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Triple Islands Lighthouse

Fl (2) White 9s🇨🇦Area C (South Skeena), CAOperational

Location & Light Range

About Triple Islands Lighthouse

Built in 1920, the Triple Islands Lighthouse is a cylindrical concrete tower standing 22 meters tall. It is situated on the northwesternmost of three rocky islets that mark the entrance to the Brown Passage. This passage connects the Dixon Entrance to Prince Rupert, approximately 40 km to the east. The lighthouse features an octagonal cylindrical concrete tower topped with a lantern and gallery, attached to a two-story keeper's house. Its light emits two white flashes every 9 seconds and has a geographic range of 14.9 nautical miles from a focal height of 28 meters. The Canadian Coast Guard currently manages the operational light.

Why it matters: Triple Islands Lighthouse is essential for guiding vessels through the Brown Passage, an important route between the Dixon Entrance and the port of Prince Rupert. Its placement directly addresses the navigational challenges of this specific coastal approach.

Light & Optic

Characteristic Signature
Fl (2) White 9s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
9s
Raw Code
Fl(2) W 9s
Focal Height
28m
Geographic Range
14.9NM

Construction & History

Year Built
1920

References & Identifiers

Nearest Port
Prince Rupert(19.0 km)
Admiralty No.
G5812
NGA No.
11460
ARLHS No.
CAN-508

Tower & Structure

Tower Height
22m
Tower Shape
cylindrical
Material
concrete

Structure: octagonal cylindrical concrete tower with lantern and gallery, attached to a 2-story concrete keeper's house

Location

City
Area C (South Skeena)
Country
🇨🇦Canada
Region
British Columbia
Sea Region
Northwesternmost of three rocky islets marking the entrance to the Brown Passage, which leads from the Dixon Entrance to Prince Rupert, about 40 km west of the town.
Latitude
54.2944°
Longitude
-130.8801°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Triple Islands Lighthouse at night?+
Triple Islands displays the characteristic Fl (2) White 9s — 2 white flashes every 9 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 Triple Islands Lighthouse guide vessels into?+
Triple Islands Lighthouse assists vessels approaching 3 nearby ports. The closest is Prince Rupert at 19.2 NM to the E. Other ports served include Port Simpson (22.6 NM NE), Masset (47.7 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Triple Islands Lighthouse still active and maintained?+
Yes, Triple Islands 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 Triple Islands Lighthouse?+
You can track vessels near Triple Islands 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.