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Ubemisaki Kō Lighthouse

F Green 5s🇯🇵Ube, JPOperational

Location & Light Range

About Ubemisaki Kō Lighthouse

Also known as: #Ubemisaki Kō

Ubemisaki Kō is a post light with a focal plane of 12 meters. It is located on the eastern end of a detached breakwater safeguarding the approach to Ube's fishing harbor, west of the airport. The light displays a green flash every 5 seconds, with a range of 11 nautical miles. This post light succeeded a former, shorter concrete structure. The site is open for visits, but the tower remains inaccessible.

Why it matters: This navigation aid marks the breakwater entrance to Ube's fishing harbor, assisting local fishing vessels and ensuring safe navigation for ships entering the port.

Light & Optic

Characteristic Signature
F Green 5s
Flash Type
Fixed
Light Color
Green
Interval
5s
Raw Code
F.Fl G 5s
Focal Height
12m
Geographic Range
11NM

Construction & History

Significant events: Replaced

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Structure: A post light with a focal plane of 12 meters.

Location

City
Ube
Country
🇯🇵Japan
Region
Yamaguchi Prefecture
Sea Region
on the east end of a detached breakwater protecting the entrance to Ube's fishing harbor, just west of the airport.
Latitude
33.9233°
Longitude
131.2618°

References & Identifiers

Nearest Port
Ube(2.6 km)
ARLHS No.
JPN-1672
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Frequently Asked Questions

How do mariners identify Ubemisaki Kō Lighthouse at night?+
Ubemisaki Kō displays the characteristic F Green 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Ubemisaki Kō Lighthouse guide vessels into?+
Ubemisaki Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Ube at 1.3 NM to the NW. Other ports served include Maruo (5.3 NM ENE), Onoda (5.5 NM WNW), Asa (7.7 NM NW), Aio (9.4 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ubemisaki Kō Lighthouse still active and maintained?+
Yes, Ubemisaki Kō 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 Ubemisaki Kō Lighthouse?+
Ubemisaki Kō 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 Ubemisaki Kō Lighthouse?+
You can track vessels near Ubemisaki Kō 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.