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Ōshima Lighthouse

Fl (2) White 15s🇯🇵Munakata, JPOperational

Location & Light Range

About Ōshima Lighthouse

Also known as: Ōshima (Chikusen Ōshima)

This lighthouse, built of concrete, stands 11 meters tall with a focal height of 51 meters. Its white, cylindrical tower features a lantern and gallery, and is attached to a single-story keeper's cottage. Established in 1926, it emits a white flash every 15 seconds, visible for nearly 19 nautical miles. The lighthouse is situated at the northwestern tip of Ōshima, an island approximately 8 kilometers off the coast of Fukuma. The site is open to visitors, though the tower itself remains closed.

Why it matters: The lighthouse marks the northwestern tip of Ōshima island, providing guidance for vessels navigating the waters off Fukuma.

Light & Optic

Characteristic Signature
Fl (2) White 15s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
15s
Raw Code
Fl W 15s
Focal Height
51m
Geographic Range
18.8NM

Construction & History

Year Built
1926

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
11m
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 cottage

Location

City
Munakata
Country
🇯🇵Japan
Region
Fukuoka Prefecture
Sea Region
Ōshima, a roughly triangular island about 5 km in diameter and 8 km off the coast north of Fukuma. It is located at the northwestern tip of the island, which is part of a national park.
Latitude
33.9097°
Longitude
130.4087°

References & Identifiers

Nearest Port
Ohshima, Fukuoka(1.7 km)
Admiralty No.
M5288
NGA No.
12392
ARLHS No.
JPN-648
Wikidata
Q11659211 →
OpenStreetMap
View on OSM →
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Frequently Asked Questions

How do mariners identify Ōshima Lighthouse at night?+
Ōshima displays the characteristic Fl (2) White 15s — 2 white flashes every 15 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 Ōshima Lighthouse guide vessels into?+
Ōshima Lighthouse assists vessels approaching 5 nearby ports. The closest is Ashiya, Fukuoka at 12.4 NM to the E. Other ports served include Hakata/Fukuoka (16.9 NM S), Hakata (17.2 NM S), Hibikishinko (17.6 NM ENE), Kasuya (18 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ōshima Lighthouse still active and maintained?+
Yes, Ōshima 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 Ōshima Lighthouse?+
Ōshima 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 Ōshima Lighthouse?+
You can track vessels near Ōshima 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.