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Teuchi Kō Lighthouse

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

Location & Light Range

About Teuchi Kō Lighthouse

This white, cylindrical concrete tower stands 11 meters high on a short breakwater at the southeastern tip of Shimo-Koshikijima. Its focal plane reaches 17 meters above sea level, emitting a green flash every 6 seconds. The structure features a flared top and is attached to a small equipment shelter. Located at the entrance to Teuchi harbor, it guides vessels into Satsumasendai's waters. The site is open to visitors, although the tower itself is closed to the public.

Why it matters: The lighthouse is essential for fishing boats and other small vessels entering Teuchi harbor, preventing groundings and collisions at the narrow entrance.

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
17m
Geographic Range
12.4NM

Location

City
Satsumasendai
Country
🇯🇵Japan
Region
Kagoshima Prefecture
Sea Region
Located on a short breakwater on the south side of the entrance to Teuchi harbor, at the southeastern tip of Shimo-Koshikijima.
Latitude
31.6320°
Longitude
129.7149°

References & Identifiers

Nearest Port
Eishi(13.7 km)
ARLHS No.
JPN-2080

Tower & Structure

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

Structure: round cylindrical concrete tower with a flared top, attached to a small equipment shelter

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Teuchi Kō Lighthouse at night?+
Teuchi Kō 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 Teuchi Kō Lighthouse guide vessels into?+
Teuchi Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Teuchi at 0.4 NM to the WNW. Other ports served include Nakakoshiki (14.3 NM NNE), Nomaike (25 NM ESE), Hashima (26.2 NM ENE), Higashisonogi-Gun Cho (26.2 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Teuchi Kō Lighthouse still active and maintained?+
Yes, Teuchi 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 Teuchi Kō Lighthouse?+
Teuchi 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 Teuchi Kō Lighthouse?+
You can track vessels near Teuchi 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.