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Tōshi Kō South Breakwater Lighthouse

Oc Green 4s🇯🇵Toba, JPOperational

Location & Light Range

About Tōshi Kō South Breakwater Lighthouse

A cylindrical concrete tower painted white stands 8.5 meters tall, with its light positioned 14 meters above the water. The structure, flared at the top and connected to an equipment shelter, is located on the south breakwater of Tōshi Kō harbor. This lighthouse emits an occulting green light, flashing once every 4 seconds. It extends a geographic range of 11.6 nautical miles. The site is accessible to visitors, though the tower itself remains closed.

Why it matters: This lighthouse is essential for vessels entering Tōshi Kō harbor, specifically guiding ferries and local boats that link Tōshi Shima to Toba and ensuring reliable access for the island community.

Light & Optic

Characteristic Signature
Oc Green 4s
Flash Type
Occulting
Light Color
Green
Interval
4s
Raw Code
Oc G 4s
Focal Height
14m
Geographic Range
11.6NM

Construction & History

Significant events: 2021 closeup photo taken, 2022 photo taken

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
8.5m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round concrete tower, flared at the top and attached to a small equipment shelter

Location

City
Toba
Country
🇯🇵Japan
Region
Mie Prefecture
Sea Region
Located on a breakwater of the harbor at the east end of Tōshi Shima, an island northeast of Toba and north of Suga Shima, accessible by ferries from Toba.
Latitude
34.5317°
Longitude
136.9049°

References & Identifiers

Nearest Port
Suga(1.9 km)
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Frequently Asked Questions

How do mariners identify Tōshi Kō South Breakwater Lighthouse at night?+
Tōshi Kō South Breakwater displays the characteristic Oc Green 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Tōshi Kō South Breakwater Lighthouse guide vessels into?+
Tōshi Kō South Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Suga at 2 NM to the S. Other ports served include Toba (4.1 NM SW), Matoya (10.1 NM S), Toyohama, Aichi (10.5 NM N), Morozaki (10.8 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tōshi Kō South Breakwater Lighthouse still active and maintained?+
Yes, Tōshi Kō South Breakwater 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 Tōshi Kō South Breakwater Lighthouse?+
Tōshi Kō South Breakwater 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 Tōshi Kō South Breakwater Lighthouse?+
You can track vessels near Tōshi Kō South Breakwater 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.