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Seto Fukushima Kō Lighthouse

Q white 4s🇯🇵Saikai, JPOperational

Location & Light Range

About Seto Fukushima Kō Lighthouse

Also known as: Seto Fukushima Kō (South Breakwater)

Established in 1966, Seto Fukushima Kō is a red, cylindrical concrete lighthouse standing 9.5 meters tall. It features a lantern atop the tower and is connected to a 1-story concrete equipment shelter. The lighthouse guides vessels at the end of the south breakwater of Seto harbor in Saikai, Nagasaki Prefecture. Its geographic range is 5 nautical miles, and it emits a quick white flash. The site is open to the public, though the tower itself is closed.

Why it matters: This lighthouse marked the south breakwater entrance to Seto harbor, aiding safe passage for local fishing boats and other maritime traffic.

Light & Optic

Characteristic Signature
Q white 4s
Flash Type
Quick
Light Color
white
Interval
4s
Raw Code
Q.W
Focal Height
7m
Geographic Range
5NM

Construction & History

Year Built
1966

Significant events: Inactive since 2022

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
9.5m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: A 9.5m concrete post with a lantern, attached to a square 1-story concrete equipment shelter. The entire lighthouse is painted red.

Location

City
Saikai
Country
🇯🇵Japan
Region
Nagasaki Prefecture
Sea Region
end of the south breakwater of Seto harbor in Saikai
Latitude
32.9320°
Longitude
129.6340°

References & Identifiers

Nearest Port
Seto(0.5 km)
Admiralty No.
M5208
NGA No.
11852
USCG No.
JCG-6323
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Frequently Asked Questions

How do mariners identify Seto Fukushima Kō Lighthouse at night?+
Seto Fukushima Kō displays the characteristic Q white 4s. 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 Seto Fukushima Kō Lighthouse guide vessels into?+
Seto Fukushima Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Seto at 0.1 NM to the NNW. Other ports served include Saikai (0.8 NM E), Matsushima, Nagasaki (1.7 NM WNW), Matsuura, Nagasaki (1.7 NM W), Nanatsugama (1.7 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Seto Fukushima Kō Lighthouse still active and maintained?+
Yes, Seto Fukushima 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 Seto Fukushima Kō Lighthouse?+
Seto Fukushima 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 Seto Fukushima Kō Lighthouse?+
You can track vessels near Seto Fukushima 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.