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Ohata Kō East Breakwater Lighthouse

Iso Green 6s🇯🇵Mutsu, JPOperational

Location & Light Range

About Ohata Kō East Breakwater Lighthouse

Established in 1979, this navigational aid marks the eastern breakwater of Ohata's west harbor. The structure consists of a 9-meter concrete post connected to a square, single-story concrete equipment shelter, all painted white. Its focal plane is 11 meters above sea level, and it exhibits an isophase green light with a 6-second period (Iso G 6s). This light provides a geographic range of 10.7 nautical miles. Situated approximately 12 kilometers north of Mutsu in Aomori Prefecture, it serves the port of Ohata, located 0.6 kilometers distant.

Why it matters: This light offers navigation to local fishing boats and other vessels approaching Ohata harbor, indicating the breakwater's boundary.

Light & Optic

Characteristic Signature
Iso Green 6s
Flash Type
Isophase
Light Color
Green
Interval
6s
Raw Code
Iso G 6s
Focal Height
11m
Geographic Range
10.7NM

Construction & History

Year Built
1979

References & Identifiers

Nearest Port
Ohata(0.6 km)
Admiralty No.
M6632
ARLHS No.
JPN-1079

Tower & Structure

Tower Height
9m
Tower Shape
square
Tower Color
white
Material
concrete

Structure: A 9m concrete post attached to a square 1-story concrete equipment shelter, painted white.

Location

City
Mutsu
Country
🇯🇵Japan
Region
Aomori Prefecture
Sea Region
on the east breakwater of the original harbor (now the west harbor) at Ohata, about 12 km (7.5 mi) north of Mutsu.
Latitude
41.4124°
Longitude
141.1688°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Ohata Kō East Breakwater Lighthouse at night?+
Ohata Kō East Breakwater displays the characteristic Iso Green 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Ohata Kō East Breakwater Lighthouse guide vessels into?+
Ohata Kō East Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Ohata at 0.3 NM to the SSE. Other ports served include Ominato (8.9 NM S), Shiriyazaki (11.9 NM E), Oma (13.6 NM WNW), Sai, Aomori (14 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ohata Kō East Breakwater Lighthouse still active and maintained?+
Yes, Ohata Kō East 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 Ohata Kō East Breakwater Lighthouse?+
Ohata Kō East 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 Ohata Kō East Breakwater Lighthouse?+
You can track vessels near Ohata Kō East 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.