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Yoshioka Kō Lighthouse

FFl Green 6s🇯🇵Fukushima, JPOperational

Location & Light Range

About Yoshioka Kō Lighthouse

This 9-meter concrete lighthouse marks the end of the main breakwater for Yoshioka fishing port. The structure comprises a concrete post connected to a single-story concrete equipment building. Its light, visible for 11.6 nautical miles, flashes green every six seconds (FFl G 6s). The lighthouse is situated about 8 kilometers northeast of Cape Shirakami. Access to the site is permitted, but climbing the tower is not allowed. It is located 2.1 kilometers from Fukushima (Hokkaido).

Why it matters: The lighthouse serves as a navigation aid for vessels entering and leaving Yoshioka port, which supports the local fishing industry. It warns of the main breakwater, contributing to safe passage in this location.

Light & Optic

Characteristic Signature
FFl Green 6s
Flash Type
Fixed and Flashing
Light Color
Green
Interval
6s
Raw Code
FFl G 6s
Focal Height
14m
Geographic Range
11.6NM

Location

City
Fukushima
Country
🇯🇵Japan
Region
Hokkaido Prefecture
Sea Region
end of the east (main) breakwater of Yoshioka, a fishing port about 8 km northeast of Cape Shirakami
Latitude
41.4453°
Longitude
140.2412°

References & Identifiers

Nearest Port
Fukushima (hokkaido)(2.1 km)
ARLHS No.
JPN-1024

Tower & Structure

Tower Height
9m
Tower Shape
square
Tower Color
white
Material
concrete

Structure: concrete post attached to a square 1-story concrete equipment building

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 Yoshioka Kō Lighthouse at night?+
Yoshioka Kō displays the characteristic FFl Green 6s. 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 Yoshioka Kō Lighthouse guide vessels into?+
Yoshioka Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Fukushima (hokkaido) at 2.1 NM to the NNE. Other ports served include Fukushima, Hokkaido (2.2 NM NNE), Matsumae (6.9 NM WSW), Shizuura (10.6 NM WNW), Minmaya (13 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yoshioka Kō Lighthouse still active and maintained?+
Yes, Yoshioka 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 Yoshioka Kō Lighthouse?+
Yoshioka 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 Yoshioka Kō Lighthouse?+
You can track vessels near Yoshioka 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.