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Kozuchishima Lighthouse

Iso W 6s🇯🇵Seto Naikai Eastern, JPOperational

Kozuchishima Lighthouse is a maritime navigation aid located in Seto Naikai Eastern, JP. It is currently operational and active, providing guidance to vessels navigating the surrounding waters. The light sits at a focal height of 15 meters above mean sea level. Under standard atmospheric conditions, the light is visible up to 8 nautical miles (approximately 14.8 km) from the observer.

Light characteristic: The identifying signal of this lighthouse is Iso W 6s. This means the light produces 1 flash every 6 seconds. Mariners use this distinctive pattern to positively identify the light and distinguish it from other aids to navigation in the area. The light displays a white signal, the most common color for major coastal lights.

Visibility and range: With a focal height of 15 meters and a nominal range of 8 nautical miles, this light serves as a significant coastal navigation aid. Vessels transiting along the coast or approaching from moderate distances can use this light for position fixing and course confirmation.

Position: Kozuchishima Lighthouse is positioned at 34.3964°N, 133.9221°E, near Seto Naikai Eastern in JP. The blue circle on the map represents the nominal 8-nautical-mile range of the light.

Geographic context: Kozuchishima Lighthouse is situated on the Sea of Japan, within the Japan / Korea shipping lane — a busy shipping corridor linking the major ports of Japan and South Korea. The location falls within the subtropical climate zone with mild winters and warm summers.

Nearby lighthouses in JP: Other lighthouses in the region include Abashiri East Breakwater, Abashiri Island Breakwater North End, Abashiri North Breakwater, Abashiri South Breakwater East End, Abuka Kō. View all on the Lighthouses Directory.

Characteristic Signature
Iso W 6s
Flash Type
Isophase
Light Color
White
Flash Count
1 flash
Interval
6s
Focal Height
15m
Light Range
8NM (14.8 km)
Status
ACTIVE
City
Seto Naikai Eastern
Country
🇯🇵JP
Latitude
34.3964°
Longitude
133.9221°
Flag
Type
Name
Dist.
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How far offshore can Kozuchishima Lighthouse be seen?+
With a focal height of 15 meters and a nominal range of 8 nautical miles (approximately 14.8 km), Kozuchishima is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. This range makes it a significant coastal navigation aid for vessels transiting the area.
How do mariners identify Kozuchishima Lighthouse at night?+
Kozuchishima displays the characteristic Iso W 6s — 1 white flash every 6 seconds. 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.
Which ports and harbors does Kozuchishima Lighthouse guide vessels into?+
Kozuchishima Lighthouse assists vessels approaching 5 nearby ports. The closest is Hibi at 3.5 NM to the N. Other ports served include Shibukawa (3.8 NM NNW), Tamano (4.6 NM N), Sakaide (4.7 NM SW), Naoshima (5 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kozuchishima Lighthouse still active and maintained?+
Yes, Kozuchishima 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 Kozuchishima Lighthouse?+
Kozuchishima 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 Kozuchishima Lighthouse?+
You can track vessels near Kozuchishima 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.