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Iwafune Kō Detached Breakwater Lighthouse

Fl Green 3s🇯🇵Murakami, JPOperational

Location & Light Range

About Iwafune Kō Detached Breakwater Lighthouse

This white, cylindrical concrete tower stands 10 meters tall, with its light positioned 15 meters above sea level. It is situated on the south end of Iwafune harbor's detached breakwater in Murakami, Niigata Prefecture, Japan. The lighthouse emits a single green flash every three seconds. Its geographic range extends to 11.9 nautical miles. The structure serves as a maritime utility, guiding vessels into the harbor.

Why it matters: This light provides a clear navigational reference for vessels entering and exiting Iwafune harbor, marking the end of the detached breakwater and aiding safe passage into Murakami.

Light & Optic

Characteristic Signature
Fl Green 3s
Flash Type
Flashing
Light Color
Green
Interval
3s
Raw Code
Fl G 3s
Focal Height
15m
Geographic Range
11.9NM

Location

City
Murakami
Country
🇯🇵Japan
Region
Niigata Prefecture
Sea Region
Iwafune harbor in Murakami, marking the south end of its detached breakwater.
Latitude
38.1830°
Longitude
139.4175°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

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

Structure: round cylindrical concrete tower

References & Identifiers

Nearest Port
Iwafune(0.5 km)
Admiralty No.
M7090.7
NGA No.
3405
ARLHS No.
JPN-187
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Frequently Asked Questions

How do mariners identify Iwafune Kō Detached Breakwater Lighthouse at night?+
Iwafune Kō Detached Breakwater displays the characteristic Fl Green 3s. 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 Iwafune Kō Detached Breakwater Lighthouse guide vessels into?+
Iwafune Kō Detached Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Iwafune at 0.6 NM to the ENE. Other ports served include Ii (13.2 NM SW), Niigatahigashi (13.2 NM SW), Niigata (17 NM SW), Uchiura, Ishikawa (18.6 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Iwafune Kō Detached Breakwater Lighthouse still active and maintained?+
Yes, Iwafune Kō Detached 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 Iwafune Kō Detached Breakwater Lighthouse?+
Iwafune Kō Detached 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 Iwafune Kō Detached Breakwater Lighthouse?+
You can track vessels near Iwafune Kō Detached 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.