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Ō Shima Lighthouse

Fl (2) White 20s🇯🇵Goto, JPOperational

Location & Light Range

About Ō Shima Lighthouse

Also known as: Ō Shima (Gotō Ōshima, Fukue Ōshima)

Built in 1934, the Ō Shima lighthouse stands on the island's highest point. The lighthouse is a 13-meter cylindrical concrete tower, painted white, featuring a lantern and gallery. It is attached to a 1-story concrete keeper's house. The light emits a white flash every 20 seconds from a focal height of 103 meters, visible for 25.2 nautical miles. Ō Shima itself is a small, inhabited island approximately 2 kilometers long, located about 10 kilometers southeast of Fukue Shima. The nearest port, Shukunoura, is 20.9 kilometers away.

Why it matters: This lighthouse is essential for safe navigation around Ō Shima and the nearby Fukue Shima, guiding vessels through local sea lanes and helping mariners avoid hazards.

Light & Optic

Characteristic Signature
Fl (2) White 20s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
20s
Raw Code
Fl W 20s
Focal Height
103m
Geographic Range
25.2NM

Construction & History

Year Built
1934

References & Identifiers

Nearest Port
Shukunoura(20.9 km)
ARLHS No.
JPN-447

Tower & Structure

Tower Height
13m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: square cylindrical concrete tower with lantern and gallery, attached to a 1-story concrete keeper's house

Location

City
Goto
Country
🇯🇵Japan
Region
Nagasaki Prefecture
Sea Region
Ō Shima is an inhabited island about 2 km in length located about 10 km southeast of Fukue Shima. Located on the highest point of the island.
Latitude
32.5662°
Longitude
128.9044°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Ō Shima Lighthouse at night?+
Ō Shima displays the characteristic Fl (2) White 20s — 2 white flashes every 20 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Ō Shima Lighthouse guide vessels into?+
Ō Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is Tomie at 7.7 NM to the WNW. Other ports served include Goto (7.9 NM NNW), Tamanoura (15 NM WNW), Origami (16 NM N), Arao (18.3 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ō Shima Lighthouse still active and maintained?+
Yes, Ō Shima 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 Ō Shima Lighthouse?+
Ō Shima 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 Ō Shima Lighthouse?+
You can track vessels near Ō Shima 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.