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Matsuyama Kō Inner Breakwater Lighthouse

Oc Red 4s🇯🇵Matsuyama, JPOperational

Location & Light Range

About Matsuyama Kō Inner Breakwater Lighthouse

Also known as: #Matsuyama Kō Inner Breakwater

This red, cylindrical concrete post light stands 8.5 meters tall and reaches a focal height of 11 meters. It is situated at the end of a breakwater leading into Matsuyama's inner harbor, marking the entrance to the port. The structure includes a 1-story concrete equipment room. Its light exhibits a single red flash every 4 seconds and has a geographic range of 10.7 nautical miles. The original structure at this location was replaced in 2018, but the site remains accessible to the public, although the tower itself is closed.

Why it matters: The light provides a clear navigational marker for vessels entering Matsuyama's inner harbor, mitigating risks associated with navigating the confined port entrance.

Light & Optic

Characteristic Signature
Oc Red 4s
Flash Type
Occulting
Light Color
Red
Interval
4s
Raw Code
Oc R 4s
Focal Height
11m
Geographic Range
10.7NM

Construction & History

Significant events: Replaced in 2018

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
8.5m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: An 8.5m red concrete post light, cylindrical in shape, attached to a 1-story concrete equipment room.

Location

City
Matsuyama
Country
🇯🇵Japan
Region
Ehime Prefecture
Sea Region
At the end of a short breakwater at the entrance to Matsuyama's inner harbor.
Latitude
33.8681°
Longitude
132.7075°

References & Identifiers

Nearest Port
Matsuyama(0.6 km)
Admiralty No.
M5434
NGA No.
9244
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Frequently Asked Questions

How do mariners identify Matsuyama Kō Inner Breakwater Lighthouse at night?+
Matsuyama Kō Inner Breakwater displays the characteristic Oc 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 Matsuyama Kō Inner Breakwater Lighthouse guide vessels into?+
Matsuyama Kō Inner Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Matsuyama at 0.6 NM to the NNE. Other ports served include Masaki (1.2 NM SSW), Mitsuhama (1.2 NM SSW), Hojo (7.5 NM NNE), Kikuma (11.8 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Matsuyama Kō Inner Breakwater Lighthouse still active and maintained?+
Yes, Matsuyama Kō Inner 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 Matsuyama Kō Inner Breakwater Lighthouse?+
Matsuyama Kō Inner 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 Matsuyama Kō Inner Breakwater Lighthouse?+
You can track vessels near Matsuyama Kō Inner 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.