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Borgmästargrund Range Rear Lighthouse

Fl White 3.5s🇫🇮Larsmo, FIOperational

Location & Light Range

About Borgmästargrund Range Rear Lighthouse

Also known as: Hällören

This concrete skeletal tower stands 18 meters tall and has a focal height of 20 meters. It is painted red with a single white horizontal band. The structure is a triangular cylindrical skeletal tower topped with a large daymark that is red with a yellow vertical stripe. The light emits a white flash every 3.5 seconds. Its geographic range extends to 13.2 nautical miles. The site is open to the public, though the tower itself is closed.

Why it matters: This range rear light, functioning with a front light, establishes a precise navigational line for vessels. This alignment is essential for maintaining safe passage within designated channels.

Light & Optic

Characteristic Signature
Fl White 3.5s
Flash Type
Flashing
Light Color
White
Interval
3.5s
Raw Code
Fl W 3.5s
Focal Height
20m
Geographic Range
13.2NM

Location

City
Larsmo
Country
🇫🇮Finland
Region
Ostrobothnia
Sea Region
A range rear light in Finland, guiding vessels along a specific channel or approach.
Latitude
63.7515°
Longitude
22.5233°

References & Identifiers

Nearest Port
Pietarsaari(6.0 km)
Admiralty No.
C4216.1
NGA No.
18212
ARLHS No.
FIN-065

Tower & Structure

Tower Height
18m
Tower Shape
cylindrical
Tower Color
red with one white horizontal band
Material
concrete

Structure: triangular cylindrical skeletal tower carrying a large daymark colored red with a yellow vertical stripe

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Borgmästargrund Range Rear Lighthouse at night?+
Borgmästargrund Range Rear displays the characteristic Fl White 3.5s. 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Borgmästargrund Range Rear Lighthouse guide vessels into?+
Borgmästargrund Range Rear Lighthouse assists vessels approaching 5 nearby ports. The closest is Pietarsaari (Jakobstad) at 5.1 NM to the ESE. Other ports served include Alholmen (5.6 NM ESE), BOSUND (10.4 NM ENE), Uusikaarlepyy (Nykarleby) (13.1 NM S), Yxpila (14.4 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Borgmästargrund Range Rear Lighthouse still active and maintained?+
Yes, Borgmästargrund Range Rear 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 Borgmästargrund Range Rear Lighthouse?+
Borgmästargrund Range Rear 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 Borgmästargrund Range Rear Lighthouse?+
You can track vessels near Borgmästargrund Range Rear 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.