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Oshidomari Lighthouse

Fl W 15s🇯🇵Rishiri and Rebun, Hokkaido, JPOperational

Location & Light Range

About Oshidomari Lighthouse

Also known as: Oshidomari Lighthouse

Oshidomari Lighthouse in Hokkaido displays a white light with a single flash every 15 seconds. Its tower measures 9 meters in height, and the light source is positioned 76 meters above sea level. The geographic range of this aid to navigation extends to 21 nautical miles.

Light & Optic

Characteristic Signature
Fl W 15s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
15s
Raw Code
Fl.W. period 15s
Focal Height
76m
Geographic Range
21NM

Location

City
Rishiri and Rebun, Hokkaido
Country
🇯🇵JP
Latitude
45.2463°
Longitude
141.2312°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
9m

References & Identifiers

Admiralty No.
M6915
NGA No.
1372
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Frequently Asked Questions

How do mariners identify Oshidomari Lighthouse at night?+
Oshidomari displays the characteristic Fl W 15s — 1 white flash every 15 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 Oshidomari Lighthouse guide vessels into?+
Oshidomari Lighthouse assists vessels approaching 5 nearby ports. The closest is Oshidomari at 0.2 NM to the SSW. Other ports served include Shido (0.2 NM SSW), Kutsugata (5.3 NM SW), Oniwaki (7.4 NM SSE), Iwaki (7.6 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Oshidomari Lighthouse still active and maintained?+
Yes, Oshidomari 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.
How can I track vessels near Oshidomari Lighthouse?+
You can track vessels near Oshidomari 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.