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Ushibuka West Outer Breakwater Lighthouse

Fl (2) Green 6s🇯🇵Amakusa, JPOperational

Location & Light Range

About Ushibuka West Outer Breakwater Lighthouse

This cylindrical concrete tower, built in 1983, stands 11 meters tall at the south end of Ushibuka's detached outer breakwater. Its top section flares outward, and it displays a green flashing light every 6 seconds. The lighthouse is situated 1.7 kilometers from the main port of Ushibuka in Kumamoto Prefecture. Its focal plane is 15 meters above the water, providing a geographic range of 11.9 nautical miles. This active navigational aid guides vessels entering and leaving the western harbor.

Why it matters: The light is essential for safe navigation into and out of Ushibuka's main western harbor, especially around the breakwater, supporting the local fishing industry.

Light & Optic

Characteristic Signature
Fl (2) Green 6s
Flash Type
Flashing
Light Color
Green
Flash Count
2 flashes
Interval
6s
Raw Code
Fl G 6s
Focal Height
15m
Geographic Range
11.9NM

Construction & History

Year Built
1983

References & Identifiers

Nearest Port
Ushibuka(1.7 km)
Admiralty No.
M5119
NGA No.
11354

Tower & Structure

Tower Height
11m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round concrete tower, flared at the top

Location

City
Amakusa
Country
🇯🇵Japan
Region
Kumamoto Prefecture
Sea Region
Located at the south end of the detached outer breakwater of the main western harbor of Ushibuka.
Latitude
32.1833°
Longitude
130.0059°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Ushibuka West Outer Breakwater Lighthouse at night?+
Ushibuka West Outer Breakwater displays the characteristic Fl (2) Green 6s — 2 green flashes every 6 seconds. 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Ushibuka West Outer Breakwater Lighthouse guide vessels into?+
Ushibuka West Outer Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Ushibuka at 0.9 NM to the NE. Other ports served include Oniki (3.3 NM N), Sasue (5.7 NM ESE), Fukami (6.3 NM NE), Sakitsu (7.8 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ushibuka West Outer Breakwater Lighthouse still active and maintained?+
Yes, Ushibuka West Outer 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 Ushibuka West Outer Breakwater Lighthouse?+
Ushibuka West Outer 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 Ushibuka West Outer Breakwater Lighthouse?+
You can track vessels near Ushibuka West Outer 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.