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Tsukumi Kō Detached Breakwater Lighthouse

Fl Green 3s🇯🇵Tsukumi, JPOperational

Location & Light Range

About Tsukumi Kō Detached Breakwater Lighthouse

This concrete lighthouse, standing 9 meters tall, is located on a detached breakwater within Tsukumi harbor. A 1-story concrete equipment room supports the white cylindrical post. Its light emits a green flash every 3 seconds and has a geographic range of 11 nautical miles. It is situated 0.4 kilometers from the nearest port, Tsukumi. The structure's focal height reaches 12 meters above sea level.

Why it matters: The lighthouse warns vessels of the submerged breakwater, ensuring safe entry and exit for ships using Tsukumi harbor.

Light & Optic

Characteristic Signature
Fl Green 3s
Flash Type
Flashing
Light Color
Green
Interval
3s
Raw Code
Fl G 3s
Focal Height
12m
Geographic Range
11NM

Location

City
Tsukumi
Country
🇯🇵Japan
Region
Oita Prefecture
Sea Region
Tsukumi harbor, marking a breakwater.
Latitude
33.0791°
Longitude
131.8638°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
9m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: A 9m concrete post attached to a square 1-story concrete equipment room, painted white.

References & Identifiers

Nearest Port
Tsukumi(0.4 km)
ARLHS No.
JPN-2340
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Frequently Asked Questions

How do mariners identify Tsukumi Kō Detached Breakwater Lighthouse at night?+
Tsukumi Kō Detached Breakwater displays the characteristic Fl Green 3s. 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 Tsukumi Kō Detached Breakwater Lighthouse guide vessels into?+
Tsukumi Kō Detached Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Tsukumi at 0.4 NM to the ENE. Other ports served include Usuki (4 NM NW), Saiki (6.6 NM SSE), Urashiro (7.6 NM SSE), Saganoseki (10 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tsukumi Kō Detached Breakwater Lighthouse still active and maintained?+
Yes, Tsukumi Kō Detached 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 Tsukumi Kō Detached Breakwater Lighthouse?+
Tsukumi Kō Detached 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 Tsukumi Kō Detached Breakwater Lighthouse?+
You can track vessels near Tsukumi Kō Detached 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.