KOEN
Ōkunoshima Lighthouse (大久野島灯台) in the middle, with the lights within 20 km, in their listed colours.
Ōkunoshima Lighthouse (大久野島灯台) — light characteristic, height, range
White, 3 s on and 3 s off (colours listed: white, red)
On for 3 seconds.Off for 3 seconds.Begin again.
- Characteristic
- Iso WR 6s
- Height
- 21 m
- Nominal range
- 14 nmi = 26 km
- Type
- light major
- Position
- 34.3027°N, 132.9938°E

Lights nearby
- Morse A (·−) in red every 8 seconds · 3.6 km
- One green flash every 3 seconds · 5.5 km
- 6 quick white flashes + one long every 15 seconds · 6.3 km
- Takehara Ko (Takehara Ko)One green flash every 3 seconds · 7.7 km
- Green, 3 s on and 3 s off · 7.9 km
- One red flash every 3 seconds · 10 km
- Nagase Hana (ナガセ鼻灯台)White, 3 s on and 3 s off · 21 km
- Kuru Sima (Kuru Sima)2 white flashes every 7 seconds · 23 km
Not for navigation. Use the country's official charts and Notices to Mariners.
Real periods; the phase is reconstructed from a fixed clock (real lights don't keep time with each other).
Sources: OpenStreetMap seamarks (OSM) (opens in a new tab) · Checked