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Deer Island Light

Location: just south of Deer Island in Boston Harbor near Winthrop, MA

Photo by: Jim Tracy
Source: USBeacons

About Deer Island Light

The location of the light is just south of Deer Island in Boston Harbor. The nearest city is Winthrop, MA. The station was first established in 1890. The current lighthouse was first lit in 1982.

The lighthouse is a cylindrical tower.

The tower has alternating white and red lights at a focal plane height of 53 ft above mean high water. The light has a nominal range of 11 nautical miles. The tower height is 51 ft. The light has a period of 10 seconds.

Open to the Public?: No    Active?: Yes

Identification number: 1-10795 (U.S.)

Obscured from 112 to 186. Red danger sector from 198 to 222.
HORN: 1 blast ev 10s (1s bl).

Between October 2015 and May 2016, the brown tower was dismantled and the light was moved about 100 ft to the south of its previous concrete foundation. The new light uses LED technology and sits on a steel skeletal tower.

An 'alternating' light is a light showing different colors as it rotates. So in the 10 second period, the light alternates between white and red every 5 seconds.

NOTE: Sectors of colored glass are placed in the lanterns of some lights in order to produce a system of light sectors of different colors. In general, red sectors are used to mark shoals or to warn the mariner of other obstructions to navigation or of nearby land. Such lights provide approximate bearing information, since observers may note the change of color as they cross the boundary between sectors.

Photo by: Jim Tracy
Source: USBeacons

Today's Conditions on Site

Astronomical Info.

Astronomical Dawn: 5:31 am
Sunrise: 7:10 am
Sunset: 4:39 pm
Astronomical Dusk: 6:18 pm

Local Marine Forecast.

Small Craft Advisory is in effect until January 20 at 4:00PM EST by NWS
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... * WINDS AND SEAS...Southwest winds 10 to 20 kt with gusts up to 30 kt. Waves around 2 feet.

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