Drag to compare unlit and lighted · live NOAA chart, not for navigation
Boston Light & the Harbor Islands
Boston Harbor
The harbor islands and the oldest light station in America, still keeping watch from Little Brewster.
A light has stood on Little Brewster Island since 1716, and the tower there now dates from 1783. Around it the harbor fills with lights of every rhythm: The Graves counting out its pairs, Deer Island alternating white and red, and the channel lights leading in past the islands to the city.
Signature lightBoston LightFl 10s 102ft 27M; FOne white flash every 10 seconds
- Frame
- 16 × 20 in
- Print scale
- 1 : 44,300
- Navigation aids
- 481
- Lights
- 152
152 lights glow on the finished chart, each through a pinhole fed by its own LED. The other 329 markers, such as daybeacons and unlit buoys, are printed on the chart.
8 light rhythms on this chart
- Flashing
- Group flashing
- Composite group
- Quick
- Occulting
- Morse code
- Alternating
- Fixed
Lights on this chart
- Boston LightOne white flash every 10 secondsFl 10s 102ft 27M; F
- The Graves LightTwo white flashes in a row, repeating every 12 secondsFl (2) 12s 98ft 14M
- Deer Island LightA steady light that alternates white and red, repeating every 10 secondsAl WR 10s 53ft 9M
- Long Island Head LightOne white flash every 2.5 secondsFl 2.5s 120ft 6M
- The Narrows Light 4One red flash every 4 secondsFl R 4s 35ft 6M
- Windmill Point Light WPQuick white flashes, about 60 a minuteQ 20ft 6M
Opens in the designer, ready to adjust the area, frame and title. Starting at $299, based on frame size, LED configuration and custom programming. Data current to November 5, 2026.