KOEN
Great Duck Island Light in the middle, with the lights within 20 km, in their listed colours.
Great Duck Island Light — light characteristic, height, range
One red flash every 5 seconds
Count 5 seconds.Flash red, once.Begin again.
- Characteristic
- Fl R 5s
- Height
- 67 ft · 20 m
- Nominal range
- 14 nmi = 26 km
- Structure
- White tower.
- Remarks
- Light partially obscured by trees from about 143° to 206.5°. HORN: 1 blast ev 15s (2s bl). MRASS-Fog signal is radio activated, during times of reduced visibility, turn marine VHF-FM radio to channel 83A/157.175Mhz. Key microphone 5 times consecutively, to activate fog signal for 60 minutes.
- Position
- 44.1420°N, 68.2458°W · ME
Lights nearby
- Long Island Lighted Gong Buoy LIMorse A (·−) in white · 7.7 km
- Cooke Aquaculture Lighted Buoy BIS DOne yellow flash every 4 seconds · 9.6 km
- Black Island Aquaculture Lighted Buoy AOne yellow flash every 2.5 seconds · 9.6 km
- Cooke Aquaculture Lighted Buoy BIS AOne yellow flash every 4 seconds · 9.6 km
- Black Island Aquaculture Lighted Buoy DOne yellow flash every 2.5 seconds · 9.7 km
- Long Ledge Lighted Gong Buoy 1One green flash every 4 seconds · 9.7 km
- Black Island Aquaculture Lighted Buoy BOne yellow flash every 2.5 seconds · 9.7 km
- Cooke Aquaculture Lighted Buoy BIS COne yellow flash every 4 seconds · 9.8 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: U.S. Coast Guard Light List (opens in a new tab) · Checked