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Uozu Ko Lighthouse

Fl G 4s🇯🇵Honshu-Northwest Coast, JPOperational

Location & Light Range

About Uozu Ko Lighthouse

This square latticed metal tower, standing 50 meters high, is painted with alternating white and red bands. It is located on the Honshu-Northwest Coast. The lighthouse is equipped with a green light that produces a single flash every 4 seconds. Its operational status is limited to nighttime hours only.

Light & Optic

Characteristic Signature
Fl G 4s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
4s
Raw Code
Fl.G. period 4s
Focal Height
13m
Light Range
7NM (13.0 km)
Geographic Range
7NM

Location

City
Honshu-Northwest Coast
Country
🇯🇵JP
Latitude
36.8205°
Longitude
137.3915°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
50m
Tower Shape
square
Tower Color
white and red
Material
metal

Structure: Square latticed tower; 50. Operates at night only

References & Identifiers

Admiralty No.
M7142
NGA No.
3132
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Frequently Asked Questions

How far offshore can Uozu Ko Lighthouse be seen?+
With a focal height of 13 meters and a nominal range of 7 nautical miles (approximately 13.0 km), Uozu Ko is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. As a shorter-range light, it primarily serves nearshore and coastal traffic.
How do mariners identify Uozu Ko Lighthouse at night?+
Uozu Ko displays the characteristic Fl G 4s — 1 green flash every 4 seconds. 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 Uozu Ko Lighthouse guide vessels into?+
Uozu Ko Lighthouse assists vessels approaching 5 nearby ports. The closest is Uozu, Toyama at 0.2 NM to the N. Other ports served include Fushiki (12.8 NM WSW), Hiki (12.8 NM WSW), Toyama (12.8 NM WSW), Toyamashinko (13.6 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Uozu Ko Lighthouse still active and maintained?+
Yes, Uozu Ko 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 Uozu Ko Lighthouse?+
Uozu Ko 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 Uozu Ko Lighthouse?+
You can track vessels near Uozu Ko 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.