KOEN
Jangguseo (장구서등대) in the middle, with the lights within 20 km, in their listed colours.
Jangguseo (장구서등대) — light characteristic, height, range
One white flash every 5 seconds
Count 5 seconds.Flash white, once.Begin again.
- Characteristic
- Fl W 5s 19m 10M
- Height
- 19 m
- Nominal range
- 10 nmi = 19 km
- Type
- Landfall / major light
- Position
- 34.7278°N, 125.8764°E · West Sea coast

Lights nearby
- Songdo (송도등대)2 white flashes every 6 seconds · 3.4 km
- Bokdo (복도등표)2 white flashes every 10 seconds · 4.5 km
- Bigeum Bridge (비금 도초 연도교 교량등)Steady green light · 5.8 km
- Bigeum Bridge (비금 도초 연도교 교량등)Steady white light · 5.8 km
- Bigeum Bridge (비금 도초 연도교 교량등)Steady red light · 5.8 km
- Bigeum Bridge (비금 도초 연도교 교량등)Steady green light · 5.8 km
- Bigeum Bridge (비금 도초 연도교 교량등)Steady white light · 5.8 km
- Bigeum Bridge (비금 도초 연도교 교량등)Steady red light · 5.8 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