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Onomichi Lighthouse

Fl W 4s🇯🇵Okayama and Hiroshima, JPOperational

Location & Light Range

About Onomichi Lighthouse

The Onomichi Lighthouse is a white, round concrete tower measuring 36 meters in height. Its light is situated 33 meters above sea level. The tower emits a single white flash every 4 seconds. Its geographic range extends to 5 nautical miles.

Light & Optic

Characteristic Signature
Fl W 4s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
4s
Raw Code
Fl.W. period 4s
Focal Height
33m
Geographic Range
5NM

Location

City
Okayama and Hiroshima
Country
🇯🇵JP
Latitude
34.4016°
Longitude
133.1962°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
36m
Tower Shape
round
Tower Color
white
Material
concrete

Structure: White round concrete tower; 36

References & Identifiers

Admiralty No.
M5722
NGA No.
8452
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Frequently Asked Questions

How do mariners identify Onomichi Lighthouse at night?+
Onomichi displays the characteristic Fl W 4s — 1 white flash every 4 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 Onomichi Lighthouse guide vessels into?+
Onomichi Lighthouse assists vessels approaching 5 nearby ports. The closest is OnomichiItozaki at 0.9 NM to the WNW. Other ports served include Itozaki (1.8 NM SW), Nomi (1.8 NM SW), Omi (1.8 NM SW), Onomichi (1.8 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Onomichi Lighthouse still active and maintained?+
Yes, Onomichi 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 Onomichi Lighthouse?+
Onomichi 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 Onomichi Lighthouse?+
You can track vessels near Onomichi 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.