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Sagi Shima Lighthouse

Oc White 8s🇯🇵Mihara, JPOperational

Location & Light Range

About Sagi Shima Lighthouse

This operational lighthouse stands at the northeastern point of Sagi Shima island, guiding vessels in the waters southwest of the port of Mihara. Constructed of concrete, it is a cylindrical tower standing 7 meters tall, with its light positioned 27 meters above sea level. The white light emits one flash every 8 seconds. In 2023, the round white concrete tower was refurbished and repainted. The site is open to the public, though the tower itself remains closed.

Why it matters: The Sagi Shima lighthouse is essential for vessels navigating the busy shipping area and transiting to and from the port of Mihara.

Light & Optic

Characteristic Signature
Oc White 8s
Flash Type
Occulting
Light Color
White
Interval
8s
Raw Code
Oc W 8s
Focal Height
27m
Geographic Range
14.7NM

Construction & History

Significant events: refurbished and repainted in 2023

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
7m
Tower Shape
cylindrical
Tower Color
in 2023
Material
concrete

Structure: round white concrete tower

Location

City
Mihara
Country
🇯🇵Japan
Region
Hiroshima Prefecture
Sea Region
Sagi Shima island, northwest of Inno Shima and south of the port of Mihara, at the northeastern point of the island.
Latitude
34.3599°
Longitude
133.1169°

References & Identifiers

Nearest Port
Itozaki(1.3 km)
ARLHS No.
JPN-521
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Frequently Asked Questions

How do mariners identify Sagi Shima Lighthouse at night?+
Sagi Shima displays the characteristic Oc White 8s. 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 Sagi Shima Lighthouse guide vessels into?+
Sagi Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is Shigei at 1.6 NM to the ESE. Other ports served include Sunami (1.7 NM W), Itozaki (2.8 NM ENE), Nomi (2.8 NM ENE), Omi (2.8 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Sagi Shima Lighthouse still active and maintained?+
Yes, Sagi 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 Sagi Shima Lighthouse?+
Sagi 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 Sagi Shima Lighthouse?+
You can track vessels near Sagi 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.