KOEN
Grand Marais Light in the middle, with the lights within 20 km, in their listed colours.
Grand Marais Light — light characteristic, height, range
One white flash every 2.5 seconds
Count 2.5 seconds.Flash white, once.Begin again.
- Characteristic
- Fl W 2.5s
- Height
- 48 ft · 15 m
- Nominal range
- 12 mi = 19 km
- Structure
- White square pyramidal skeleton tower with upper part enclosed.
- Remarks
- Light Obscured from 170° to 190°. HORN: 2 blast ev 30s (2s bl-2s si-2s bl-24s si). Operates by keying the microphone five times on VHF-FM channel 83A.
- Position
- 47.7452°N, 90.3379°W · MN

Lights nearby
- Grand Marais West Breakwater Light 1One green flash every 4 seconds · 263 m
- Grand Marais Harbor Inner Breakwater Light 7One green flash every 2.5 seconds · 315 m
- MTU Grand Marais Weather Wave Buoy 1One yellow flash every 2.5 seconds · 11 km
- Taconite Harbor Range Rear LightSteady green light · 49 km
- Taconite Harbor Range Front LightSteady green light · 50 km
- Taconite Harbor West Entrance Light 4One red flash every 4 seconds · 50 km
- Taconite Harbor Harbor Of Refuge Inner LightContinuous quick red flashes · 50 km
- Taconite Harbor Harbor Of Refuge Breakwater Light 3One green flash every 4 seconds · 50 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