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Ohuyu Lighthouse

Fl G 4s🇯🇵Western Hokkaidō, JPOperational

Location & Light Range

About Ohuyu Lighthouse

The Ohuyu Lighthouse is situated in Western Hokkaidō. It emits a green light from a focal height of 11 meters above sea level. The lighthouse is operational, providing a navigational signal.

Light & Optic

Characteristic Signature
Fl G 4s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
4s
Focal Height
11m

Nearby Vessels

Flag
Type
Name
Dist.

Location

City
Western Hokkaidō
Country
🇯🇵JP
Latitude
43.7448°
Longitude
141.3416°
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Frequently Asked Questions

How do mariners identify Ohuyu Lighthouse at night?+
Ohuyu displays the characteristic Fl G 4s — 1 green flash every 4 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. The green color may indicate a specific sector or warning zone.
Which ports and harbors does Ohuyu Lighthouse guide vessels into?+
Ohuyu Lighthouse assists vessels approaching 5 nearby ports. The closest is Mashike at 10.4 NM to the NE. Other ports served include Rumoi (17.9 NM NE), Wakkanai (24.7 NM SE), Ishikariwan Shinko (24.7 NM SSE), Wan (30.7 NM S). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ohuyu Lighthouse still active and maintained?+
Yes, Ohuyu 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 Ohuyu Lighthouse?+
You can track vessels near Ohuyu 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.