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Yobuko Kō Nagoya Bay Breakwater Lighthouse

F Red 5s🇯🇵Karatsu, JPOperational

Location & Light Range

About Yobuko Kō Nagoya Bay Breakwater Lighthouse

Constructed in 1963, this concrete cylindrical tower stands 8.5 meters tall on a breakwater at the western entrance to Nagoya Bay. The lighthouse's focal plane is 11 meters above sea level. It emits a single red flash every five seconds, visible for 10.7 nautical miles. The structure consists of a concrete post affixed to a one-story concrete equipment building. It is located near a bridge that connects the mainland to Kabe Shima.

Why it matters: This lighthouse marks the entrance to Yobuko harbor, a gateway to Nagoya Bay.

Light & Optic

Characteristic Signature
F Red 5s
Flash Type
Fixed
Light Color
Red
Interval
5s
Raw Code
F.Fl R 5s
Focal Height
11m
Geographic Range
10.7NM

Construction & History

Year Built
1963

References & Identifiers

Nearest Port
Yobuko(0.7 km)
Admiralty No.
M5267
NGA No.
12196
ARLHS No.
JPN-2355

Tower & Structure

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

Structure: concrete post attached to a 1-story concrete equipment building

Location

City
Karatsu
Country
🇯🇵Japan
Region
Saga Prefecture
Sea Region
Located at the end of a breakwater on the west side of the entrance to Nagoya Bay in Yobuko harbor, near a bridge connecting the mainland to Kabe Shima.
Latitude
33.5372°
Longitude
129.8770°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Yobuko Kō Nagoya Bay Breakwater Lighthouse at night?+
Yobuko Kō Nagoya Bay Breakwater displays the characteristic F Red 5s. 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 Yobuko Kō Nagoya Bay Breakwater Lighthouse guide vessels into?+
Yobuko Kō Nagoya Bay Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Yobuko at 0.9 NM to the ENE. Other ports served include Tobo (4.3 NM SE), Karatsu (5.5 NM SE), Fukushima, Nagasaki (11.9 NM SSW), Kafuri (14.1 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yobuko Kō Nagoya Bay Breakwater Lighthouse still active and maintained?+
Yes, Yobuko Kō Nagoya Bay 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 Yobuko Kō Nagoya Bay Breakwater Lighthouse?+
Yobuko Kō Nagoya Bay 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 Yobuko Kō Nagoya Bay Breakwater Lighthouse?+
You can track vessels near Yobuko Kō Nagoya Bay 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.