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Shiroyama South Breakwater Lighthouse

Oc Red 4s🇯🇵Kami, JPOperational

Location & Light Range

About Shiroyama South Breakwater Lighthouse

A cylindrical concrete tower stands 10 meters tall, painted red, at the end of Kasumi's Shiroyama harbor south breakwater. Mounted on a large square concrete base, the structure's focal plane reaches 11 meters above sea level. It emits an occulting red light, characterized by four-second cycles. This light has a geographic range of 10.7 nautical miles. The lighthouse is located near Kami, in Japan's Hyogo Prefecture, with Shibayama port situated 1.8 kilometers away.

Why it matters: This lighthouse marks the end of the south breakwater, guiding vessels safely into and out of Kasumi's Shiroyama harbor.

Light & Optic

Characteristic Signature
Oc Red 4s
Flash Type
Occulting
Light Color
Red
Interval
4s
Raw Code
Oc R 4s
Focal Height
11m
Geographic Range
10.7NM

Location

City
Kami
Country
🇯🇵Japan
Region
Hyogo Prefecture
Sea Region
end of the south breakwater of Kasumi's Shiroyama harbor
Latitude
35.6457°
Longitude
134.6280°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
10m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: round red concrete tower mounted on a large square concrete base

References & Identifiers

Nearest Port
Shibayama(1.8 km)
Admiralty No.
M7282
NGA No.
2392
ARLHS No.
JPN-1532
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Frequently Asked Questions

How do mariners identify Shiroyama South Breakwater Lighthouse at night?+
Shiroyama South Breakwater displays the characteristic Oc Red 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 red color may indicate a specific sector or warning zone.
Which ports and harbors does Shiroyama South Breakwater Lighthouse guide vessels into?+
Shiroyama South Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Shibayama at 1.8 NM to the ENE. Other ports served include Yasugi (3.8 NM E), Hamasaka (8.8 NM W), Tsui (10.1 NM E), Tsuiyama (10.1 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Shiroyama South Breakwater Lighthouse still active and maintained?+
Yes, Shiroyama 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 Shiroyama South Breakwater Lighthouse?+
Shiroyama 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 Shiroyama South Breakwater Lighthouse?+
You can track vessels near Shiroyama 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.