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Naku Lighthouse

Fl W 5s🇯🇵Shimane, JPOperational

Location & Light Range

About Naku Lighthouse

The Naku Lighthouse stands 16 meters tall with a quadrilateral latticed tower structure. It is painted white and red and includes a rectangular daymark for visual identification. This fiberglass tower emits a white light, characterized by a single white flash repeating every 5 seconds. The light's focal plane is 46 meters above sea level, offering a geographic range of 7 nautical miles. This structure was operational as of the recorded data.

Light & Optic

Characteristic Signature
Fl W 5s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
5s
Raw Code
Fl.W. period 5s
Focal Height
46m
Geographic Range
7NM

Location

City
Shimane
Country
🇯🇵JP
Latitude
36.2124°
Longitude
133.1840°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
16m
Tower Shape
quadrilateral
Tower Color
white and red
Material
fiberglass

Structure: Quadrilateral latticed tower, red and white rectangular daymark; 16

References & Identifiers

Admiralty No.
M7321.4
NGA No.
2084
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Frequently Asked Questions

How do mariners identify Naku Lighthouse at night?+
Naku displays the characteristic Fl W 5s — 1 white flash every 5 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.
Which ports and harbors does Naku Lighthouse guide vessels into?+
Naku Lighthouse assists vessels approaching 5 nearby ports. The closest is Oki at 7.4 NM to the E. Other ports served include Ama, Hyogo (8 NM SW), Nakanoshima (8.3 NM SW), Chichii (8.8 NM SSW), Beppu, Shimane (9.2 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Naku Lighthouse still active and maintained?+
Yes, Naku 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 Naku Lighthouse?+
Naku 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 Naku Lighthouse?+
You can track vessels near Naku 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.