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Hyaken Lighthouse

Fl Green 8s🇯🇵Kasaoka, JPOperational

Location & Light Range

About Hyaken Lighthouse

Also known as: Hyaken (Hyakken)

This concrete lighthouse, standing 10 meters tall, features a green cylindrical tower with a gallery mounted on a round concrete pier. Its light emits a green flash every 8 seconds, visible for 11.3 nautical miles. Situated about 400 meters northwest of the Shiraishi light, it guides vessels through a challenging and narrow passage in Japan's Inland Sea. The tower's focal plane is 13 meters above sea level. It is located near Kasaoka in the Okayama Prefecture.

Why it matters: The Hyaken light is indispensable for maritime safety in a specific, challenging section of the Inland Sea, where its guidance prevents groundings and collisions in a narrow passage.

Light & Optic

Characteristic Signature
Fl Green 8s
Flash Type
Flashing
Light Color
Green
Interval
8s
Raw Code
Fl G 8s
Focal Height
13m
Geographic Range
11.3NM

Location

City
Kasaoka
Country
🇯🇵Japan
Region
Okayama Prefecture
Sea Region
A light in a particularly difficult and narrow passage in the Inland Sea, located about 400 m northwest of the Shiraishi light.
Latitude
34.4216°
Longitude
133.4957°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

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

Structure: round concrete tower with gallery, mounted on a round concrete pier

References & Identifiers

Nearest Port
Fukuyama, Hiroshima(2.6 km)
Admiralty No.
M5731.9
NGA No.
8304
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Frequently Asked Questions

How do mariners identify Hyaken Lighthouse at night?+
Hyaken displays the characteristic Fl Green 8s. 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 Hyaken Lighthouse guide vessels into?+
Hyaken Lighthouse assists vessels approaching 5 nearby ports. The closest is Fukuyama, Kagoshima at 3.2 NM to the WNW. Other ports served include Kuyama (3.2 NM WNW), Fukuyama, Hiroshima (3.7 NM WNW), Kasaoka (4.6 NM N), Asakuchi (7.2 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Hyaken Lighthouse still active and maintained?+
Yes, Hyaken 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 Hyaken Lighthouse?+
Hyaken 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 Hyaken Lighthouse?+
You can track vessels near Hyaken 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.