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Utatsu Saki Lighthouse

Fl W 4s🇯🇵Northeastern Honshū, JPOperational

Location & Light Range

About Utatsu Saki Lighthouse

Utatsu Saki is a 35-meter-tall latticed metal tower located on Northeastern Honshū. It is painted orange and displays orange rectangular daymarks on its north, east, and west faces. The tower also carries a radar reflector. Its light emits a single white flash every 4 seconds, visible for 7 nautical miles. The focal height of the light is 50 meters.

Light & Optic

Characteristic Signature
Fl W 4s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
4s
Raw Code
Fl.W. period 4s
Focal Height
50m
Light Range
13NM (24.1 km)
Geographic Range
7NM

Location

City
Northeastern Honshū
Country
🇯🇵JP
Latitude
38.6975°
Longitude
141.5596°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
35m
Tower Shape
latticed
Tower Color
orange
Material
metal

Structure: Latticed tower, orange rectangular daymarks on N., E., and W. faces; 35. Radar reflector

References & Identifiers

Admiralty No.
M6560
NGA No.
4284
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Frequently Asked Questions

How far offshore can Utatsu Saki Lighthouse be seen?+
With a focal height of 50 meters and a nominal range of 13 nautical miles (approximately 24.1 km), Utatsu Saki is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. This range makes it a significant coastal navigation aid for vessels transiting the area.
How do mariners identify Utatsu Saki Lighthouse at night?+
Utatsu Saki displays the characteristic Fl W 4s — 1 white 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.
Which ports and harbors does Utatsu Saki Lighthouse guide vessels into?+
Utatsu Saki Lighthouse assists vessels approaching 5 nearby ports. The closest is Osaki/Mitsushima at 0.4 NM to the NNW. Other ports served include Itabashi (1 NM NW), Kisawa (3.4 NM NNW), Shizugawa (5.3 NM WSW), Aika (6.3 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Utatsu Saki Lighthouse still active and maintained?+
Yes, Utatsu Saki 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 Utatsu Saki Lighthouse?+
Utatsu Saki 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 Utatsu Saki Lighthouse?+
You can track vessels near Utatsu Saki 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.