KOEN
Gukdo (국도등대) in the middle, with the lights within 20 km, in their listed colours.
Gukdo (국도등대) — light characteristic, height, range
One white flash every 5 seconds
Count 5 seconds.Flash white, once.Begin again.
- Characteristic
- Fl W 5s 228m 11M
- Height
- 228 m
- Nominal range
- 11 nmi = 20 km
- Type
- Landfall / major light
- Position
- 34.5435°N, 128.4433°E · South Sea coast

Lights nearby
- Gukdo Hang (국도항 대명 B호 등부표)4 yellow flashes every 8 seconds · 432 m
- Gukdo Hang (국도항 대명 A호 등부표)4 yellow flashes every 8 seconds · 573 m
- Goam (고암등대)One white flash every 6 seconds · 5.9 km
- Jwasarido Weather Tower (좌사리도 통영미래 기상탑등)Morse U (··−) in white every 10 seconds · 7.5 km
- Jwasarido (좌사리도등대)One white flash every 4 seconds · 9.4 km
- Daegueulbido (대구을비도등표)2 white flashes every 5 seconds · 11 km
- Sojido (소지도등대)One white flash every 6 seconds · 11 km
- Oejangdeogam (외장덕암등표)2 white flashes every 5 seconds · 12 km
Not for navigation. Use official NOAA charts and USCG Local Notices to Mariners.
Real periods; the phase is reconstructed from a fixed clock (real lights don't keep time with each other).
Sources: KHOA light list (국립해양조사원 등대표) (opens in a new tab) · Checked