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När Lighthouse

LFl White/Red 8s🇸🇪Gotland Municipality, SEOperational

Location & Light Range

About När Lighthouse

The När Lighthouse, built in 1872, is a 16-meter cylindrical tower constructed of cast iron. It features a red exterior with narrow horizontal white bands and is topped by a lantern room and gallery. The lighthouse emits a long white or red flash every 8 seconds. It stands on a promontory located about 13 kilometers east of Ronehamn in Gotland County, Sweden. The structure's focal height reaches 21 meters, providing a geographic range of 13.4 nautical miles.

Why it matters: The lighthouse marks a significant promontory and guides vessels through coastal waters with its directional long flash. Its history includes a period as a private residence before military acquisition.

Light & Optic

Characteristic Signature
LFl White/Red 8s
Flash Type
Long Flash
Light Color
White/Red
Interval
8s
Raw Code
LFl WR 8s
Focal Height
21m
Geographic Range
13.4NM

Construction & History

Year Built
1872

Significant events: Sold as a private residence, later acquired by the military

References & Identifiers

Nearest Port
Ronehamn(6.8 km)

Tower & Structure

Tower Height
16m
Tower Shape
cylindrical
Tower Color
red with narrow white horizontal bands
Material
cast iron

Structure: round cast iron tower with lantern and gallery

Location

City
Gotland Municipality
Country
🇸🇪Sweden
Region
Gotland County
Sea Region
Located on a promontory about 13 km east of Ronehamn, Sweden
Latitude
57.2182°
Longitude
18.6811°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify När Lighthouse at night?+
När displays the characteristic LFl White/Red 8s. 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 color may indicate a specific sector or warning zone.
Which ports and harbors does När Lighthouse guide vessels into?+
När Lighthouse assists vessels approaching 5 nearby ports. The closest is Tomtbod at 5.2 NM to the WSW. Other ports served include Ronehamn (7.1 NM WSW), Klintehamn (19 NM NW), Visby (27.8 NM NNW), Slite (30.2 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is När Lighthouse still active and maintained?+
Yes, När 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 När Lighthouse?+
När 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 När Lighthouse?+
You can track vessels near När 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.