Ōiso Kō Lighthouse
Location & Light Range
About Ōiso Kō Lighthouse
Ōiso Kō lighthouse stands at the end of the south breakwater in Oiso, Japan. Constructed from concrete in 2011, this square tower is 10 meters tall and has a focal height of 14 meters. It features a distinctive design that is wider at the top than at the bottom and is painted white with the town's name in large blue Latin letters on its sides. The lighthouse emits a green light, with a single flash every six seconds, providing a geographic range of 11.6 nautical miles. The site is open to the public, though the tower itself is closed to ensure continued operation.
Why it matters: This lighthouse marks the extended main breakwater, offering safe navigation into Ōiso's harbor. Its unique appearance also serves as a visual identifier for mariners.
Light & Optic
- Flash Type
- Fixed
- Light Color
- Green
- Interval
- 6s
- Raw Code
- F G (Fl) 6s
- Focal Height
- 14m
- Geographic Range
- 11.6NM
Construction & History
- Year Built
- 2011
Significant events: Breakwater extended, new lighthouse built to replace old one
Visiting
- Open to public
- Site open, tower closed
Nearby Vessels
Tower & Structure
- Tower Height
- 10m
- Tower Shape
- square
- Tower Color
- white with the name of the town in large blue Latin letters on the sides
- Material
- concrete
Structure: square concrete tower with gallery; the tower is wider at the top than at the bottom
Location
- City
- Oiso
- Country
- 🇯🇵Japan
- Region
- Kanagawa Prefecture
- Sea Region
- end of the south (main) breakwater at Ōiso
- Latitude
- 35.3049°
- Longitude
- 139.3205°
References & Identifiers
- Nearest Port
- Oiso(0.1 km)
- ARLHS No.
- JPN-1412
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