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Okadohana Lighthouse

Fl W 3s🇯🇵Seto Naikai Eastern, JPOperational

Location & Light Range

About Okadohana Lighthouse

This square lighthouse stands 13 meters high, painted white with distinctive red vertical stripes. Its focal height reaches 64 meters above sea level. The light produces a single white flash every 3 seconds. The structure is located in the Seto Naikai Eastern region.

Why it matters: The lighthouse provides a geographic range of 21 nautical miles.

Light & Optic

Characteristic Signature
Fl W 3s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
3s
Raw Code
Fl.W. period 3s
Focal Height
64m
Light Range
21NM (38.9 km)
Geographic Range
21NM

Location

City
Seto Naikai Eastern
Country
🇯🇵JP
Latitude
34.4333°
Longitude
134.3375°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
13m
Tower Shape
square
Tower Color
white and red

Structure: White square tower, red vertical stripes; 37

References & Identifiers

Admiralty No.
M5548
NGA No.
7896
OpenStreetMap
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Frequently Asked Questions

How far offshore can Okadohana Lighthouse be seen?+
With a focal height of 64 meters and a nominal range of 21 nautical miles (approximately 38.9 km), Okadohana is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. Lights of this range are typically used as landfall lights by vessels approaching from the open sea.
How do mariners identify Okadohana Lighthouse at night?+
Okadohana displays the characteristic Fl W 3s — 1 white flash every 3 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 Okadohana Lighthouse guide vessels into?+
Okadohana Lighthouse assists vessels approaching 5 nearby ports. The closest is Sakate at 1.4 NM to the NW. Other ports served include Uchinomi (3.2 NM NW), Ikeda, Kagawa (6 NM WNW), Tonosho (8.4 NM WNW), Tsuda (9.3 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Okadohana Lighthouse still active and maintained?+
Yes, Okadohana 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 Okadohana Lighthouse?+
Okadohana 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 Okadohana Lighthouse?+
You can track vessels near Okadohana 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.