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Nezumi Se Lighthouse

Fl (6) White 15s🇯🇵Saikai, JPOperational

Location & Light Range

About Nezumi Se Lighthouse

The Nezumi Se lighthouse is situated on a rock located 1.2 kilometers west of the Saikai shoreline in Nagasaki Prefecture. The structure is a cylindrical concrete tower measuring 11 meters in height. Its exterior is divided into two colors: yellow for the upper half and black for the lower half. A prominent round equipment enclosure is mounted on top of the tower. The light emits a white flash at 15-second intervals and has a geographic range of 11.9 nautical miles. Access to the site is permitted, but the tower itself is not open for entry.

Why it matters: Nezumi Se marks the western approach to Saikai, assisting vessels navigating the channel between Seto and Matsushima.

Light & Optic

Characteristic Signature
Fl (6) White 15s
Flash Type
Flashing
Light Color
White
Flash Count
6 flashes
Interval
15s
Raw Code
Fl W 15s
Focal Height
15m
Geographic Range
11.9NM

Location

City
Saikai
Country
🇯🇵Japan
Region
Nagasaki Prefecture
Sea Region
Located on a rock about 1.2 km west of the Saikai waterfront, visible from ferries between Seto and Matsushima.
Latitude
32.9426°
Longitude
129.6277°

References & Identifiers

Nearest Port
Seto(0.5 km)
Admiralty No.
M5209
NGA No.
11844

Tower & Structure

Tower Height
11m
Tower Shape
cylindrical
Tower Color
Upper half yellow, lower half black
Material
concrete

Structure: round concrete tower with a large round equipment section

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 Nezumi Se Lighthouse at night?+
Nezumi Se displays the characteristic Fl (6) White 15s — 6 white flashes every 15 seconds. 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 Nezumi Se Lighthouse guide vessels into?+
Nezumi Se Lighthouse assists vessels approaching 5 nearby ports. The closest is Seto at 0.6 NM to the SSE. Other ports served include Matsushima, Nagasaki (1.3 NM W), Saikai (1.3 NM ESE), Matsuura, Nagasaki (1.5 NM WSW), Nanatsugama (1.5 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Nezumi Se Lighthouse still active and maintained?+
Yes, Nezumi Se 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 Nezumi Se Lighthouse?+
Nezumi Se 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 Nezumi Se Lighthouse?+
You can track vessels near Nezumi Se 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.