Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Calcite Breakwater Lighthouse

Iso Red 4s🇺🇸Rogers City, USOperational

Location & Light Range

About Calcite Breakwater Lighthouse

A 14-meter square skeletal tower made of steel stands on a large concrete base. Completed in 1928, it is located at the end of the breakwater for the Port of Calcite. The lighthouse emits a red isophase light with a 4-second cycle. Its geographic range extends to 11.9 nautical miles. This structure guides vessels into the port serving the world's largest open-pit limestone quarry, southeast of Rogers City.

Why it matters: This lighthouse is critical for the safe navigation of vessels accessing the Port of Calcite, which facilitates the transport of limestone from the region's significant quarry.

Light & Optic

Characteristic Signature
Iso Red 4s
Flash Type
Isophase
Light Color
Red
Interval
4s
Raw Code
Iso R 4s
Focal Height
15m
Geographic Range
11.9NM

Construction & History

Year Built
1928

References & Identifiers

Nearest Port
Calcite(0.4 km)
USCG No.
7-11610

Tower & Structure

Tower Height
14m
Tower Shape
skeletal
Material
steel

Structure: A 14m square skeletal tower rises from a large square concrete base.

Location

City
Rogers City
Country
🇺🇸United States
Region
Michigan
Sea Region
At the end of the breakwater for the Port of Calcite, which serves the world's largest open-pit limestone quarry, southeast of Rogers City.
Latitude
45.4175°
Longitude
-83.7731°

Nearby Vessels

Flag
Type
Name
Dist.
Live tracking · 50,000+ mariners

Find Calcite Breakwater Lighthouse on the live nautical map

Plan voyages near United States, see nearby vessels in real time, and explore 14,900+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Calcite Breakwater Lighthouse at night?+
Calcite Breakwater displays the characteristic Iso Red 4s. 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 Calcite Breakwater Lighthouse guide vessels into?+
Calcite Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Calcite at 0.3 NM to the S. Other ports served include Rogers City (1.6 NM W), PRESQUE ISLE (13 NM ESE), ALPENA (26 NM SE), CHEBOYGAN (32.4 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Calcite Breakwater Lighthouse still active and maintained?+
Yes, Calcite Breakwater 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 Calcite Breakwater Lighthouse?+
You can track vessels near Calcite Breakwater 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.