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Hirasawa Kō East Breakwater Lighthouse

Fl Green 4s🇯🇵Nikaho, JPOperational

Location & Light Range

About Hirasawa Kō East Breakwater Lighthouse

This concrete lighthouse, standing 11 meters tall, marked the original end of the west breakwater at Hirasawa Kō. The structure featured a white, post-style tower rising from a square, single-story equipment room. It emitted a green flashing light every 4 seconds. The lighthouse was an 11-meter focal height structure and had a geographic range of 11 nautical miles. Its operational life concluded in 2009 and it has since been demolished.

Why it matters: The lighthouse was indispensable for ensuring safe passage for ships navigating Hirasawa Port, warning them of the original west breakwater.

Light & Optic

Characteristic Signature
Fl Green 4s
Flash Type
Flashing
Light Color
Green
Interval
4s
Raw Code
Fl G 4s
Focal Height
12m
Geographic Range
11NM

Construction & History

Significant events: Inactive since 2009, demolished

References & Identifiers

Nearest Port
Konbukariishi(0.3 km)
Admiralty No.
M7070
NGA No.
3528
ARLHS No.
JPN-1031

Tower & Structure

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

Structure: An 11m concrete post rising from a square 1-story concrete equipment room, painted white.

Location

City
Nikaho
Country
🇯🇵Japan
Region
Akita Prefecture
Sea Region
Hirasawa Kō, marking the original end of the west breakwater.
Latitude
39.2563°
Longitude
139.9113°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Hirasawa Kō East Breakwater Lighthouse at night?+
Hirasawa 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 Hirasawa Kō East Breakwater Lighthouse guide vessels into?+
Hirasawa Kō East Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Konoura at 0.1 NM to the WSW. Other ports served include Hirasawa (3.2 NM NE), Kisakata (3.4 NM S), Nikaho (9.6 NM NNE), TOBISHIMA (16.8 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Hirasawa Kō East Breakwater Lighthouse still active and maintained?+
Yes, Hirasawa 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 Hirasawa Kō East Breakwater Lighthouse?+
Hirasawa 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 Hirasawa Kō East Breakwater Lighthouse?+
You can track vessels near Hirasawa 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.