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Tsuken Shima Lighthouse

Fl White 4s🇯🇵Uruma, JPOperational

Location & Light Range

About Tsuken Shima Lighthouse

Also known as: Tuken

Established in 1976, the Tsuken Shima lighthouse is a 14-meter tall cylindrical concrete tower located on Tsuken Island, east of Okinawa Honto. Its focal height reaches 51 meters, providing a geographic range of 18.8 nautical miles. The structure features a gallery and emits a single white flash every 4 seconds. While the lighthouse site is accessible to the public, the tower itself is closed to entry, maintaining its operational status. It guides vessels through the waters east of Okinawa.

Why it matters: This lighthouse is important for the safe navigation of local vessels, particularly ferries and fishing boats, operating in the coastal shipping lanes of the Ryukyu Islands.

Light & Optic

Characteristic Signature
Fl White 4s
Flash Type
Flashing
Light Color
White
Interval
4s
Raw Code
Fl W 4s
Focal Height
51m
Geographic Range
18.8NM

Construction & History

Year Built
1976

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
14m
Tower Shape
cylindrical
Material
concrete

Structure: round cylindrical concrete tower with gallery

Location

City
Uruma
Country
🇯🇵Japan
Region
Okinawa Prefecture
Sea Region
Tsuken Island, Japan, guiding vessels in the waters east of Okinawa Honto.
Latitude
26.2492°
Longitude
127.9370°

References & Identifiers

Nearest Port
Nakagusuku(6.6 km)
ARLHS No.
JPN-687
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Frequently Asked Questions

How do mariners identify Tsuken Shima Lighthouse at night?+
Tsuken Shima 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 Tsuken Shima Lighthouse guide vessels into?+
Tsuken Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is Nakagusuku at 1.5 NM to the NW. Other ports served include KinNakagusuku (6.4 NM NW), Gushikawa (7.1 NM NNW), Nishihara (7.6 NM WSW), Tokujin (7.6 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tsuken Shima Lighthouse still active and maintained?+
Yes, Tsuken 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 Tsuken Shima Lighthouse?+
You can track vessels near Tsuken 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.