KOEN
Tvistein in the middle, with the lights within 20 km, in their listed colours.
Tvistein — light characteristic, height, range
White, dark once every 4 seconds (colours listed: white, red, green)
Keep the white light on.Every 4 seconds, go dark once.Begin again.
- Characteristic
- Oc WRG 4s
- Height
- 17 m
- Nominal range
- 10.4 nmi = 19 km
- Type
- Fyrstasjon
- Position
- 58.9381°N, 9.9363°E · Sørøst

Lights nearby
- NevlunghavnWhite, dark 2 times every 8 seconds (colours listed: white, red, green) · 4.9 km
- FinnebåenOne green flash every 3 seconds · 7.2 km
- Rakkebåene3 quick white flashes every 10 seconds · 7.7 km
- ÅmlirognaWhite, dark 2 times every 8 seconds (colours listed: white, red, green) · 8.2 km
- StavernsoddenWhite, dark 3 times every 10 seconds (colours listed: white, red, green) · 8.6 km
- VadholmenWhite, dark once every 6 seconds (colours listed: white, red, green) · 8.7 km
- LammøybåenRed, 2 s on and 2 s off · 9.1 km
- One white flash every 2 seconds · 9.1 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: Kystverket navigation aids (Norwegian Coastal Administration) (opens in a new tab) · Checked