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Katakirazowai Lighthouse

Fl (2) White 5s🇯🇵Onomichi, JPOperational

Location & Light Range

About Katakirazowai Lighthouse

Also known as: Katakirazowai (Katakira Zowai)

This cylindrical concrete tower stands 8 meters tall on a concrete pier, marking a reef off the east coast of Momojima island. Its structure is painted black with a single red horizontal band, and the light reaches a focal height of 9.5 meters. The operational light emits two white flashes every 5 seconds, with a geographic range of 10.2 nautical miles. The lighthouse site is accessible to visitors, though the tower itself is closed to the public. It is located near Onomichi city in Hiroshima Prefecture and is reachable by boat from the nearest port, Tsuneishi, 1.1 kilometers away.

Why it matters: The lighthouse is essential for maritime safety by marking the hazardous reef off Momojima's east coast, guiding vessels and ensuring safe passage through these island-dotted waters.

Light & Optic

Characteristic Signature
Fl (2) White 5s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
5s
Raw Code
Fl W 5s
Focal Height
9.5m
Geographic Range
10.2NM

Location

City
Onomichi
Country
🇯🇵Japan
Region
Hiroshima Prefecture
Sea Region
A reef off the east coast of Momojima, an island to the west of Tajima.
Latitude
34.3717°
Longitude
133.2844°

References & Identifiers

Nearest Port
Tsuneishi(1.1 km)
Admiralty No.
M5725
NGA No.
8444
ARLHS No.
JPN-491

Tower & Structure

Tower Height
8m
Tower Shape
cylindrical
Tower Color
black with a red horizontal band
Material
concrete

Structure: round cylindrical concrete tower, mounted on a 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 Katakirazowai Lighthouse at night?+
Katakirazowai displays the characteristic Fl (2) White 5s — 2 white flashes 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. The white color may indicate a specific sector or warning zone.
Which ports and harbors does Katakirazowai Lighthouse guide vessels into?+
Katakirazowai Lighthouse assists vessels approaching 5 nearby ports. The closest is Yokota, Hiroshima at 1.1 NM to the SSE. Other ports served include Tsuneishi (1.2 NM NNE), OnomichiItozaki (5.7 NM WNW), Itozaki (5.9 NM W), Nomi (5.9 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Katakirazowai Lighthouse still active and maintained?+
Yes, Katakirazowai 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 Katakirazowai Lighthouse?+
Katakirazowai 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 Katakirazowai Lighthouse?+
You can track vessels near Katakirazowai 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.