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Mitoko Shima Lighthouse

Oc White 6s🇯🇵Saikai, JPOperational

Location & Light Range

About Mitoko Shima Lighthouse

Also known as: Mitoko Shima (Mitokojima)

This cylindrical concrete tower, standing 11 meters tall, is painted white and emits a white light with an occulting characteristic, showing a white flash every 6 seconds. Its focal height reaches 48 meters above sea level, providing a geographic range of 18.4 nautical miles. The lighthouse is situated on an island about 2.5 kilometers southeast of Sakito, serving the Saikai area of Nagasaki Prefecture. It was built to illuminate a nearby reef, a submerged hazard in the sea region.

Why it matters: The lighthouse's primary function is to light a nearby reef, thereby preventing groundings and ensuring safe passage for vessels navigating the waters southeast of Sakito.

Light & Optic

Characteristic Signature
Oc White 6s
Flash Type
Occulting
Light Color
White
Interval
6s
Raw Code
Oc W 6s
Focal Height
48m
Geographic Range
18.4NM

Location

City
Saikai
Country
🇯🇵Japan
Region
Nagasaki Prefecture
Sea Region
Located on an island about 2.5 km southeast of Sakito, illuminating a nearby reef.
Latitude
33.0094°
Longitude
129.5362°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
11m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round concrete tower

References & Identifiers

Nearest Port
Sakito(1.6 km)
Admiralty No.
M5211
NGA No.
11900
ARLHS No.
JPN-363
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Frequently Asked Questions

How do mariners identify Mitoko Shima Lighthouse at night?+
Mitoko Shima displays the characteristic Oc White 6s. 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 Mitoko Shima Lighthouse guide vessels into?+
Mitoko Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is Ôshima, Nagasaki at 4.5 NM to the ENE. Other ports served include Matsushima, Nagasaki (5.2 NM SE), Matsuura, Nagasaki (5.6 NM SE), Nanatsugama (5.6 NM SE), Sakito (5.6 NM SE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Mitoko Shima Lighthouse still active and maintained?+
Yes, Mitoko 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.
What shipping routes pass near Mitoko Shima Lighthouse?+
Mitoko Shima 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 Mitoko Shima Lighthouse?+
You can track vessels near Mitoko 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.