KOEN
Hog Island Shoal Light in the middle, with the lights within 20 km, in their listed colours.
Hog Island Shoal Light — light characteristic, height, range
White, 3 s on and 3 s off
On for 3 seconds.Off for 3 seconds.Begin again.
- Characteristic
- Iso W 6s
- Height
- 54 ft · 16 m
- Nominal range
- 12 nmi = 22 km
- Structure
- White conical tower on black cylindrical pier.
- Remarks
- HORN: 2 blasts ev 30s (2sbl-2s si-2s bl-24s si) 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
- 41.6324°N, 71.2732°W · RI

Lights nearby
- Mount Hope Bay Approach Lighted Bell Buoy 3One green flash every 4 seconds · 317 m
- Musselbed Shoals Light 6AOne red flash every 6 seconds · 1.2 km
- Musselbed Shoals Directional LightSteady white light · 1.2 km
- Carnegie Abbey Yacht Club Channel Light 3Steady green light · 1.7 km
- Carnegie Abbey Yacht Club Channel Light 4Steady red light · 1.7 km
- Mount Hope Bay Approach Lighted Buoy 2One red flash every 2.5 seconds · 1.7 km
- Providence River Approach Channel Lighted Buoy 1One green flash every 2.5 seconds · 2.4 km
- Sandy Point Junction Lighted Bell Buoy SP2+1 red flashes every 6 seconds · 2.5 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