O Iso Lighthouse
Location & Light Range
About O Iso Lighthouse
Constructed in 1937, this cylindrical concrete tower stands 16 meters tall and is painted white. Originally, the structure featured red and black horizontal bands, but it was repainted entirely white in 1986. The lighthouse emits a white flash every three seconds, visible for 11.6 nautical miles. It is situated on a dangerous rock in the narrow channel between Yashiro Shima and the mainland, approximately 2.5 km west of the Oshima Bridge. The focal height of the light is 14 meters.
Why it matters: This lighthouse is indispensable for safe passage through the narrow channel between Yashiro Shima and the mainland, specifically warning mariners away from the dangerous rock it occupies. Its active white flash helps prevent groundings in a critical shipping lane near the Oshima Bridge.
Light & Optic
- Flash Type
- Flashing
- Light Color
- White
- Interval
- 3s
- Raw Code
- Fl W 3s
- Focal Height
- 14m
- Geographic Range
- 11.6NM
Construction & History
- Year Built
- 1937
Significant events: repainted all white in 1986 from original red and black horizontal bands
References & Identifiers
- Nearest Port
- Kasasa, Yamaguchi(0.6 km)
- ARLHS No.
- JPN-1647
Tower & Structure
- Tower Height
- 16m
- Tower Shape
- cylindrical
- Tower Color
- white
- Material
- concrete
Structure: round concrete tower with lantern and gallery, painted white
Location
- City
- Suo-Oshima
- Country
- 🇯🇵Japan
- Region
- Yamaguchi Prefecture
- Sea Region
- dangerous rock in the narrow channel between Yashiro Shima and the mainland, about 2.5 km west of the Oshima Bridge
- Latitude
- 33.9541°
- Longitude
- 132.1773°
Nearby Vessels
O Iso Deniz Feneri'ni canlı deniz haritasında bulun
Japan yakınlarında sefer planlayın, yakındaki gemileri gerçek zamanlı görün ve uygulamada 14.900'den fazla seyir yardımcısını keşfedin.