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Grier Channel Range Rear Lighthouse

Iso Red, White 4s🇹🇹Port of Spain, TTOperational

Location & Light Range

About Grier Channel Range Rear Lighthouse

This square skeletal tower, standing 35 meters tall and featuring a gallery, is painted orange. Its focal height reaches 50 meters above sea level, emitting an isophase red light on a 4-second cycle and a fixed white light. The light's geographic range extends to 18.7 nautical miles, serving as the rear marker for the Grier Channel range. It is located 0.8 kilometers from Port of Spain, Trinidad and Tobago's nearest port. The structure was recently relocated.

Why it matters: This range light is indispensable for guiding ships through the Grier Channel, a critical shipping route in Trinidad and Tobago. As part of a range system, it provides mariners with a clear, aligned path, preventing groundings and ensuring efficient transit.

Light & Optic

Characteristic Signature
Iso Red, White 4s
Flash Type
Isophase
Light Color
Red, White
Interval
4s
Raw Code
Iso R 4s and F W
Focal Height
50m
Geographic Range
18.7NM

Construction & History

Significant events: Relocated recently

References & Identifiers

Nearest Port
Port of Spain(0.8 km)
Admiralty No.
J5884.25
NGA No.
16190.1

Tower & Structure

Tower Height
35m
Tower Shape
square
Tower Color
orange

Structure: square skeletal tower with gallery

Location

City
Port of Spain
Country
🇹🇹Trinidad and Tobago
Sea Region
Grier Channel, Trinidad and Tobago
Latitude
10.6553°
Longitude
-61.5199°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Grier Channel Range Rear Lighthouse at night?+
Grier Channel Range Rear displays the characteristic Iso Red, 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 red, white color may indicate a specific sector or warning zone.
Which ports and harbors does Grier Channel Range Rear Lighthouse guide vessels into?+
Grier Channel Range Rear Lighthouse assists vessels approaching 5 nearby ports. The closest is Port-of-Spain at 0.4 NM to the SSE. Other ports served include Tembladora (3.9 NM WNW), Carenage (5.2 NM WNW), Chaguaramas (7.4 NM W), Freeport (13.8 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Grier Channel Range Rear Lighthouse still active and maintained?+
Yes, Grier Channel 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 Grier Channel Range Rear Lighthouse?+
You can track vessels near Grier Channel 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.