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Shag Reef Range Rear Lighthouse

L White 4s🇳🇿Banks Peninsula Community, NZOperational

Location & Light Range

About Shag Reef Range Rear Lighthouse

This cylindrical concrete tower, painted red, stands 18 meters tall and was first lit in 2018. It is situated on a rocky reef approximately 963 meters west of the Shag Reef Range Front light. The lighthouse emits a long flashing white light with a 4-second cycle. Its focal plane is also at 18 meters above sea level, providing a geographic range of 12.7 nautical miles. The site is managed by the Lyttelton Port Corporation and is open for visitors to view from a distance, though the tower is closed to the public.

Why it matters: This rear range light, working with its front counterpart, establishes a navigational line for vessels approaching Lyttelton, marking a hazardous rocky reef.

Light & Optic

Characteristic Signature
L White 4s
Flash Type
L
Light Color
White
Interval
4s
Raw Code
L Fl W 4s
Focal Height
18m
Geographic Range
12.7NM

Construction & History

Year Built
2018

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
18m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: round red tower

Location

City
Banks Peninsula Community
Country
🇳🇿New Zealand
Region
Canterbury
Sea Region
rocky reef, 963 m west of the front light, operated by Lyttelton Port Corporation, New Zealand
Latitude
-43.6128°
Longitude
172.7059°

References & Identifiers

Nearest Port
Lyttelton(0.6 km)
Admiralty No.
K4290.1
NGA No.
5260
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Frequently Asked Questions

How do mariners identify Shag Reef Range Rear Lighthouse at night?+
Shag Reef Range Rear displays the characteristic L 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 Shag Reef Range Rear Lighthouse guide vessels into?+
Shag Reef Range Rear Lighthouse assists vessels approaching 3 nearby ports. The closest is Lyttelton at 0.6 NM to the ENE. Other ports served include Rolleston (14.1 NM W), Akaroa (16.1 NM SE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Shag Reef Range Rear Lighthouse still active and maintained?+
Yes, Shag Reef 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.
How can I track vessels near Shag Reef Range Rear Lighthouse?+
You can track vessels near Shag Reef 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.