KOEN
Bogskär in the middle, with the lights within 20 km, in their listed colours.
Bogskär — light characteristic, height, range
3 white flashes every 20 seconds
Count 20 seconds.Flash white, 3 times.Begin again.
- Characteristic
- Fl (3) W 20s
- Height
- 28 m
- Nominal range
- 8.8 nmi = 16 km
- Type
- Merimajakka
- Position
- 59.5045°N, 20.3475°E

Lights nearby
- Svenska BjörnOne long white flash every 8 seconds · 19 km
- Svenska BjörnContinuous quick white flashes · 19 km
- Halder6 very quick white flashes + one long every 10 seconds · 25 km
- Armbågen Östra3 very quick white flashes every 5 seconds · 26 km
- Suomen Leijona2 white flashes every 12 seconds · 27 km
- Tröskeln Östra2 very quick white flashes every 4 seconds · 30 km
- Tröskeln Västra3 very quick white flashes every 5 seconds · 32 km
- FästornaOne white flash every 5 seconds (colours listed: white, red, green) · 39 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: Väylävirasto aids to navigation (Finnish Transport Infrastructure Agency) (opens in a new tab) · Checked