KOEN
Calumet Harbor Breakwater South End Light in the middle, with the lights within 20 km, in their listed colours.
Calumet Harbor Breakwater South End Light — light characteristic, height, range
One red flash every 10 seconds
Count 10 seconds.Flash red, once.Begin again.
- Characteristic
- Fl R 10s
- Height
- 50 ft · 15 m
- Nominal range
- 16 mi = 26 km
- Structure
- White square skeleton tower with red band. Lower half open.
- Remarks
- HORN: 1 blast ev 15s (2s bl). Operates by keying microphone five times on VHF-FM Ch. 83A.
- Position
- 41.7260°N, 87.4933°W · IN

Lights nearby
- Calumet Harbor Lighted Buoy 1One green flash every 4 seconds · 854 m
- Calumet Harbor Entrance South Side LightOne green flash every 4 seconds · 1.5 km
- Calumet Harbor Lighted Buoy 7One green flash every 4 seconds · 1.6 km
- Calumet Harbor LightOne red flash every 2.5 seconds · 1.7 km
- Calumet East Shoal Lighted Buoy 4One red flash every 6 seconds · 2.0 km
- Hammond Intake Crib LightOne white flash every 6 seconds · 2.4 km
- Calumet Harbor Breakwater Obstruction LightOne yellow flash every 2.5 seconds · 2.5 km
- Calumet Harbor Disposal Area LightOne green flash every 6 seconds · 2.7 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: U.S. Coast Guard Light List (opens in a new tab) · Checked