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Sekinehama Kō East Breakwater Lighthouse

Fl Green 4s🇯🇵Mutsu, JPOperational

Location & Light Range

About Sekinehama Kō East Breakwater Lighthouse

A 10-meter white cylindrical concrete post with a focal height of 14 meters marks the eastern breakwater of Sekinehama port. This structure is attached to a square, single-story concrete equipment shelter. The post is operational and emits a green flash every 4 seconds, visible for 11.6 nautical miles. It is located near Mutsu city in Aomori Prefecture, Japan, with the nearest port being Ohata, 3.6 kilometers away. This navigational aid guides vessels along the breakwater into the harbor.

Why it matters: This light is essential for guiding vessels safely along the east breakwater of Sekinehama, preventing groundings and collisions in the harbor approach. Its green flash provides a clear, unmistakable signal for mariners, ensuring they can navigate the port entrance with confidence.

Light & Optic

Characteristic Signature
Fl Green 4s
Flash Type
Flashing
Light Color
Green
Interval
4s
Raw Code
Fl G 4s
Focal Height
14m
Geographic Range
11.6NM

Location

City
Mutsu
Country
🇯🇵Japan
Region
Aomori Prefecture
Sea Region
east breakwater of Sekinehama
Latitude
41.3685°
Longitude
141.2397°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
10m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: A 10m white cylindrical concrete post attached to a square 1-story concrete equipment shelter.

References & Identifiers

Nearest Port
Ohata(3.6 km)
Admiralty No.
M6631.6
NGA No.
3846.5
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Frequently Asked Questions

How do mariners identify Sekinehama Kō East Breakwater Lighthouse at night?+
Sekinehama Kō East Breakwater displays the characteristic Fl Green 4s. 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 Sekinehama Kō East Breakwater Lighthouse guide vessels into?+
Sekinehama Kō East Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Ohata at 3.9 NM to the NW. Other ports served include Ominato (7.2 NM SSW), Shiriyazaki (9.1 NM ENE), Kawauchi (15.3 NM SW), Sai, Aomori (17.5 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Sekinehama Kō East Breakwater Lighthouse still active and maintained?+
Yes, Sekinehama 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 Sekinehama Kō East Breakwater Lighthouse?+
Sekinehama 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 Sekinehama Kō East Breakwater Lighthouse?+
You can track vessels near Sekinehama 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.