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Pentwater South Pierhead Lighthouse

Fl R 4s🇺🇸Michigan's Western Lower Peninsula, USOperational

Location & Light Range

About Pentwater South Pierhead Lighthouse

Constructed in 1937, this pierhead light stands 10 meters high. Its focal plane is 14.5 meters above the water. The structure emits a steady red light. This navigational aid helps guide vessels entering the channel.

Why it matters: The Pentwater South Pierhead Light is a contributing property to the National Register of Historic Places.

Light & Optic

Characteristic Signature
Fl R 4s
Flash Type
Flashing
Light Color
Red
Flash Count
1 flash
Interval
4s
Focal Height
14.5m

Construction & History

Year Built
1937
Heritage Status
National Register of Historic Places contributing property

References & Identifiers

Wikidata
Q87971112 →

Tower & Structure

Tower Height
10m

Location

City
Michigan's Western Lower Peninsula
Country
🇺🇸US
Latitude
43.7820°
Longitude
-86.4442°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Pentwater South Pierhead Lighthouse at night?+
Pentwater South Pierhead displays the characteristic Fl R 4s — 1 red 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. The red color may indicate a specific sector or warning zone.
Which ports and harbors does Pentwater South Pierhead Lighthouse guide vessels into?+
Pentwater South Pierhead Lighthouse assists vessels approaching 5 nearby ports. The closest is PENTWATER at 0.7 NM to the ESE. Other ports served include Ludington (9.9 NM N), New Era (14.7 NM SSE), Whitehall (22.9 NM S), WHITEHALL (23.3 NM S). Mariners should consult the relevant chart for full approach and pilotage information.
Is Pentwater South Pierhead Lighthouse still active and maintained?+
Yes, Pentwater South Pierhead 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 Pentwater South Pierhead Lighthouse?+
You can track vessels near Pentwater South Pierhead 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.