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Yasui Saki Lighthouse

Iso W 4s🇯🇵Northern Honshū, JPOperational

Location & Light Range

About Yasui Saki Lighthouse

This metal pile beacon on Northern Honshū stands 10 meters tall, with its light originating 25 meters above sea level. The white tower displays an isophase white light that completes a cycle every 4 seconds. Its geographic range extends to 12 nautical miles. This structure was established to aid navigation.

Light & Optic

Characteristic Signature
Iso W 4s
Flash Type
Isophase
Light Color
White
Flash Count
1 flash
Interval
4s
Raw Code
Iso.W. period 4s
Focal Height
25m
Geographic Range
12NM

Location

City
Northern Honshū
Country
🇯🇵JP
Latitude
40.9617°
Longitude
140.9777°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
10m
Tower Color
white
Material
metal

Structure: Metal pile beacon; 10. Lights are shown at Point Hanson Jetty 1km. E

References & Identifiers

Admiralty No.
M6642
NGA No.
3768
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Frequently Asked Questions

How do mariners identify Yasui Saki Lighthouse at night?+
Yasui Saki displays the characteristic Iso 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 Yasui Saki Lighthouse guide vessels into?+
Yasui Saki Lighthouse assists vessels approaching 5 nearby ports. The closest is Taki at 0.3 NM to the ESE. Other ports served include Noheji (8.6 NM SE), Wakinosawa (13 NM NNW), Aomori (13.1 NM WSW), Kawauchi (14.2 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yasui Saki Lighthouse still active and maintained?+
Yes, Yasui 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 Yasui Saki Lighthouse?+
Yasui 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 Yasui Saki Lighthouse?+
You can track vessels near Yasui 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.