KOEN
Sudo (수도등대) in the middle, with the lights within 20 km, in their listed colours.
Sudo (수도등대) — light characteristic, height, range
One white flash every 6 seconds
Count 6 seconds.Flash white, once.Begin again.
- Characteristic
- Fl W 6s 15m 10M
- Height
- 15 m
- Nominal range
- 10 nmi = 19 km
- Type
- Landfall / major light
- Position
- 35.0823°N, 126.1437°E · West Sea coast

Lights nearby
- Sudo (수도 계선 등부표)One white flash every 6 seconds · 541 m
- Imja 2 Bridge (임자 2대교 교량등)Green, 2 s on and 2 s off · 879 m
- Imja 2 Bridge (임자 2대교 교량등)Green, 2 s on and 2 s off · 879 m
- Imja 2 Bridge (임자 2대교 교량등)White, 2 s on and 2 s off · 879 m
- Imja 2 Bridge (임자 2대교 교량등)White, 2 s on and 2 s off · 879 m
- Imja 2 Bridge (임자 2대교 교량등)Red, 2 s on and 2 s off · 879 m
- Imja 2 Bridge (임자 2대교 교량등)Red, 2 s on and 2 s off · 879 m
- Imja 2 Bridge (임자 2대교 교량등)Yellow, 2 s on and 2 s off · 879 m
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