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Ōma Kō West Breakwater Lighthouse

Oc Red 6s🇯🇵Oma, JPOperational

Location & Light Range

About Ōma Kō West Breakwater Lighthouse

Built in 1961, the Ōma Kō West Breakwater light is a red concrete cylindrical post measuring 9.5 meters in height, affixed to a 1-story concrete equipment building. Its light source is positioned 13 meters above sea level. The light displays an occulting red characteristic (Oc R 6s) and can be seen up to 11.3 nautical miles. Located on the western breakwater of the Ōma fishing harbor, it is distinct from the modern ferry terminal. Access to the site is permitted, but the tower is not open for tours.

Why it matters: This light serves as a navigation aid, marking the harbor entrance for ships approaching and departing the traditional Ōma port and indicating the safe passage channel.

Light & Optic

Characteristic Signature
Oc Red 6s
Flash Type
Occulting
Light Color
Red
Interval
6s
Raw Code
Oc R 6s
Focal Height
13m
Geographic Range
11.3NM

Construction & History

Year Built
1961

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
9.5m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: A 9.5m red concrete post attached to a square 1-story concrete equipment shelter.

Location

City
Oma
Country
🇯🇵Japan
Region
Aomori Prefecture
Sea Region
west breakwater of the traditional harbor of Ōma
Latitude
41.5317°
Longitude
140.9032°

References & Identifiers

Nearest Port
Oma(0.3 km)
Admiralty No.
M6636
NGA No.
3828.2
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Frequently Asked Questions

How do mariners identify Ōma Kō West Breakwater Lighthouse at night?+
Ōma Kō West Breakwater displays the characteristic Oc Red 6s. 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 Kō West Breakwater Lighthouse guide vessels into?+
Ōma Kō West Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Oma at 0.3 NM to the ESE. Other ports served include Sai, Aomori (6.2 NM SSW), Soya (8.6 NM SSW), Hotokegaura (14 NM SSW), Ohata (14.2 NM ESE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ōma Kō West Breakwater Lighthouse still active and maintained?+
Yes, Ōma Kō West 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 Kō West Breakwater Lighthouse?+
Ōma Kō West 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 Kō West Breakwater Lighthouse?+
You can track vessels near Ōma Kō West 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.