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Yobuko Kō East Entrance Detached Breakwater Lighthouse

Fl Red 3s🇯🇵Karatsu, JPOperational

Location & Light Range

About Yobuko Kō East Entrance Detached Breakwater Lighthouse

This red concrete lighthouse, standing 8.5 meters tall, marks the eastern end of the detached breakwater at the entrance to Yobuko harbor. Its square tower structure is attached to a one-story concrete equipment building, with the light positioned at a focal height of 10 meters. Visible for 10.4 nautical miles, it emits a single red flash every 3 seconds. The lighthouse is located east of Kabe Shima in Saga Prefecture, Japan, approximately 0.7 kilometers from the nearest port, Yobuko.

Why it matters: This navigational aid is essential for guiding fishing vessels and other small craft safely into Yobuko harbor, clearly marking the critical eastern end of the detached breakwater.

Light & Optic

Characteristic Signature
Fl Red 3s
Flash Type
Flashing
Light Color
Red
Interval
3s
Raw Code
Fl R 3s
Focal Height
10m
Geographic Range
10.4NM

Location

City
Karatsu
Country
🇯🇵Japan
Region
Saga Prefecture
Sea Region
Located at the east end of the detached breakwater at the entrance to Yobuko harbor east of Kabe Shima.
Latitude
33.5528°
Longitude
129.8955°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

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

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

References & Identifiers

Nearest Port
Yobuko(0.7 km)
Admiralty No.
M5266.3
NGA No.
12208
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Frequently Asked Questions

How do mariners identify Yobuko Kō East Entrance Detached Breakwater Lighthouse at night?+
Yobuko Kō East Entrance Detached Breakwater displays the characteristic Fl Red 3s. 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 East Entrance Detached Breakwater Lighthouse guide vessels into?+
Yobuko Kō East Entrance Detached Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Yobuko at 0.6 NM to the S. Other ports served include Tobo (4.6 NM SSE), Karatsu (5.5 NM SE), Fukushima, Nagasaki (13.1 NM SSW), Kafuri (13.2 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yobuko Kō East Entrance Detached Breakwater Lighthouse still active and maintained?+
Yes, Yobuko Kō East Entrance Detached 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 East Entrance Detached Breakwater Lighthouse?+
Yobuko Kō East Entrance Detached 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 East Entrance Detached Breakwater Lighthouse?+
You can track vessels near Yobuko Kō East Entrance Detached 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.