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Awa Shima Kō East Breakwater Lighthouse

Fl Green 4s🇯🇵Awashimaura, JPOperational

Location & Light Range

About Awa Shima Kō East Breakwater Lighthouse

Awa Shima Kō East Breakwater lighthouse was established and first lit in 1977. The structure is a white, cylindrical concrete tower standing 11 meters tall, with its focal plane at 13 meters. It rises from a square, one-story concrete equipment building. The lighthouse emits a single green flash every 4 seconds and has a geographic range of 11.3 nautical miles. It is located at the extremity of the east breakwater of Awa Shima harbor in Awashimaura, Niigata Prefecture.

Why it matters: This lighthouse marks the end of the east breakwater, a critical navigational hazard for vessels entering Awa Shima harbor.

Light & Optic

Characteristic Signature
Fl Green 4s
Flash Type
Flashing
Light Color
Green
Interval
4s
Raw Code
Fl G 4s
Focal Height
13m
Geographic Range
11.3NM

Construction & History

Year Built
1977

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

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

Structure: square cylindrical concrete tower rising from a rectangular 1-story concrete equipment building

Location

City
Awashimaura
Country
🇯🇵Japan
Region
Niigata Prefecture
Sea Region
Located at the end of the east (really south) breakwater of Awa Shima harbor.
Latitude
38.4537°
Longitude
139.2387°

References & Identifiers

Nearest Port
Nezugaseki(15.7 km)
Admiralty No.
M7089.5
NGA No.
3420
USCG No.
JCG-1362
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Frequently Asked Questions

How do mariners identify Awa Shima Kō East Breakwater Lighthouse at night?+
Awa Shima 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 Awa Shima Kō East Breakwater Lighthouse guide vessels into?+
Awa Shima Kō East Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Uchiura, Ishikawa at 1.2 NM to the NE. Other ports served include Nezugaseki (16 NM ENE), Iwafune (18.3 NM SSE), Atsumi (19.5 NM ENE), Kobato (23.6 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Awa Shima Kō East Breakwater Lighthouse still active and maintained?+
Yes, Awa Shima 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 Awa Shima Kō East Breakwater Lighthouse?+
Awa Shima 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 Awa Shima Kō East Breakwater Lighthouse?+
You can track vessels near Awa Shima 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.