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Shimo-Ninai Shima Lighthouse

Fl White 14s🇯🇵Suo-Oshima, JPOperational

Location & Light Range

About Shimo-Ninai Shima Lighthouse

Also known as: Simo-Ninai

Built in 1937, the Shimo-Ninai Shima Lighthouse is a 12-meter cylindrical concrete tower. It rises from the front of a semicircular, single-story concrete keeper's house. The light emits a white flash every 14 seconds. Its focal height of 118 meters provides a geographic range of 26.7 nautical miles. This active light is situated on Shimo-Ninai Island in Japan's Yamaguchi Prefecture.

Why it matters: This lighthouse aids navigation around Shimo-Ninai Island, benefiting local fishing fleets and coastal traffic. Its elevated focal plane ensures visibility for vessels navigating these waters.

Light & Optic

Characteristic Signature
Fl White 14s
Flash Type
Flashing
Light Color
White
Interval
14s
Raw Code
Fl W 14s
Focal Height
118m
Geographic Range
26.7NM

Construction & History

Year Built
1937

References & Identifiers

Nearest Port
Murotsu, Yamaguchi(3.4 km)
Admiralty No.
M5628
NGA No.
9216
ARLHS No.
JPN-1657

Tower & Structure

Tower Height
12m
Tower Shape
cylindrical
Material
concrete

Structure: round cylindrical concrete tower with lantern and gallery, rising from the front of a semicircular 1-story concrete keeper's house

Location

City
Suo-Oshima
Country
🇯🇵Japan
Region
Yamaguchi Prefecture
Sea Region
Shimo-Ninai Island, Japan
Latitude
33.8478°
Longitude
132.1825°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Shimo-Ninai Shima Lighthouse at night?+
Shimo-Ninai Shima displays the characteristic Fl White 14s. 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 Shimo-Ninai Shima Lighthouse guide vessels into?+
Shimo-Ninai Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is Hirao at 6.6 NM to the NNW. Other ports served include Yanai (6.7 NM NNW), Kuka (7.4 NM NNE), Tsuzu Yamaguchi (12.2 NM N), Ihota (14 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Shimo-Ninai Shima Lighthouse still active and maintained?+
Yes, Shimo-Ninai Shima 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 Shimo-Ninai Shima Lighthouse?+
Shimo-Ninai Shima 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 Shimo-Ninai Shima Lighthouse?+
You can track vessels near Shimo-Ninai Shima 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.