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Kuji Outer Breakwater Lighthouse

Iso Red 6s🇯🇵Kuji, JPOperational

Location & Light Range

About Kuji Outer Breakwater Lighthouse

This lighthouse consists of an 8.5-meter red concrete post mounted on a square, single-story equipment room. It is situated at the very end of Kuji's main breakwater. The structure's light emits a single red flash on a 6-second cycle. It has a geographic range of 11.6 nautical miles and its focal height is 14 meters. The lighthouse is located approximately 0.5 kilometers from the nearest port, Kuji.

Why it matters: This lighthouse is essential for safe navigation into Kuji Harbor, marking the end of the main breakwater and warning vessels of potential collision with its submerged extension.

Light & Optic

Characteristic Signature
Iso Red 6s
Flash Type
Isophase
Light Color
Red
Interval
6s
Raw Code
Iso R 6s
Focal Height
14m
Geographic Range
11.6NM

Location

City
Kuji
Country
🇯🇵Japan
Region
Iwate Prefecture
Sea Region
End of the main breakwater of Kuji.
Latitude
40.1893°
Longitude
141.8126°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
8.5m
Tower Color
red
Material
concrete

Structure: An 8.5m red concrete post attached to a square 1-story equipment room.

References & Identifiers

Nearest Port
Kuji(0.5 km)
Admiralty No.
M6610.3
NGA No.
3978
ARLHS No.
JPN-1137
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Frequently Asked Questions

How do mariners identify Kuji Outer Breakwater Lighthouse at night?+
Kuji Outer Breakwater displays the characteristic Iso Red 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 red color may indicate a specific sector or warning zone.
Which ports and harbors does Kuji Outer Breakwater Lighthouse guide vessels into?+
Kuji Outer Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Kuji, Iwate at 0.7 NM to the NNW. Other ports served include NODA (4.6 NM SSE), Kofu (17.1 NM NNW), Sakaki (17.7 NM NNW), Omoto (21.7 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kuji Outer Breakwater Lighthouse still active and maintained?+
Yes, Kuji Outer 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 Outer Breakwater Lighthouse?+
Kuji Outer 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 Outer Breakwater Lighthouse?+
You can track vessels near Kuji Outer 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.