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St. Marks Lighthouse

Occ W 4s🇺🇸Western Florida, USOperational

Location & Light Range

About St. Marks Lighthouse

Construction of the St. Marks Light was completed in 1831. The tower stands 22 meters tall, with its light positioned 25 meters above sea level. This light emits a white signal. The structure is situated on the east side of the St. Marks River mouth, overlooking Apalachee Bay. It has been operational since its first lighting in 1831.

Why it matters: This lighthouse is listed on the National Register of Historic Places and is the second-oldest light station in Florida.

Background
The St. Marks Light is the second-oldest light station in Florida, United States. It is located on the east side of the mouth of the St. Marks River, on Apalachee Bay.

Light & Optic

Characteristic Signature
Occ W 4s
Flash Type
Occ
Light Color
White
Flash Count
1 flash
Interval
4s
Focal Height
25m

Construction & History

Year Built
1831
Heritage Status
National Register of Historic Places listed place

References & Identifiers

Wikipedia
Read on Wikipedia →
Wikidata
Q7589995 →

Tower & Structure

Tower Height
22m

Location

City
Western Florida
Country
🇺🇸US
Latitude
30.0738°
Longitude
-84.1796°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify St. Marks Lighthouse at night?+
St. Marks displays the characteristic Occ W 4s — 1 white flash every 4 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.
Which ports and harbors does St. Marks Lighthouse guide vessels into?+
St. Marks Lighthouse assists vessels approaching 3 nearby ports. The closest is Carrabelle at 28.8 NM to the WSW. Other ports served include SPORTSMAN LODGE (42.5 NM WSW), Apalachicola (47.1 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is St. Marks Lighthouse still active and maintained?+
Yes, St. Marks 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 St. Marks Lighthouse?+
You can track vessels near St. Marks 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.