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Kusayama Saki Lighthouse

Oc White 6s🇯🇵Yamaguchi, JPOperational

Location & Light Range

About Kusayama Saki Lighthouse

Built in 1982, this 12-meter-high cylindrical concrete tower with a gallery is painted white. Situated on a rocky point, it overlooks Suō Bay. The light's focal plane reaches 128 meters, with a visibility range of 27.7 nautical miles. Its light pattern is an occulting white flash occurring every 6 seconds. The location is near Yamaguchi city, about 1.8 km from the port of Aio.

Why it matters: This structure marks the entrance to the port and warns ships about a nearby shoal, helping to avoid groundings.

Light & Optic

Characteristic Signature
Oc White 6s
Flash Type
Occulting
Light Color
White
Interval
6s
Raw Code
Oc W 6s
Focal Height
128m
Geographic Range
27.7NM

Construction & History

Year Built
1982

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
12m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round cylindrical concrete tower with gallery

Location

City
Yamaguchi
Country
🇯🇵Japan
Region
Yamaguchi Prefecture
Sea Region
A high promontory jutting into Suō Bay about 15 km (9 mi) south of Ogori, within a lovely and popular forest park marked by a stone column at its entrance.
Latitude
33.9847°
Longitude
131.4402°

References & Identifiers

Nearest Port
Aio(1.8 km)
Admiralty No.
M5390
NGA No.
9608
ARLHS No.
JPN-313
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Frequently Asked Questions

How do mariners identify Kusayama Saki Lighthouse at night?+
Kusayama Saki displays the characteristic Oc White 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Kusayama Saki Lighthouse guide vessels into?+
Kusayama Saki Lighthouse assists vessels approaching 5 nearby ports. The closest is Aio at 1.8 NM to the NNW. Other ports served include Hofu (3.4 NM NE), Maruo (4.5 NM WSW), Nakanoseki (5.7 NM E), Mitajiri (8.3 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kusayama Saki Lighthouse still active and maintained?+
Yes, Kusayama Saki 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 Kusayama Saki Lighthouse?+
Kusayama Saki 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 Kusayama Saki Lighthouse?+
You can track vessels near Kusayama Saki 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.