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São Martinho do Porto Range Rear Lighthouse

Oc Red 6s🇵🇹Alcobaça, PTOperational

Location & Light Range

About São Martinho do Porto Range Rear Lighthouse

This square concrete tower stands 12 meters tall, with its light positioned at the same elevation. Mounted on a two-story equipment shelter, the structure includes a gallery. The rear range light emits a red occulting flash every six seconds. It operates in conjunction with a front range light, providing a navigational aid approximately 150 meters southeast of the São Martinho do Porto waterfront. The site is open to visitors, though the tower itself remains closed.

Why it matters: This rear range light is indispensable for safe navigation into São Martinho do Porto, providing a critical alignment aid for ships entering the harbor. Its continuous operation supports fishing and recreational traffic utilizing this distinctive coastal inlet.

Light & Optic

Characteristic Signature
Oc Red 6s
Flash Type
Occulting
Light Color
Red
Interval
6s
Raw Code
Oc R 6s
Focal Height
12m
Geographic Range
11NM

Location

City
Alcobaça
Country
🇵🇹Portugal
Region
Leiria
Sea Region
Located about 150 m southeast of the waterfront of São Martinho do Porto.
Latitude
39.5024°
Longitude
-9.1389°

References & Identifiers

Nearest Port
Nazare(5.9 km)

Tower & Structure

Tower Height
12m
Tower Shape
square
Material
concrete

Structure: post mounted atop a square 2-story concrete equipment shelter; there is a gallery atop the building

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify São Martinho do Porto Range Rear Lighthouse at night?+
São Martinho do Porto Range Rear displays the characteristic Oc Red 6s. 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 color may indicate a specific sector or warning zone.
Which ports and harbors does São Martinho do Porto Range Rear Lighthouse guide vessels into?+
São Martinho do Porto Range Rear Lighthouse assists vessels approaching 5 nearby ports. The closest is São Martinho do Porto at 0.9 NM to the NNE. Other ports served include Foz do Arelho (5.5 NM SW), NAZARE (5.8 NM NNE), Peniche (14 NM SW), Maceira (16.1 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is São Martinho do Porto Range Rear Lighthouse still active and maintained?+
Yes, São Martinho do Porto 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 São Martinho do Porto Range Rear Lighthouse?+
You can track vessels near São Martinho do Porto 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.