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Katsuura Kō South Breakwater Lighthouse

Oc Red 6s🇯🇵Katsuura, JPOperational

Location & Light Range

About Katsuura Kō South Breakwater Lighthouse

This concrete lighthouse stands on the end of Katsuura's south breakwater, offering a geographic range of 11 nautical miles. The structure consists of an 8.5-meter red concrete post atop a square, one-story equipment shelter. Its focal height reaches 12 meters above the water. The light emits an occulting red signal, with a 6-second cycle. The lighthouse is operational and located within the harbor sheltered by Katsuura Saki. The site is accessible to the public, though the tower itself remains closed.

Why it matters: The lighthouse distinctly marks the end of the south breakwater, guiding local fishing fleets and other vessels into the sheltered port of Katsuura.

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
Katsuura
Country
🇯🇵Japan
Region
Chiba Prefecture
Sea Region
End of the south breakwater of the harbor sheltered by Katsuura Saki.
Latitude
35.1435°
Longitude
140.3097°

References & Identifiers

Nearest Port
Katsuura, Chiba(0.1 km)
Admiralty No.
M6470.14
NGA No.
4840
ARLHS No.
JPN-1318

Tower & Structure

Tower Height
8.5m
Tower Color
red
Material
concrete

Structure: A 8.5m concrete post attached to a square 1-story concrete equipment shelter, painted red.

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 Katsuura Kō South Breakwater Lighthouse at night?+
Katsuura Kō South Breakwater 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 Katsuura Kō South Breakwater Lighthouse guide vessels into?+
Katsuura Kō South Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Wakura at 0.9 NM to the ENE. Other ports served include Okitsu, Chiba (3 NM WSW), Abuto (11 NM WSW), Wada (15.9 NM WSW), Kazusaminato (22.2 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Katsuura Kō South Breakwater Lighthouse still active and maintained?+
Yes, Katsuura Kō South 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.
What shipping routes pass near Katsuura Kō South Breakwater Lighthouse?+
Katsuura Kō South Breakwater Lighthouse is located within the Japan / Korea shipping lane — a busy shipping corridor linking the major ports of Japan and South Korea. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Katsuura Kō South Breakwater Lighthouse?+
You can track vessels near Katsuura Kō South 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.