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Yanai Kō East Breakwater Lighthouse

Fl (2) Green 6s🇯🇵Yanai, JPOperational

Location & Light Range

About Yanai Kō East Breakwater Lighthouse

This post-style lighthouse, standing 8.5 meters tall, is constructed of white-painted concrete and attached to a single-story equipment shelter. Its focal plane reaches 11 meters above the water. The light emits a single green flash every 6 seconds and has a nominal range of 10.7 nautical miles. It is situated on a detached breakwater within Yanai Port, Japan, approximately 0.3 km from the nearest port facilities. The site is accessible to the public, but the tower itself is closed to visitors.

Why it matters: This navigational aid is essential for guiding vessels safely around the eastern detached breakwater, preventing groundings within Yanai Port. Its distinctive green flashes assist mariners in identifying the port's entrance channel, supporting both maritime commerce and local fishing activities.

Light & Optic

Characteristic Signature
Fl (2) Green 6s
Flash Type
Flashing
Light Color
Green
Flash Count
2 flashes
Interval
6s
Raw Code
Fl G 6s
Focal Height
11m
Geographic Range
10.7NM

Location

City
Yanai
Country
🇯🇵Japan
Region
Yamaguchi Prefecture
Sea Region
Located on a detached breakwater in Japan.
Latitude
33.9525°
Longitude
132.1389°

References & Identifiers

Nearest Port
Yanai(0.3 km)
ARLHS No.
JPN-1676

Tower & Structure

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

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

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 East Breakwater Lighthouse at night?+
Yanai Kō East Breakwater displays the characteristic Fl (2) Green 6s — 2 green 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Yanai Kō East Breakwater Lighthouse guide vessels into?+
Yanai Kō East Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Hirao at 0.3 NM to the WSW. Other ports served include Yanai (0.5 NM WSW), Kuka (6.1 NM E), Tsuzu Yamaguchi (6.6 NM NNE), Hikari (10.4 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yanai Kō East Breakwater Lighthouse still active and maintained?+
Yes, Yanai Kō East 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 East Breakwater Lighthouse?+
Yanai Kō East 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 East Breakwater Lighthouse?+
You can track vessels near Yanai Kō East 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.