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Yotsukura Kō South Detached Breakwater Lighthouse

Fl (2) Green 6s🇯🇵Iwaki, JPOperational

Location & Light Range

About Yotsukura Kō South Detached Breakwater Lighthouse

This white concrete post structure stands 7.5 meters tall, with its light positioned 10 meters above the water. It is situated at the north end of the main detached breakwater for the fishing port of Yotsukura. The light emits a green flash every 6 seconds, visible for 10.4 nautical miles. The post is attached to a square, single-story concrete equipment shelter. The site is accessible to the public, but the tower itself is closed.

Why it matters: This light marks the northern extremity of the breakwater, providing navigation guidance for vessels entering and exiting the Yotsukura fishing port.

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
10m
Geographic Range
10.4NM

Location

City
Iwaki
Country
🇯🇵Japan
Region
Fukushima Prefecture
Sea Region
Located at the north end of the main detached breakwater off the fishing port of Yotsukura.
Latitude
37.1080°
Longitude
141.0013°

References & Identifiers

Nearest Port
Yotsukura(0.2 km)
ARLHS No.
JPN-1371

Tower & Structure

Tower Height
7.5m
Tower Shape
post
Tower Color
white
Material
concrete

Structure: A 7.5m white 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 Yotsukura Kō South Detached Breakwater Lighthouse at night?+
Yotsukura Kō South Detached 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 Yotsukura Kō South Detached Breakwater Lighthouse guide vessels into?+
Yotsukura Kō South Detached Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Yotsukura at 0.2 NM to the WSW. Other ports served include Hisanohama (2.4 NM N), Ena (8.6 NM SSW), Nakanosaku (9.3 NM SSW), Ishiwaki (11.6 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yotsukura Kō South Detached Breakwater Lighthouse still active and maintained?+
Yes, Yotsukura Kō South Detached 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 Yotsukura Kō South Detached Breakwater Lighthouse?+
Yotsukura Kō South Detached 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 Yotsukura Kō South Detached Breakwater Lighthouse?+
You can track vessels near Yotsukura Kō South Detached 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.