Usuki Kō Lighthouse
Location & Light Range
About Usuki Kō Lighthouse
Usuki Kō lighthouse is a white, cylindrical concrete structure standing 9.5 meters tall, situated at the extremity of Usuki Port's main breakwater. Its equipment room is a single-story concrete building of square design. First lit in 1939, the lighthouse emits a long white flash every 8 seconds. The focal height of its light is 12 meters, providing a geographic range of 11 nautical miles. The site is accessible to the public, though the tower itself is closed.
Why it matters: This lighthouse is essential for guiding vessels into Usuki Port, preventing groundings and collisions at the busy harbor entrance.
Light & Optic
- Flash Type
- Long Flash
- Light Color
- White
- Interval
- 8s
- Raw Code
- LFl W 8s
- Focal Height
- 12m
- Geographic Range
- 11NM
Construction & History
- First Lit
- 1939
Significant events: station established 1939
Visiting
- Open to public
- Site open, tower closed
Nearby Vessels
Tower & Structure
- Tower Height
- 9.5m
- Tower Shape
- cylindrical
- Tower Color
- white
- Material
- concrete
Structure: A 9.5m concrete post attached to a square 1-story concrete equipment room. The entire lighthouse is white.
Location
- City
- Usuki
- Country
- 🇯🇵Japan
- Region
- Oita Prefecture
- Sea Region
- Usuki Port, at the end of the main breakwater
- Latitude
- 33.1273°
- Longitude
- 131.8148°
References & Identifiers
- Nearest Port
- Usuki(0.0 km)
- Admiralty No.
- M4941
- NGA No.
- 10564
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