KOEN
Duluth Harbor South Breakwater Inner Light in the middle, with the lights within 20 km, in their listed colours.
Duluth Harbor South Breakwater Inner Light — light characteristic, height, range
One white flash every 5 seconds
Count 5 seconds.Flash white, once.Begin again.
- Characteristic
- Fl W 5s
- Height
- 68 ft · 21 m
- Nominal range
- 16 mi = 26 km
- Structure
- Black cylindrical tower with white lantern room.
- Remarks
- Light obscured from 270° through 325°.
- Position
- 46.7788°N, 92.0918°W · MN

Lights nearby
- Duluth Harbor South Breakwater Outer LightSteady green light · 361 m
- Duluth Harbor North Pier LightRed, 3 s on and 3 s off · 377 m
- Duluth Harbor Basin Lighted Buoy 3One green flash every 4 seconds · 644 m
- Harbor Cove Marina Light 3Steady green light · 705 m
- Harbor Cove Marina Light 1Steady green light · 708 m
- Harbor Cove Marina Light 2Steady red light · 733 m
- Harbor Cove Marina Light 4Steady red light · 736 m
- Duluth Harbor Basin Lighted Buoy 2One red flash every 4 seconds · 1.1 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