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Ushimado Kō Lighthouse

F White 3s🇯🇵Setouchi, JPOperational

A cylindrical white concrete tower, 11 meters tall, stands on a rocky point on Maejima island. This structure, featuring a small gallery, was built and first lit in 1971. It emits a white light with a characteristic of a fixed white light followed by a flash every 3 seconds. The focal height of the light is 13 meters, and it can be seen for 11.3 nautical miles. Located on the northwest side of the island, it shelters the harbor of Ushimado, approximately 1 kilometer east of the town's waterfront. While the grounds are open to visitors, the tower itself is closed to the public.

Why it matters: This lighthouse is essential for guiding local fishing fleets and recreational boaters into the sheltered port of Ushimado, particularly through the intricate channels around Maejima island within the Seto Inland Sea.

Characteristic Signature
F White 3s
Flash Type
Fixed
Light Color
White
Interval
3s
Raw Code
F W + Fl W 3s
Focal Height
13m
Geographic Range
11.3NM
Year Built
1971
Open to public
Site open, tower closed
Flag
Type
Name
Dist.
Tower Height
11m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round white concrete tower with a small gallery

City
Setouchi
Country
🇯🇵Japan
Region
Okayama Prefecture
Sea Region
Located on a rocky point on the northwest side of Maejima, the island sheltering the harbor of Ushimado, about 1 km (0.6 mi) east of the town's waterfront.
Latitude
34.6129°
Longitude
134.1739°
Nearest Port
Ushimado(1.0 km)
ARLHS No.
JPN-1903
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How do mariners identify Ushimado Kō Lighthouse at night?+
Ushimado Kō displays the characteristic F White 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Ushimado Kō Lighthouse guide vessels into?+
Ushimado Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Ushimado at 0.9 NM to the W. Other ports served include Kugui (6.4 NM N), Bizen (7.2 NM N), Katakami (7.4 NM N), Tonosho (7.8 NM S). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ushimado Kō Lighthouse still active and maintained?+
Yes, Ushimado 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 Ushimado Kō Lighthouse?+
Ushimado 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 Ushimado Kō Lighthouse?+
You can track vessels near Ushimado 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.