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Nasake Shima Lighthouse

Fl White 3s🇯🇵Suo-Oshima, JPOperational

Location & Light Range

About Nasake Shima Lighthouse

This lighthouse is situated on the southern tip of Nasake Shima, marking a 500-meter wide strait. It consists of a 9.5-meter round white concrete post topped with a lantern, resting on a hexagonal concrete pier. The focal height of its light is 12 meters above sea level. This structure emits a single white flash every three seconds, with a geographic range of 11 nautical miles. The site is accessible by boat, but the tower itself is closed to visitors.

Why it matters: The Nasake Shima Lighthouse is essential for safe passage through the 500-meter strait separating Nasake Shima and Yashiro Shima, a critical navigational point for local vessels.

Light & Optic

Characteristic Signature
Fl White 3s
Flash Type
Flashing
Light Color
White
Interval
3s
Raw Code
Fl W 3s
Focal Height
12m
Geographic Range
11NM

Location

City
Suo-Oshima
Country
🇯🇵Japan
Region
Yamaguchi Prefecture
Sea Region
Located on the southern tip of Nasake Shima, marking the 500 m wide strait between Nasake Shima and the northeastern tip of Yashiro Shima.
Latitude
33.9537°
Longitude
132.4738°

References & Identifiers

Nearest Port
Ihota(1.7 km)
Admiralty No.
M5646.3
NGA No.
9190

Tower & Structure

Tower Height
9.5m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: A 9.5m round white concrete post with a lantern, centered on a hexagonal concrete pier.

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 Nasake Shima Lighthouse at night?+
Nasake Shima 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 Nasake Shima Lighthouse guide vessels into?+
Nasake Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is Ihota at 1.9 NM to the W. Other ports served include Tainouchi (10.4 NM NNE), Kuka (10.6 NM W), Osako (10.7 NM NNE), Ryohshida (11.3 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Nasake Shima Lighthouse still active and maintained?+
Yes, Nasake 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 Nasake Shima Lighthouse?+
Nasake 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 Nasake Shima Lighthouse?+
You can track vessels near Nasake 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.