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Susa Kō Lighthouse

Fl White 3s🇯🇵Hagi, JPOperational

Location & Light Range

About Susa Kō Lighthouse

Also known as: Susa Kō (Tenjin Shima)

A white, cylindrical concrete tower, 11 meters in height, marks the entrance to Susa Bay. It features a large concrete lantern and gallery. The light itself is white, with a single flash every 3 seconds, visible for 19 nautical miles. The lighthouse stands on an island approximately 0.9 kilometers from the port of Susa. It operates from a focal height of 52 meters above sea level. The structure is a round, concrete tower.

Why it matters: This lighthouse guides maritime traffic into and out of Susa Bay, preventing groundings on the island at its mouth. Its consistent light supports local fishing and commercial activities by ensuring safe navigation of the entrance channel.

Light & Optic

Characteristic Signature
Fl White 3s
Flash Type
Flashing
Light Color
White
Interval
3s
Raw Code
Fl W 3s
Focal Height
52m
Geographic Range
19NM

Location

City
Hagi
Country
🇯🇵Japan
Region
Yamaguchi Prefecture
Sea Region
Susa Bay entrance, on an island
Latitude
34.6308°
Longitude
131.5819°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

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

Structure: round cylindrical concrete tower with a large concrete lantern and gallery

References & Identifiers

Nearest Port
Susa(0.9 km)
Admiralty No.
M7360
NGA No.
1780
ARLHS No.
JPN-277
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Frequently Asked Questions

How do mariners identify Susa Kō Lighthouse at night?+
Susa Kō displays the characteristic Fl White 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Susa Kō Lighthouse guide vessels into?+
Susa Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Susa at 0.8 NM to the SE. Other ports served include Esaki (3.2 NM ENE), Masuda, Shimane (12.4 NM ENE), Hagi (14.4 NM SW), Misumi, Shimane (19.5 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Susa Kō Lighthouse still active and maintained?+
Yes, Susa 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 Susa Kō Lighthouse?+
Susa 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 Susa Kō Lighthouse?+
You can track vessels near Susa 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.