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Ushi Shima Lighthouse

Oc White 6s🇯🇵Kuji, JPOperational

Location & Light Range

About Ushi Shima Lighthouse

The Ushi Shima lighthouse stands on an 11-meter concrete post, which rises from a square, single-story equipment room. The entire structure is painted white and is situated on a steep-sided rock about 5 kilometers northeast of the Kuji waterfront. This rock is connected to the mainland by a walkway that is often submerged at high tide. The lighthouse emits an occulting white light, with a 6-second cycle, visible for 21.5 nautical miles. Its focal height reaches 71 meters above sea level.

Why it matters: This lighthouse is important for mariners navigating off Kuji, marking a promontory and its hazards. Its location on a rock accessible by a tidal walkway makes it a distinctive landmark.

Light & Optic

Characteristic Signature
Oc White 6s
Flash Type
Occulting
Light Color
White
Interval
6s
Raw Code
Oc W 6s
Focal Height
71m
Geographic Range
21.5NM

Location

City
Kuji
Country
🇯🇵Japan
Region
Iwate Prefecture
Sea Region
A steep-sided rock off a promontory about 5 km northeast of the Kuji waterfront.
Latitude
40.2181°
Longitude
141.8346°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
11m
Tower Shape
square
Tower Color
white
Material
concrete

Structure: A 11m concrete post rising from a square 1-story equipment room. The entire structure is painted white.

References & Identifiers

Nearest Port
Kuji(1.5 km)
Admiralty No.
M6608
ARLHS No.
JPN-320
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Frequently Asked Questions

How do mariners identify Ushi Shima Lighthouse at night?+
Ushi Shima displays the characteristic Oc White 6s. 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 Lighthouse guide vessels into?+
Ushi Shima 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 Lighthouse still active and maintained?+
Yes, Ushi 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 Ushi Shima Lighthouse?+
Ushi 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 Ushi Shima Lighthouse?+
You can track vessels near Ushi 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.