KOEN
Plymouth Light in the middle, with the lights within 20 km, in their listed colours.
Plymouth Light — light characteristic, height, range
3 white flashes every 30 seconds
Count 30 seconds.Flash white, 3 times.Begin again.
- Characteristic
- Fl (3)W 30s
- Height
- 102 ft · 31 m
- Nominal range
- 17 nmi = 31 km
- Structure
- White, octagonal, pyramidal tower, white dwelling.
- Remarks
- Red from 323° to 352°, covers Mary Ann Rocks. Emergency light of reduced intensity when main light is extinguished. HORN: 2 blasts ev 15s (3s 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 45 minutes.
- Position
- 42.0037°N, 70.6006°W · MA
Lights nearby
- Plymouth Bay Channel Lighted Buoy 3One green flash every 4 seconds · 975 m
- Plymouth Bay Entrance Lighted Bell Buoy 1Continuous quick green flashes · 1.3 km
- Plymouth Bay Channel Lighted Buoy 5One green flash every 2.5 seconds · 1.5 km
- Duxbury Bay Channel Lighted Buoy 6One red flash every 4 seconds · 3.9 km
- Duxbury Pier Light2 red flashes every 5 seconds · 4.4 km
- Plymouth Harbor Channel Lighted Bell Buoy 9One green flash every 4 seconds · 4.9 km
- Duxbury Bay Channel Lighted Buoy 10One red flash every 4 seconds · 5.0 km
- Plymouth Harbor Channel Light 12Continuous quick red flashes · 5.4 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