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Katsuo Shima Lighthouse

Fl (2) W 7s🇯🇵Wakayama Prefecture, JPOperational

Location & Light Range

About Katsuo Shima Lighthouse

This modern lighthouse, built and first lit in 2022, stands on a skerry approximately 5 kilometers south of the Ugui lighthouse. The structure is a 15-meter round white tower featuring a double gallery. Its focal plane is 20 meters above sea level. The light emits a white occulting characteristic, showing white, red, and green on a 4-second cycle.

Light & Optic

Characteristic Signature
Fl (2) W 7s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
7s
Raw Code
Oc.W.R.G. period 4s
Focal Height
20m

Construction & History

Year Built
2022

References & Identifiers

Admiralty No.
M6003
NGA No.
6708
ARLHS No.
JPN-1952

Tower & Structure

Tower Shape
round

Location

City
Wakayama Prefecture
Country
🇯🇵JP
Latitude
33.6062°
Longitude
135.9616°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Katsuo Shima Lighthouse at night?+
Katsuo Shima displays the characteristic Fl (2) W 7s — 2 white flashes every 7 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 Katsuo Shima Lighthouse guide vessels into?+
Katsuo Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is Katsuura, Wakayama at 1.4 NM to the NNW. Other ports served include Shingu (4.1 NM NNE), Sue (11.2 NM SW), KUSHIMOTO (11.9 NM SW), Fukuro (12.2 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Katsuo Shima Lighthouse still active and maintained?+
Yes, Katsuo 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 Katsuo Shima Lighthouse?+
Katsuo 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 Katsuo Shima Lighthouse?+
You can track vessels near Katsuo 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.