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Tsubaki Kō Lighthouse

F Green 5s🇯🇵Oga, JPOperational

Location & Light Range

About Tsubaki Kō Lighthouse

This cylindrical concrete lighthouse, built in 2016, stands 10 meters tall with a focal height of 12 meters. Its white tower features a flared top and emits a continuous green light with a brighter flash every five seconds. Located on the extended west breakwater of Tsubaki fishing port, approximately 10 kilometers west of Uno Saki, it guides vessels into the harbor. The lighthouse was relocated to its current position as part of the port's expansion. The site is open to visitors, though the tower itself is closed.

Why it matters: Its relocation to the extended breakwater signifies the port's development and the commitment to maritime safety for local fishing fleets. The light's specific flash characteristic aids in its identification, preventing navigational errors for vessels 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

Year Built
2016

Significant events: Relocation to extended breakwater

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
10m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round concrete tower with a flared top

Location

City
Oga
Country
🇯🇵Japan
Region
Akita Prefecture
Sea Region
Located on the extended west breakwater of Tsubaki, a fishing port about 10 km west of Uno Saki.
Latitude
39.8591°
Longitude
139.7841°

References & Identifiers

Nearest Port
Akitafunagawa(3.6 km)
ARLHS No.
JPN-1047
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Frequently Asked Questions

How do mariners identify Tsubaki Kō Lighthouse at night?+
Tsubaki 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 Tsubaki Kō Lighthouse guide vessels into?+
Tsubaki Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Funagawa at 3.4 NM to the ENE. Other ports served include Akitafunagawa (3.5 NM ENE), Funakawa (3.9 NM E), Akita (13.9 NM ESE), Noshiro (23.1 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tsubaki Kō Lighthouse still active and maintained?+
Yes, Tsubaki 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 Tsubaki Kō Lighthouse?+
Tsubaki 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 Tsubaki Kō Lighthouse?+
You can track vessels near Tsubaki 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.