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Gōnoura Kō Inner Breakwater Lighthouse

Fl White 4s🇯🇵Iki, JPOperational

Location & Light Range

About Gōnoura Kō Inner Breakwater Lighthouse

Also known as: North

A square concrete tower, standing 8 meters tall, marks the inner north breakwater of Gōnoura Kō harbor. This structure, with a focal height of 14 meters, emits a white light with a single flash every 4 seconds. It is attached to a small concrete equipment building. The lighthouse is located in Iki, within Japan's Nagasaki Prefecture. Its geographic range extends to 11.6 nautical miles, aiding vessels in navigating the port's entrance and inner channels. While the site is open, public access to the tower itself is restricted.

Why it matters: This lighthouse is indispensable for the safe navigation of all vessels utilizing Gōnoura Kō harbor, specifically guiding them around the inner north breakwater.

Light & Optic

Characteristic Signature
Fl White 4s
Flash Type
Flashing
Light Color
White
Interval
4s
Raw Code
Fl W 4s
Focal Height
14m
Geographic Range
11.6NM

Location

City
Iki
Country
🇯🇵Japan
Region
Nagasaki Prefecture
Sea Region
Located on the inner north breakwater of Gōnoura Kō harbor in Japan.
Latitude
33.7424°
Longitude
129.6832°

References & Identifiers

Nearest Port
Yobuko(15.8 km)
Admiralty No.
M5259.25
NGA No.
12688
ARLHS No.
JPN-160

Tower & Structure

Tower Height
8m
Tower Shape
square
Material
concrete

Structure: square concrete tower atached to a small concrete equipment building

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 Gōnoura Kō Inner Breakwater Lighthouse at night?+
Gōnoura Kō Inner Breakwater displays the characteristic Fl White 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Gōnoura Kō Inner Breakwater Lighthouse guide vessels into?+
Gōnoura Kō Inner Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Ashibe at 5.4 NM to the NE. Other ports served include Katsumoto (7 NM N), Yobuko (15.9 NM SE), Tobo (20 NM SE), Karatsu (21 NM SE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Gōnoura Kō Inner Breakwater Lighthouse still active and maintained?+
Yes, Gōnoura Kō Inner 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 Gōnoura Kō Inner Breakwater Lighthouse?+
Gōnoura Kō Inner 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 Gōnoura Kō Inner Breakwater Lighthouse?+
You can track vessels near Gōnoura Kō Inner 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.