KOEN
Round Island Passage Light in the middle, with the lights within 20 km, in their listed colours.
Round Island Passage Light — light characteristic, height, range
One red flash every 5 seconds
Count 5 seconds.Flash red, once.Begin again.
- Characteristic
- Fl R 5s
- Height
- 71 ft · 22 m
- Nominal range
- 11 mi = 18 km
- Structure
- Lighthouse.
- Remarks
- HORN: 1 blast ev 30s (3s bl). Operates by keying the microphone 5 times on VHF-FM channel 83A.
- Position
- 45.8430°N, 84.6154°W · MI
Lights nearby
- Mackinac Island West Breakwater Light 1One green flash every 2.5 seconds · 159 m
- Round Island Lighted Buoy 3One green flash every 4 seconds · 573 m
- Round Island Shoal Lighted Buoy 5Continuous quick green flashes · 577 m
- Coal Dock Pierhead LightSteady white light · 593 m
- Mackinac Island East Breakwater Light 2One red flash every 2.5 seconds · 594 m
- Passenger Pierhead LightSteady red light · 613 m
- Old Round Island Point Light2 white flashes every 10 seconds · 715 m
- Mission Point Lighted Bell Buoy 2Continuous quick red flashes · 1.4 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