Drag to compare unlit and lighted · live NOAA chart, not for navigation
Portland Harbor & the inner islands, Maine
Portland & Casco Bay
Portland's harbor approaches and the nearby islands of Casco Bay in one close coastal portrait.
From the Portland waterfront, Casco Bay opens into channels around Peaks Island and the Diamond islands. Spring Point Ledge Light marks the harbor approach, with smaller lights tracing ledges and island passages. This portrait crop keeps the working harbor and its nearby island waters together.
Signature lightSpring Point Ledge LightFl W R 6s 54ft 12MOne white or red flash every 6 seconds (the color depends on which direction you see it from)
- Frame
- 16 × 20 in
- Print scale
- 1 : 49,200
- Navigation aids
- 207
- Lights
- 81
81 lights glow on the finished chart, each through a pinhole fed by its own LED. The other 126 markers, such as daybeacons and unlit buoys, are printed on the chart.
5 light rhythms on this chart
- Flashing
- Group flashing
- Quick
- Alternating
- Fixed
Lights on this chart
- Spring Point Ledge LightOne white or red flash every 6 seconds (the color depends on which direction you see it from)Fl W R 6s 54ft 12M
- Cow Island Ledge LightOne white flash every 6 secondsFl 6s 23ft 8M
- Crow Island Light 9One green flash every 2.5 secondsFl G 2.5s 41ft 5M
- Diamond Island Ledge LightOne white flash every 2.5 secondsFl 2.5s 24ft 5M
- Fort Scammel Point Light 2One red flash every 4 secondsFl R 4s 35ft 5M
- Coast Guard Pierhead LightOne yellow flash every 4 secondsFl Y 4s 18ft 4M
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.