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Deer Island Lighthouse

Fl WR 5s🇺🇸Northern Massachusetts, USOperational

Location & Light Range

About Deer Island Lighthouse

Deer Island Lighthouse is a maritime navigation aid located in Northern Massachusetts, US. It is currently operational and active, providing guidance to vessels navigating the surrounding waters. The light sits at a focal height of 16 meters above mean sea level.

Light characteristic: The identifying signal of this lighthouse is Fl WR 5s. This means the light produces 1 flash every 5 seconds. Mariners use this distinctive pattern to positively identify the light and distinguish it from other aids to navigation in the area. The light color is wr, which may indicate a specific sector or warning zone.

Position: Deer Island Lighthouse is positioned at 42.3398°N, 70.9545°W, near Northern Massachusetts in US.

Geographic context: Deer Island Lighthouse is situated on the North Atlantic Ocean. The location falls within the temperate maritime climate zone.

Nearby lighthouses in US: Other lighthouses in the region include Abagadasset Point Range, Absecon, Admiralty Head Light, Ahukini Breakwater, Alameda County (Oakland Area) Lighthouses. View all on the Lighthouses Directory.

Nearby Ports

WINTHROP

USIHP

1.9 NMNNW

SOUTH BOSTON

USSBC

3.3 NMW

Boston

USBOS

4.4 NMWNW

Dorchester

USDZM

4.8 NMWSW

Everett

USEVT

5 NMWNW

Flash Characteristics

Characteristic Signature
Fl WR 5s
Flash Type
Flashing
Light Color
WR
Flash Count
1 flash
Interval
5s

Physical Specifications

Focal Height
16m
Light Range
Not available
Status
ACTIVE
City
Northern Massachusetts
Country
🇺🇸US
Latitude
42.3398°
Longitude
-70.9545°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Deer Island Lighthouse at night?+
Deer Island displays the characteristic Fl WR 5s — 1 wr flash every 5 seconds. Each lighthouse has a unique flash pattern published in the List of Lights, allowing mariners to positively identify it and distinguish it from other navigation aids in the area. The wr color may indicate a specific sector or warning zone.
Which ports and harbors does Deer Island Lighthouse guide vessels into?+
Deer Island Lighthouse assists vessels approaching 5 nearby ports. The closest is WINTHROP at 1.9 NM to the NNW. Other ports served include SOUTH BOSTON (3.3 NM W), Boston (4.4 NM WNW), Dorchester (4.8 NM WSW), Everett (5 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Deer Island Lighthouse still active and maintained?+
Yes, Deer Island Lighthouse is currently operational. It is actively maintained and continues to emit its characteristic light signal for marine navigation. Most modern lighthouses are automated and monitored remotely by the national maritime authority.
How can I track vessels near Deer Island Lighthouse?+
You can track vessels near Deer Island Lighthouse in real time using MarineRadar. The platform shows live AIS positions of ships in the area, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page to open the live map centered on this lighthouse.