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Ilha Rasa Lighthouse

Fl WR 5s🇧🇷Southeastern Brazil, BROperational

Location & Light Range

About Ilha Rasa Lighthouse

Constructed in 1829, Ilha Rasa Lighthouse stands 26 meters tall, with its light reaching 101 meters above sea level. The structure features a white cylindrical tower atop a three-story quadrangular base, both built of masonry. It houses one of only two known meso-radiant Fresnel lenses manufactured by Barbier & Bernard. The light emits two white flashes followed by one red flash every 15 seconds. The white light has a range of 51 nautical miles, while the red light extends to 45 nautical miles.

Why it matters: This lighthouse, alongside the Abrolhos lighthouse, is recognized as one of the most powerful maritime lights globally.

Light & Optic

Characteristic Signature
Fl WR 5s
Flash Type
Flashing
Light Color
WR
Flash Count
1 flash
Interval
5s
Raw Code
Fl.W.W.R. period 15s
Focal Height
101m

Construction & History

Year Built
1829

References & Identifiers

Admiralty No.
G0360
NGA No.
18372
Wikipedia
Read on Wikipedia →
Wikidata
Q10280116 →
OpenStreetMap
View on OSM →

Tower & Structure

Tower Height
26m

Location

City
Southeastern Brazil
Country
🇧🇷BR
Latitude
-23.0638°
Longitude
-43.1464°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Ilha Rasa Lighthouse at night?+
Ilha Rasa displays the characteristic Fl WR 5s — 1 wr 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. The wr color may indicate a specific sector or warning zone.
Which ports and harbors does Ilha Rasa Lighthouse guide vessels into?+
Ilha Rasa Lighthouse assists vessels approaching 5 nearby ports. The closest is Niterói at 11.2 NM to the N. Other ports served include Sao Cristovao (12.9 NM N), Rio de Janeiro (13 NM N), Ilha d'Agua (14.6 NM N), São Gonçalo (16.5 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ilha Rasa Lighthouse still active and maintained?+
Yes, Ilha Rasa 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 Ilha Rasa Lighthouse?+
You can track vessels near Ilha Rasa 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.