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Ibuki Kō Lighthouse

Fl White 3s🇯🇵Kan-onji, JPOperational

Location & Light Range

About Ibuki Kō Lighthouse

Also known as: Ibuki Kō (Aka Saki)

The Ibuki Kō lighthouse, built in 1959, is an 11-meter concrete post situated atop a square, single-story equipment shelter. Painted white, this cylindrical tower stands 13 meters above sea level. It emits a single white flash every 3 seconds, visible for 11.3 nautical miles. The lighthouse is located at the elbow of the outer breakwater for Ibukijima, an island 11 kilometers west of Kan'onji. Its construction material is concrete, and it has been operational since its initial lighting in 1959.

Why it matters: This lighthouse marks the outer breakwater, aiding ferries and local vessels approaching Ibukijima. Its light helps prevent groundings and ensures safe maritime operations.

Light & Optic

Characteristic Signature
Fl White 3s
Flash Type
Flashing
Light Color
White
Interval
3s
Raw Code
Fl W 3s
Focal Height
13m
Geographic Range
11.3NM

Construction & History

Year Built
1959

References & Identifiers

Nearest Port
Toyohama, Kagawa(4.7 km)
Admiralty No.
M5483
NGA No.
8624
ARLHS No.
JPN-2432

Tower & Structure

Tower Height
11m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: A 11m concrete post rising from a square 1-story concrete equipment shelter, painted white.

Location

City
Kan-onji
Country
🇯🇵Japan
Region
Kagawa Prefecture
Sea Region
Located at the elbow of the outer breakwater at Ibukijima, an island 11 km (7 mi) west of the Kan'onji waterfront.
Latitude
34.1253°
Longitude
133.5319°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Ibuki Kō Lighthouse at night?+
Ibuki Kō displays the characteristic Fl White 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Ibuki Kō Lighthouse guide vessels into?+
Ibuki Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Nio at 7 NM to the NE. Other ports served include Mishima, Kawanoe (7.4 NM S), Ohama, Ehime (7.4 NM NNE), Ishima (7.6 NM S), Iyomishima (7.6 NM S). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ibuki Kō Lighthouse still active and maintained?+
Yes, Ibuki 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 Ibuki Kō Lighthouse?+
Ibuki 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 Ibuki Kō Lighthouse?+
You can track vessels near Ibuki 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.