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Rikuzen O Shima Lighthouse

Fl W 10s🇯🇵Northeastern Honshū, JPOperational

Location & Light Range

About Rikuzen O Shima Lighthouse

This metal lighthouse features a white, conical tower that stands 13 meters high. Its light source is positioned 37 meters above sea level. The structure emits a single white flash every 10 seconds. Its geographic range is limited to 5 nautical miles.

Light & Optic

Characteristic Signature
Fl W 10s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
10s
Raw Code
Fl.W. period 10s
Focal Height
37m
Geographic Range
5NM

Location

City
Northeastern Honshū
Country
🇯🇵JP
Latitude
38.8304°
Longitude
141.6244°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
13m
Tower Shape
conical
Tower Color
white
Material
metal

Structure: Metal column; 13

References & Identifiers

Admiralty No.
M6566
NGA No.
4268
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Frequently Asked Questions

How do mariners identify Rikuzen O Shima Lighthouse at night?+
Rikuzen O Shima displays the characteristic Fl W 10s — 1 white flash every 10 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 Rikuzen O Shima Lighthouse guide vessels into?+
Rikuzen O Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is En at 2.5 NM to the NNW. Other ports served include Nakayama (2.5 NM NNW), Obatake (2.5 NM NNW), Saba (2.5 NM NNW), Kesennuma (4.4 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Rikuzen O Shima Lighthouse still active and maintained?+
Yes, Rikuzen O Shima 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 Rikuzen O Shima Lighthouse?+
Rikuzen O Shima 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 Rikuzen O Shima Lighthouse?+
You can track vessels near Rikuzen O Shima 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.