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Katsumoto Range Rear Lighthouse

F Yellow🇯🇵Iki, JPOperational

Location & Light Range

About Katsumoto Range Rear Lighthouse

This cylindrical concrete tower stands 9.5 meters high and has a focal height of 24 meters. It is part of a range light system, working with a front light to guide vessels. The structure consists of a round concrete tower rising from a 1-story equipment building. Operational since its activation, the light emits a continuous yellow signal. This rear range light is situated on the southeastern corner of Wakamiya Shima, near Iki in Nagasaki Prefecture.

Why it matters: This range light is critical for safe navigation around Wakamiya Shima, providing a precise alignment for vessels. Its continuous yellow light, combined with the front light, helps mariners maintain their course through potentially challenging waters.

Light & Optic

Characteristic Signature
F Yellow
Flash Type
Fixed
Light Color
Yellow
Raw Code
F Y
Focal Height
24m
Geographic Range
14.1NM

Location

City
Iki
Country
🇯🇵Japan
Region
Nagasaki Prefecture
Sea Region
southeastern corner of Wakamiya Shima
Latitude
33.8626°
Longitude
129.6902°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
9.5m
Tower Shape
cylindrical
Material
concrete

Structure: round concrete tower rising from a 1-story equipment building

References & Identifiers

Nearest Port
Yobuko(21.6 km)
Admiralty No.
M5259.61
NGA No.
12648
ARLHS No.
JPN-2200
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Frequently Asked Questions

How do mariners identify Katsumoto Range Rear Lighthouse at night?+
Katsumoto Range Rear displays the characteristic F Yellow. 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 yellow color may indicate a specific sector or warning zone.
Which ports and harbors does Katsumoto Range Rear Lighthouse guide vessels into?+
Katsumoto Range Rear Lighthouse assists vessels approaching 5 nearby ports. The closest is Katsumoto at 0.3 NM to the SSE. Other ports served include Ashibe (4.7 NM SE), Yobuko (21.7 NM SSE), Tobo (25.8 NM SSE), Karatsu (26.6 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Katsumoto Range Rear Lighthouse still active and maintained?+
Yes, Katsumoto Range Rear 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 Katsumoto Range Rear Lighthouse?+
Katsumoto Range Rear 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 Katsumoto Range Rear Lighthouse?+
You can track vessels near Katsumoto Range Rear 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.