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Ondo Lighthouse

Iso W 6s🇯🇵Seto Naikai Western, JPOperational

Location & Light Range

About Ondo Lighthouse

This latticed tower stands 23 meters tall and displays a white and red rectangular daymark. Its focal height reaches 38 meters above sea level. The light characteristic consists of an isophase white light that completes a full cycle every 6 seconds. This structure serves navigational purposes in the Seto Naikai Western region.

Why it matters: The lighthouse provides a geographic range of 8 nautical miles.

Light & Optic

Characteristic Signature
Iso W 6s
Flash Type
Isophase
Light Color
White
Flash Count
1 flash
Interval
6s
Raw Code
Iso.W. period 6s
Focal Height
38m
Light Range
12NM (22.2 km)
Geographic Range
8NM

Location

City
Seto Naikai Western
Country
🇯🇵JP
Latitude
34.1992°
Longitude
132.5369°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
23m
Tower Shape
latticed
Tower Color
white and red

Structure: Latticed tower, red and white rectangular daymark; 23

References & Identifiers

Admiralty No.
M5693
NGA No.
9056
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Frequently Asked Questions

How far offshore can Ondo Lighthouse be seen?+
With a focal height of 38 meters and a nominal range of 12 nautical miles (approximately 22.2 km), Ondo is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. This range makes it a significant coastal navigation aid for vessels transiting the area.
How do mariners identify Ondo Lighthouse at night?+
Ondo displays the characteristic Iso W 6s — 1 white flash every 6 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 Ondo Lighthouse guide vessels into?+
Ondo Lighthouse assists vessels approaching 5 nearby ports. The closest is Hatami at 0.8 NM to the SSE. Other ports served include Mitsukoshima (1.4 NM SW), Kure, Kochi (2.1 NM NNE), Kure, Hiroshima (2.3 NM NE), Okunouchi (2.6 NM S). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ondo Lighthouse still active and maintained?+
Yes, Ondo 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 Ondo Lighthouse?+
Ondo 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 Ondo Lighthouse?+
You can track vessels near Ondo 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.