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Alim Island Lighthouse

Fl W 5s🇵🇬Papua New Guinea (Bismarck Archipelago), PGOperational

Location & Light Range

About Alim Island Lighthouse

This white latticed tower stands 102 meters tall, with a focal height of 31 meters. It emits a white flash every 5 seconds, visible for a geographic range of 10 nautical miles. The structure is a tapered square skeletal tower painted white. Alim Island is an atoll located in the Bismarck Sea, approximately 50 kilometers south of Manus. Access to the island is exclusively by boat.

Light & Optic

Characteristic Signature
Fl W 5s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
5s
Raw Code
Fl.W. period 5s
Focal Height
31m
Geographic Range
10NM

Location

City
Papua New Guinea (Bismarck Archipelago)
Country
🇵🇬PG
Latitude
-2.8943°
Longitude
147.0572°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
102m
Tower Shape
square
Tower Color
white

Structure: White latticed tower; 102. NORTH PACIFIC ISLANDS

References & Identifiers

Admiralty No.
K3476
NGA No.
111-10928
ARLHS No.
PAP-013
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Frequently Asked Questions

How do mariners identify Alim Island Lighthouse at night?+
Alim Island displays the characteristic Fl W 5s — 1 white flash every 5 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.
Is Alim Island Lighthouse still active and maintained?+
Yes, Alim Island 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.
How can I track vessels near Alim Island Lighthouse?+
You can track vessels near Alim Island 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.