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Shiogo Lighthouse

Fl White 3s🇯🇵Ainan, JPOperational

Location & Light Range

About Shiogo Lighthouse

Also known as: Shiogo (Sioko) Shima (Kuro Bae)

This white, cylindrical concrete tower stands 17 meters tall and has a focal height of 19 meters. It emits a single white flash every three seconds. The lighthouse is located in Ainan, within Ehime Prefecture, Japan. While the tower itself is closed to visitors, the surrounding site is open for public access. The nearest port, Yutai, is 1.4 kilometers away.

Why it matters: The Shiogo Lighthouse provides navigational guidance for maritime traffic, contributing to the safety of vessels in Japan's coastal waters.

Light & Optic

Characteristic Signature
Fl White 3s
Flash Type
Flashing
Light Color
White
Interval
3s
Raw Code
Fl W 3s
Focal Height
19m
Geographic Range
12.9NM

Location

City
Ainan
Country
🇯🇵Japan
Region
Ehime Prefecture
Latitude
33.0209°
Longitude
132.4590°

References & Identifiers

Nearest Port
Yutai(1.4 km)
Admiralty No.
M5612.3
NGA No.
10476
ARLHS No.
JPN-2513

Tower & Structure

Tower Height
17m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round cylindrical white concrete tower

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Shiogo Lighthouse at night?+
Shiogo 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 Shiogo Lighthouse guide vessels into?+
Shiogo Lighthouse assists vessels approaching 5 nearby ports. The closest is Misho at 5.2 NM to the SE. Other ports served include Iwamatsu (6.8 NM NNE), Fukaura, Ehime (8.4 NM ESE), Hyakunoura (12.5 NM NNE), Aji (12.9 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Shiogo Lighthouse still active and maintained?+
Yes, Shiogo 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 Shiogo Lighthouse?+
Shiogo 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 Shiogo Lighthouse?+
You can track vessels near Shiogo 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.