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Kouri Shima Lighthouse

Iso W 6s🇯🇵Okinawa, JPOperational

Location & Light Range

About Kouri Shima Lighthouse

This lighthouse stands 53 meters above sea level on Okinawa. It projects an isophase white light, completing a full cycle every 6 seconds. The light's visibility extends to 7 nautical miles, guiding vessels in the surrounding waters. The operational status confirms its continued use as a navigational aid.

Light & Optic

Characteristic Signature
Iso W 6s
Flash Type
Isophase
Light Color
White
Flash Count
1 flash
Interval
6s
Raw Code
Iso.W. period 6s
Focal Height
53m
Geographic Range
7NM

References & Identifiers

Admiralty No.
M4763.44
NGA No.
13444

Location

City
Okinawa
Country
🇯🇵JP
Latitude
26.7105°
Longitude
128.0108°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Kouri Shima Lighthouse at night?+
Kouri Shima 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 Kouri Shima Lighthouse guide vessels into?+
Kouri Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is Kouri at 1 NM to the SSE. Other ports served include Unten (1.9 NM S), Nago (8 NM SSW), Motobu (8.1 NM WSW), Sesoko (8.3 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kouri Shima Lighthouse still active and maintained?+
Yes, Kouri Shima 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.
How can I track vessels near Kouri Shima Lighthouse?+
You can track vessels near Kouri Shima 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.