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Grønsund Bagfyr Lighthouse

Iso White 4s🇩🇰Guldborgsund Municipality, DKOperational

Grønsund Bagfyr is a square skeletal tower constructed of metal and stands 19 meters tall. It is painted white and features a slatted triangular daymark. The light emits an isophase white flash on a 4-second cycle. Its focal height is 20 meters, providing a geographic range of 13.2 nautical miles. This navigational aid is located on the north coast of Falster, about 5 kilometers east of Stubbekobing in the Guldborgsund Municipality.

Why it matters: This light guides vessels through the Grønsund strait, supporting maritime activities and transport links in the region.

Characteristic Signature
Iso White 4s
Flash Type
Isophase
Light Color
White
Interval
4s
Raw Code
Iso W 4s
Focal Height
20m
Geographic Range
13.2NM
City
Guldborgsund Municipality
Country
🇩🇰Denmark
Region
Region Zealand
Sea Region
north coast of Falster, about 5 km east of Stubbekobing
Latitude
54.8871°
Longitude
12.1156°
Flag
Type
Name
Dist.
Tower Height
19m
Tower Shape
square
Tower Color
white and carrying a slatted triangular daymark
Material
metal

Structure: square skeletal tower, painted white and carrying a slatted triangular daymark

Nearest Port
Stubbekobing(2.4 km)
Admiralty No.
C2166.1
NGA No.
4476
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How do mariners identify Grønsund Bagfyr Lighthouse at night?+
Grønsund Bagfyr displays the characteristic Iso White 4s. 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 color may indicate a specific sector or warning zone.
Which ports and harbors does Grønsund Bagfyr Lighthouse guide vessels into?+
Grønsund Bagfyr Lighthouse assists vessels approaching 5 nearby ports. The closest is Stubbekøbing at 2.5 NM to the W. Other ports served include Bogo By (2.7 NM NW), KALVEHAVE HAVN (6.6 NM NNE), Stensved (7.3 NM NNW), Stege (8.1 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Grønsund Bagfyr Lighthouse still active and maintained?+
Yes, Grønsund Bagfyr 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 Grønsund Bagfyr Lighthouse?+
Grønsund Bagfyr 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 Grønsund Bagfyr Lighthouse?+
You can track vessels near Grønsund Bagfyr 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.