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Ōma Gyoko Kō North Breakwater Lighthouse

Fl Red 3s🇯🇵Hakodate, JPOperational

Location & Light Range

About Ōma Gyoko Kō North Breakwater Lighthouse

Also known as: Ōshima

A 11-meter tall cylindrical concrete tower, the Ōma Gyoko (Ōshima) Kō North Breakwater light stands on the northern arm of the harbor's breakwater. It emits a red flash every 3 seconds. The structure features a lantern and gallery, and its light is visible for 11.3 nautical miles. This operational light is situated 0.2 kilometers from Toyoura port. While visitors can access the site, the tower itself remains closed to the public.

Why it matters: This navigational aid is essential for the fishing fleet operating from Ōma Gyoko, guiding vessels safely into and out of the port, particularly during periods of low visibility or adverse weather. Its specific placement on the north breakwater clearly marks the safe channel into the harbor.

Light & Optic

Characteristic Signature
Fl Red 3s
Flash Type
Flashing
Light Color
Red
Interval
3s
Raw Code
Fl R 3s
Focal Height
13m
Geographic Range
11.3NM

Location

City
Hakodate
Country
🇯🇵Japan
Region
Hokkaido Prefecture
Sea Region
Located on the north breakwater of Ōma Gyoko (Ōshima) Port in Japan.
Latitude
41.7454°
Longitude
141.0752°

References & Identifiers

Nearest Port
Toyoura(0.2 km)
Admiralty No.
M6726.
NGA No.
0864
ARLHS No.
JPN-128

Tower & Structure

Tower Height
11m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round cylindrical concrete tower with lantern and gallery

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Ōma Gyoko Kō North Breakwater Lighthouse at night?+
Ōma Gyoko Kō North Breakwater displays the characteristic Fl Red 3s. 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 red color may indicate a specific sector or warning zone.
Which ports and harbors does Ōma Gyoko Kō North Breakwater Lighthouse guide vessels into?+
Ōma Gyoko Kō North Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Toyoura at 0.1 NM to the SSE. Other ports served include Odoh (6.2 NM NE), Todohokke (6.2 NM NE), Usujiri (12.8 NM NNW), Oma (15 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ōma Gyoko Kō North Breakwater Lighthouse still active and maintained?+
Yes, Ōma Gyoko Kō North Breakwater 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 Ōma Gyoko Kō North Breakwater Lighthouse?+
Ōma Gyoko Kō North Breakwater 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 Ōma Gyoko Kō North Breakwater Lighthouse?+
You can track vessels near Ōma Gyoko Kō North Breakwater 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.