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Ushi Shima Hazard Beacon Lighthouse

F White🇯🇵Kuji, JPOperational

Location & Light Range

About Ushi Shima Hazard Beacon Lighthouse

A 10-meter tall, semielliptical white concrete tower on Ushi Shima island, near Kuji, Iwate Prefecture, Japan. The light, situated 70 meters above sea level, produces a continuous white flash (F W) detectable up to 21.4 nautical miles. The illumination comes from a window opening in the structure. This marker is located about 1.5 kilometers from Kuji port.

Why it matters: This marker warns vessels of a reef 1.1 kilometers southeast of Ushi Shima, situated 40 meters south of the island's primary light, helping avoid collisions in the area.

Light & Optic

Characteristic Signature
F White
Flash Type
Fixed
Light Color
White
Raw Code
F W
Focal Height
70m
Geographic Range
21.4NM

Location

City
Kuji
Country
🇯🇵Japan
Region
Iwate Prefecture
Sea Region
Located on Ushi Shima island, this beacon illuminates a reef approximately 1.1 km to its southeast, situated 40 meters south of the island's main light.
Latitude
40.2178°
Longitude
141.8347°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
10m
Tower Shape
semielliptical
Tower Color
white
Material
concrete

Structure: semielliptical white concrete tower; the light is shown through a window

References & Identifiers

Nearest Port
Kuji(1.5 km)
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Frequently Asked Questions

How do mariners identify Ushi Shima Hazard Beacon Lighthouse at night?+
Ushi Shima Hazard Beacon displays the characteristic F 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Ushi Shima Hazard Beacon Lighthouse guide vessels into?+
Ushi Shima Hazard Beacon Lighthouse assists vessels approaching 5 nearby ports. The closest is Kuji, Iwate at 1.8 NM to the SW. Other ports served include NODA (6.2 NM S), Kofu (16 NM NNW), Sakaki (16.5 NM NNW), Noh (23 NM NW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ushi Shima Hazard Beacon Lighthouse still active and maintained?+
Yes, Ushi Shima Hazard Beacon 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 Ushi Shima Hazard Beacon Lighthouse?+
Ushi Shima Hazard Beacon 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 Ushi Shima Hazard Beacon Lighthouse?+
You can track vessels near Ushi Shima Hazard Beacon 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.