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Outer Sister Island Lighthouse

Fl (2) White 8s🇦🇺Flinders Council, AUOperational

Location & Light Range

About Outer Sister Island Lighthouse

A white, cylindrical fiberglass tower stands 4 meters tall on Outer Sister Island, which marks the northern end of the Furneaux Group. The light is positioned at a focal height of 173 meters and emits a white flash every 8 seconds. This automated light offers a geographic range of 31.6 nautical miles. The lighthouse is situated 35.9 kilometers from Flinders Island, the nearest port.

Why it matters: This light is essential for safe passage through the northern Furneaux Group, a hazard to shipping in Bass Strait.

Light & Optic

Characteristic Signature
Fl (2) White 8s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
8s
Raw Code
Fl W 8s
Focal Height
173m
Geographic Range
31.6NM

Location

City
Flinders Council
Country
🇦🇺Australia
Region
Tasmania
Sea Region
Outer Sister Island, marking the northern end of the Furneaux Group
Latitude
-39.6492°
Longitude
147.9990°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
4m
Tower Shape
cylindrical
Tower Color
white
Material
fiberglass

Structure: round white fiberglass tower

References & Identifiers

Nearest Port
Flinders island(35.9 km)
Admiralty No.
K3600.5
NGA No.
6630
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Frequently Asked Questions

How do mariners identify Outer Sister Island Lighthouse at night?+
Outer Sister Island displays the characteristic Fl (2) White 8s — 2 white flashes every 8 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. The white color may indicate a specific sector or warning zone.
Which ports and harbors does Outer Sister Island Lighthouse guide vessels into?+
Outer Sister Island Lighthouse assists vessels approaching 2 nearby ports. The closest is FLINDERS ISLAND at 35.9 NM to the SSE. Other ports served include CAPE BARREN (43.1 NM S). Mariners should consult the relevant chart for full approach and pilotage information.
Is Outer Sister Island Lighthouse still active and maintained?+
Yes, Outer Sister 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 Outer Sister Island Lighthouse?+
You can track vessels near Outer Sister 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.