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Strömsviken Övre Lighthouse

Fl (4) White/Red/Green 12s🇸🇪Norrtälje kommun, SEOperational

Location & Light Range

About Strömsviken Övre Lighthouse

Built in 1962, Strömsviken Övre is a 12-meter square skeletal steel tower painted white. It stands on a small island in the middle of the Väddö Kanal, guiding vessels northbound approximately 4 km south of the channel's northern limit. The lighthouse emits four flashes of white, red, or green light every 12 seconds, with a geographic range of 11 nautical miles. The site is open to visitors arriving by boat, though the tower itself remains closed. The nearest port is Hallstavik, 3.4 km away.

Why it matters: The Strömsviken Övre lighthouse provides precise directional guidance for northbound traffic within the Väddö Kanal, a critical inland waterway supporting regional commerce and recreational boating.

Light & Optic

Characteristic Signature
Fl (4) White/Red/Green 12s
Flash Type
Flashing
Light Color
White/Red/Green
Flash Count
4 flashes
Interval
12s
Raw Code
Fl(4) WRG 12s
Focal Height
12m
Light Range
8NM (14.8 km)
Geographic Range
11NM

Construction & History

Year Built
1962

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
12m
Tower Shape
square
Tower Color
white
Material
steel

Structure: square skeletal tower, painted white

Location

City
Norrtälje kommun
Country
🇸🇪Sweden
Region
Stockholm County
Sea Region
Located on a small island in the middle of the Väddö Kanal, about 4 km south of the north end, guiding vessels northbound.
Latitude
60.1192°
Longitude
18.5780°

References & Identifiers

Nearest Port
Hallstavik(3.4 km)
Admiralty No.
C6309.1
NGA No.
10123
ARLHS No.
SWE-340
Wikidata
Q34769715 →
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Frequently Asked Questions

How far offshore can Strömsviken Övre Lighthouse be seen?+
With a focal height of 12 meters and a nominal range of 8 nautical miles (approximately 14.8 km), Strömsviken Övre is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. This range makes it a significant coastal navigation aid for vessels transiting the area.
How do mariners identify Strömsviken Övre Lighthouse at night?+
Strömsviken Övre displays the characteristic Fl (4) White/Red/Green 12s — 4 white/red/green flashes every 12 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 white/red/green color may indicate a specific sector or warning zone.
Which ports and harbors does Strömsviken Övre Lighthouse guide vessels into?+
Strömsviken Övre Lighthouse assists vessels approaching 5 nearby ports. The closest is Hallstavik at 4.2 NM to the S. Other ports served include Hargshamn (4.4 NM NW), Grisslehamn (7.7 NM E), Forsmark (19.6 NM NW), Norrtälje (22.6 NM S). Mariners should consult the relevant chart for full approach and pilotage information.
Is Strömsviken Övre Lighthouse still active and maintained?+
Yes, Strömsviken Övre 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.
What shipping routes pass near Strömsviken Övre Lighthouse?+
Strömsviken Övre Lighthouse is located within the Baltic Sea trade route — a vital shipping corridor for trade between Scandinavian, German, Polish, and Baltic state ports. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Strömsviken Övre Lighthouse?+
You can track vessels near Strömsviken Övre 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.