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Ohse Saki Lighthouse

Al Red/White🇯🇵Shinagawa, JPOperational

Location & Light Range

About Ohse Saki Lighthouse

Also known as: Ohse Saki (relocated)

The Ohse Saki Lighthouse is a cylindrical, white cast iron tower standing 15 meters tall. Originally built in 1879, it guided vessels from its post on the west end of Fukue Shima in Nagasaki Prefecture. The lighthouse featured an alternating red and white light. During World War II in 1945, its lantern roof sustained damage from gunfire. A modern lighthouse replaced its active service in 1971. The original tower was subsequently relocated to the Museum of Maritime Science in Tokyo.

Why it matters: The lighthouse's structure was prefabricated in France, and it survived damage from gunfire during World War II.

Light & Optic

Characteristic Signature
Al Red/White
Flash Type
Alternating
Light Color
Red/White
Raw Code
Al. Fl RW

Construction & History

Year Built
1879

Significant events: Gunfire damage in 1945, replaced by modern lighthouse in 1971, relocated to Museum of Maritime Science

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
15m
Tower Shape
cylindrical
Tower Color
white
Material
cast iron

Structure: round cast iron tower with lantern and gallery, painted white

Location

City
Shinagawa
Country
🇯🇵Japan
Sea Region
west end of Fukue Shima in Nagasaki Prefecture, Japan
Latitude
35.6209°
Longitude
139.7706°

References & Identifiers

Nearest Port
Tokyo(6.0 km)
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Frequently Asked Questions

How do mariners identify Ohse Saki Lighthouse at night?+
Ohse Saki displays the characteristic Al Red/White. 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 red/white color may indicate a specific sector or warning zone.
Which ports and harbors does Ohse Saki Lighthouse guide vessels into?+
Ohse Saki Lighthouse assists vessels approaching 5 nearby ports. The closest is Aomi at 0.7 NM to the ESE. Other ports served include Ariake, Tokyo (1 NM NE), Tokyo (2.8 NM ESE), Shibaura (2.9 NM NNW), Shinagawa, Tokyo (2.9 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ohse Saki Lighthouse still active and maintained?+
Yes, Ohse Saki 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 Ohse Saki Lighthouse?+
Ohse Saki 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 Ohse Saki Lighthouse?+
You can track vessels near Ohse Saki 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.