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Mio Oshima Lighthouse

Fl White 4s🇯🇵Shin-onsen, JPOperational

Location & Light Range

About Mio Oshima Lighthouse

The Mio Oshima lighthouse is located on a small island northwest of Hamasaka village. It is a white, round, cylindrical concrete tower measuring 8.5 meters tall. A gallery joins the tower to a connected one-story equipment building. The lighthouse produces a white flash every four seconds, with its light reaching 21.5 nautical miles. Access to the island is via boat.

Why it matters: This lighthouse marks the waters near Mio and the approach to Hamasaka port, aiding vessels in safe passage around the island.

Light & Optic

Characteristic Signature
Fl White 4s
Flash Type
Flashing
Light Color
White
Interval
4s
Raw Code
Fl W 4s
Focal Height
71m
Geographic Range
21.5NM

Location

City
Shin-onsen
Country
🇯🇵Japan
Region
Hyogo Prefecture
Sea Region
Located on a small island off Mio, a tiny village about 15 km northwest of Hamasaka, Japan.
Latitude
35.6622°
Longitude
134.5027°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
8.5m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round cylindrical concrete tower with gallery adjoining a 1-story equipment building

References & Identifiers

Nearest Port
Hamasaka(3.3 km)
ARLHS No.
JPN-357
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Frequently Asked Questions

How do mariners identify Mio Oshima Lighthouse at night?+
Mio Oshima displays the characteristic Fl White 4s. 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 Mio Oshima Lighthouse guide vessels into?+
Mio Oshima Lighthouse assists vessels approaching 5 nearby ports. The closest is Hamasaka at 3.3 NM to the SW. Other ports served include Shibayama (7.9 NM E), Tajiri, Tottori (9.9 NM WSW), Yasugi (9.9 NM E), Tsui (16.3 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Mio Oshima Lighthouse still active and maintained?+
Yes, Mio Oshima 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 Mio Oshima Lighthouse?+
Mio Oshima 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 Mio Oshima Lighthouse?+
You can track vessels near Mio Oshima 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.