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Yanai Kō West Breakwater Lighthouse

Fl Red 3s🇯🇵Yanai, JPOperational

Location & Light Range

About Yanai Kō West Breakwater Lighthouse

This red concrete post lighthouse stands 8.5 meters tall, with a focal height of 12 meters, and emits a red flash every 3 seconds. It is attached to a single-story concrete equipment shelter. Situated on a detached breakwater, the structure precisely marks the west entrance to Yanai harbor. The lighthouse has a geographic range of 11 nautical miles. While the breakwater site is accessible, the tower itself is closed to the public. The lighthouse is located 0.2 kilometers from the nearest port, Yanai.

Why it matters: This lighthouse is essential for maritime safety, specifically guiding ships through the west entrance of Yanai harbor. Its red flash provides a clear, unmistakable signal for vessels approaching the port, ensuring the smooth flow of local and commercial shipping traffic into and out of Yanai.

Light & Optic

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

Location

City
Yanai
Country
🇯🇵Japan
Region
Yamaguchi Prefecture
Sea Region
Located on a detached breakwater at the west entrance to Yanai harbor.
Latitude
33.9540°
Longitude
132.1351°

References & Identifiers

Nearest Port
Yanai(0.2 km)
ARLHS No.
JPN-1677

Tower & Structure

Tower Height
8.5m
Tower Shape
post
Tower Color
red
Material
concrete

Structure: An 8.5m red concrete post with a lantern, attached to a square 1-story concrete equipment shelter.

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Yanai Kō West Breakwater Lighthouse at night?+
Yanai Kō West Breakwater displays the characteristic Fl Red 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 red color may indicate a specific sector or warning zone.
Which ports and harbors does Yanai Kō West Breakwater Lighthouse guide vessels into?+
Yanai Kō West Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Hirao at 0.3 NM to the SSW. Other ports served include Yanai (0.4 NM WSW), Kuka (6.2 NM E), Tsuzu Yamaguchi (6.6 NM NNE), Hikari (10.2 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yanai Kō West Breakwater Lighthouse still active and maintained?+
Yes, Yanai Kō West Breakwater 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 Yanai Kō West Breakwater Lighthouse?+
Yanai Kō West Breakwater 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 Yanai Kō West Breakwater Lighthouse?+
You can track vessels near Yanai Kō West Breakwater 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.