KOEN
Matu Sima in the middle, with the lights within 20 km, in their listed colours.
Matu Sima — light characteristic, height, range
One white flash every 3 seconds
Count 3 seconds.Flash white, once.Begin again.
- Characteristic
- Fl W 3s
- Height
- 51 m
- Nominal range
- 11 nmi = 20 km
- Type
- light major
- Position
- 34.5937°N, 134.4769°E

Lights nearby
- Boze Ko (Boze Ko)One red flash every 3 seconds · 7.2 km
- Boze Sima (Boze Sima)2 green flashes every 7 seconds · 7.3 km
- Boze Ko (Boze Ko)Steady green, brighter flash every 4 seconds · 7.4 km
- Inge Sima (院下島灯台)2 white flashes every 10 seconds · 7.4 km
- Boze Shima, N. head. (Boze Shima, N. head.)One green flash every 3 seconds · 8.1 km
- Oiso (Oiso)2 white flashes every 5 seconds · 9.3 km
- 2 green flashes every 6 seconds · 11 km
- Iesima Ko (Iesima Ko)One green flash every 3 seconds · 11 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