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Twierdza Wisłoujście (Wisłoujście Fortress) Lighthouse

Iso Red 5s🇵🇱Gdańsk, PLOperational

Location & Light Range

About Twierdza Wisłoujście (Wisłoujście Fortress) Lighthouse

Also known as: Twierdza Wisłoujście (Wisłoujście Fortress) {Weichselmünde}, Weichselmünde

This red brick, cylindrical tower stands 30 meters tall and is constructed from stone. It rises from the center of a 15th-century fortress at the mouth of the Vistula River near Gdańsk, Poland. The light emits an isophase red signal on a 5-second cycle. Visitors can access the site, which is located 0.2 kilometers from the port of Gdańsk. The lighthouse is part of the historic Wisłoujście Fortress, built in 1482.

Why it matters: The lighthouse's integration within a 15th-century fortress at the Vistula River mouth was paramount for guiding ships into the Hanseatic League port of Gdańsk, supporting the city's economic prosperity and defense for centuries.

Light & Optic

Characteristic Signature
Iso Red 5s
Flash Type
Isophase
Light Color
Red
Interval
5s
Raw Code
Iso R 5s
Light Range
6NM (11.1 km)

Construction & History

Year Built
1482

Visiting

Open to public
Yes

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
30m
Tower Shape
cylindrical
Tower Color
red brick
Material
stone

Structure: round stone tower rising from the center of a 15th century fortress

Location

City
Gdańsk
Country
🇵🇱Poland
Region
Pomeranian Voivodeship
Sea Region
mouth of the Vistula River, near Gdańsk, Poland, within the Wisłoujście Fortress
Latitude
54.3979°
Longitude
18.7243°

References & Identifiers

Nearest Port
Gdansk(0.2 km)
ARLHS No.
POL-033
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Frequently Asked Questions

How do mariners identify Twierdza Wisłoujście (Wisłoujście Fortress) Lighthouse at night?+
Twierdza Wisłoujście (Wisłoujście Fortress) displays the characteristic Iso Red 5s. 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 red color may indicate a specific sector or warning zone.
Which ports and harbors does Twierdza Wisłoujście (Wisłoujście Fortress) Lighthouse guide vessels into?+
Twierdza Wisłoujście (Wisłoujście Fortress) Lighthouse assists vessels approaching 5 nearby ports. The closest is Nowy Port/Gdansk at 2 NM to the W. Other ports served include Gdansk (2.1 NM SW), Górki Zachodnie (2.4 NM SE), Sopot (6.3 NM WNW), Gdynia (10.6 NM NW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Twierdza Wisłoujście (Wisłoujście Fortress) Lighthouse still active and maintained?+
Yes, Twierdza Wisłoujście (Wisłoujście Fortress) 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 Twierdza Wisłoujście (Wisłoujście Fortress) Lighthouse?+
Twierdza Wisłoujście (Wisłoujście Fortress) 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 Twierdza Wisłoujście (Wisłoujście Fortress) Lighthouse?+
You can track vessels near Twierdza Wisłoujście (Wisłoujście Fortress) 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.