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Ushibuka Kuroshima Breakwater Lighthouse

Fl (2) Red 6s🇯🇵Amakusa, JPOperational

Location & Light Range

About Ushibuka Kuroshima Breakwater Lighthouse

Also known as: Ushibuka Kuroshima Breakwater (Suguchi Ura)

This red, cylindrical concrete lighthouse was built in 1983 and first lit the same year. Standing 11 meters tall with a focal height of 15 meters, it is situated at the end of the south breakwater of Ushibuka's main western harbor. The tower is round and flares at the top. It emits a single red flash every six seconds, visible for nearly 12 nautical miles. The lighthouse is located 1.5 kilometers from the nearest port of Ushibuka.

Why it matters: This lighthouse is essential for the safe entry of all maritime traffic into Ushibuka's main western harbor, clearly marking the detached south breakwater and preventing collisions with its submerged end.

Light & Optic

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

Construction & History

Year Built
1983

References & Identifiers

Nearest Port
Ushibuka(1.5 km)
Admiralty No.
M5117
NGA No.
11352
USCG No.
JCG-6478.5

Tower & Structure

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

Structure: round concrete tower, flared at the top

Location

City
Amakusa
Country
🇯🇵Japan
Region
Kumamoto Prefecture
Sea Region
Located at the end of the south breakwater of the main western harbor of Ushibuka, Japan.
Latitude
32.1854°
Longitude
130.0074°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Ushibuka Kuroshima Breakwater Lighthouse at night?+
Ushibuka Kuroshima Breakwater displays the characteristic Fl (2) Red 6s — 2 red 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 red color may indicate a specific sector or warning zone.
Which ports and harbors does Ushibuka Kuroshima Breakwater Lighthouse guide vessels into?+
Ushibuka Kuroshima Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Ushibuka at 0.7 NM to the NE. Other ports served include Oniki (3.2 NM N), Sasue (5.6 NM ESE), Fukami (6.1 NM NE), Sakitsu (7.7 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ushibuka Kuroshima Breakwater Lighthouse still active and maintained?+
Yes, Ushibuka Kuroshima 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 Kuroshima Breakwater Lighthouse?+
Ushibuka Kuroshima 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 Kuroshima Breakwater Lighthouse?+
You can track vessels near Ushibuka Kuroshima 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.