of Ninai Shima in the middle of Misumi Strait, on the west side of the city
Latitude
32.6081°
Longitude
130.4579°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Misumi Kō Lighthouse at night?+
Misumi Kō displays the characteristic Fl (2) White 6s — 2 white flashes every 6 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. The white color may indicate a specific sector or warning zone.
Which ports and harbors does Misumi Kō Lighthouse guide vessels into?+
Misumi Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Aizu, Kumamoto at 0.7 NM to the SE. Other ports served include Akasaki, Kumamoto (0.7 NM SE), Fukuura, Kumamoto (0.7 NM SE), Kawachi, Kumamoto (0.7 NM SE), Kodomari, Kumamoto (0.7 NM SE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Misumi Kō Lighthouse still active and maintained?+
Yes, Misumi 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 Misumi Kō Lighthouse?+
Misumi 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 Misumi Kō Lighthouse?+
You can track vessels near Misumi 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.