Kanawa Iwa Lighthouse
Location & Light Range
About Kanawa Iwa Lighthouse
Established in 1927, this concrete lighthouse stands 12 meters tall on a round cylindrical tower. It is situated on a shoal on the south side of the main shipping channel within Japan's Inland Sea, near Takamatsu. The structure consists of a post light centered on the tower, which is mounted on a concrete pier. Its red light flashes once every 8 seconds, visible for 11.6 nautical miles. The site is open to visitors, but the tower itself is closed to the public.
Why it matters: The lighthouse marks the southern edge of a key shipping channel in the Inland Sea, warning vessels of the associated shoal and aiding navigation through this busy waterway.
Light & Optic
- Flash Type
- Flashing
- Light Color
- Red
- Interval
- 8s
- Raw Code
- Fl R 8s
- Focal Height
- 14m
- Geographic Range
- 11.6NM
Construction & History
- Year Built
- 1927
Visiting
- Open to public
- Site open, tower closed
Nearby Vessels
Tower & Structure
- Tower Height
- 12m
- Tower Shape
- cylindrical
- Tower Color
- red
- Material
- concrete
Structure: post light centered on a round cylindrical concrete tower, mounted on a concrete pier
Location
- City
- Takamatsu
- Country
- 🇯🇵Japan
- Region
- Kagawa Prefecture
- Sea Region
- Located on a shoal on the south side of the main shipping channel in the Inland Sea.
- Latitude
- 34.4216°
- Longitude
- 134.1301°
References & Identifiers
- Nearest Port
- Ohshima, Kagawa(1.5 km)
- Admiralty No.
- M5546
- NGA No.
- 8132
- ARLHS No.
- JPN-164
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