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Yadama Kō Lighthouse

Fl Green 6s🇯🇵Shimonoseki, JPOperational

Also known as: Yatama

Established in 1963, the Yadama Kō Lighthouse is situated near Yadama Port in Japan's Yamaguchi Prefecture. Its green light emits a single flash every six seconds from a focal height of 13 meters, with a geographic range of 11.3 nautical miles. This modern structure assists mariners in navigating the waters leading to Shimonoseki. The lighthouse site is accessible, though the tower itself is closed to the public. It continues to serve local fishing boats and other marine traffic.

Why it matters: The green flashing light of the Yadama Kō Lighthouse clearly marks the entrance to Yadama Port, contributing to the safety of fishing fleets and commercial vessels.

Characteristic Signature
Fl Green 6s
Flash Type
Flashing
Light Color
Green
Interval
6s
Raw Code
Fl G 6s
Focal Height
13m
Geographic Range
11.3NM
Year Built
1963
Open to public
Site open, tower closed
Flag
Type
Name
Dist.

Structure: Yadama Kō Lighthouse, established in 1963, guides vessels navigating the waters near Yadama Port in Japan. Its green light, flashing every six seconds from a focal plane of 13 meters, helps mariners safely approach the harbor, particularly during night or inclement weather. As a relatively modern aid to navigation, it reflects the ongoing need for reliable maritime markers even in an era of advanced technology. The lighthouse remains active, diligently serving the local fishing boats and other marine traffic that frequent this coastal area. While the tower itself is not open to the public, visitors can still access the site to observe the lighthouse from its base, offering a glimpse into the operational life of a Japanese port. Its presence underscores the continuous rhythm of maritime activity along this stretch of the Japanese coast.

City
Shimonoseki
Country
🇯🇵Japan
Region
Yamaguchi Prefecture
Sea Region
Yadama Port, Japan
Latitude
34.2726°
Longitude
130.8898°
Nearest Port
Tsunoshima(4.8 km)
Admiralty No.
M7400
ARLHS No.
JPN-1679
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How do mariners identify Yadama Kō Lighthouse at night?+
Yadama Kō displays the characteristic Fl Green 6s. 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 Yadama Kō Lighthouse guide vessels into?+
Yadama Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Kottoi at 2.7 NM to the N. Other ports served include Tsunoshima (4.8 NM NNW), Kogushi, Yamaguchi (6 NM SSE), Awano (6.4 NM NE), Murotsu, Yamaguchi (8.1 NM S). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yadama Kō Lighthouse still active and maintained?+
Yes, Yadama 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 Yadama Kō Lighthouse?+
Yadama 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 Yadama Kō Lighthouse?+
You can track vessels near Yadama 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.