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Kuji South Breakwater Lighthouse

F Green 6s🇯🇵Kuji, JPOperational

Location & Light Range

About Kuji South Breakwater Lighthouse

A 10-meter tall, white-painted concrete cylindrical tower is situated at the end of the Kuji South Breakwater. This structure features an attached square, single-story equipment room. The light produces a single, bright green flash every six seconds (F.Fl G 6s). The focal plane is 15 meters above sea level, with a visibility range of 11.9 nautical miles. Access to the site is permitted, but climbing the tower is not.

Why it matters: This marker indicates the south breakwater's end, offering navigation aid for entry into Kuji harbor. Its specific green light characteristic serves as a clear reference for the fishing and commercial vessels frequenting the port.

Light & Optic

Characteristic Signature
F Green 6s
Flash Type
Fixed
Light Color
Green
Interval
6s
Raw Code
F.Fl G 6s
Focal Height
15m
Geographic Range
11.9NM

Location

City
Kuji
Country
🇯🇵Japan
Region
Iwate Prefecture
Sea Region
Kuji harbor, marking the end of its south breakwater.
Latitude
40.1858°
Longitude
141.8054°

References & Identifiers

Nearest Port
Kuji(0.8 km)
Admiralty No.
M6609
NGA No.
3980
ARLHS No.
JPN-1138

Tower & Structure

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

Structure: A 10m concrete post attached to a square 1-story equipment room, painted white.

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Kuji South Breakwater Lighthouse at night?+
Kuji South Breakwater displays the characteristic F 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 Kuji South Breakwater Lighthouse guide vessels into?+
Kuji South Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Kuji, Iwate at 0.8 NM to the N. Other ports served include NODA (4.5 NM SSE), Kofu (17.2 NM NNW), Sakaki (17.7 NM NNW), Omoto (21.6 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kuji South Breakwater Lighthouse still active and maintained?+
Yes, Kuji South 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 Kuji South Breakwater Lighthouse?+
Kuji South 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 Kuji South Breakwater Lighthouse?+
You can track vessels near Kuji South 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.