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Shizuura Kō Lighthouse

Iso green 4s🇯🇵Matsumae, JPOperational

Location & Light Range

About Shizuura Kō Lighthouse

Also known as: Sizuura

This white, cylindrical concrete lighthouse stands 10 meters tall, with its lantern and gallery atop. Its focal plane is 14 meters above sea level, casting a green isophase light with a cycle of 6 seconds. The structure, a round concrete tower, is located at the entrance to Shizuura Port in Matsumae, Hokkaido Prefecture. Its light has a geographic range of 11.6 nautical miles. The site is open to the public, but access to the tower itself is restricted. The lighthouse is situated just 0.6 kilometers from the nearest port.

Why it matters: The lighthouse is essential for vessels navigating the entrance to Shizuura Port, a hub for fishing and coastal trade.

Light & Optic

Characteristic Signature
Iso green 4s
Flash Type
Isophase
Light Color
green
Interval
4s
Raw Code
Iso.G
Focal Height
14m
Geographic Range
11.6NM

Location

City
Matsumae
Country
🇯🇵Japan
Region
Hokkaido Prefecture
Sea Region
Shizuura Port, Japan
Latitude
41.4840°
Longitude
140.0191°

References & Identifiers

Nearest Port
Shizuura(0.6 km)
Admiralty No.
M7039
NGA No.
0984
ARLHS No.
JPN-977

Tower & Structure

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

Structure: round cylindrical concrete tower with lantern and gallery

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Shizuura Kō Lighthouse at night?+
Shizuura Kō displays the characteristic Iso green 4s. 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 Shizuura Kō Lighthouse guide vessels into?+
Shizuura Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Shizuura at 0.5 NM to the NNW. Other ports served include Matsumae (5 NM SE), Fukushima (hokkaido) (10.8 NM E), Fukushima, Hokkaido (10.9 NM E), Minmaya (21 NM SE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Shizuura Kō Lighthouse still active and maintained?+
Yes, Shizuura Kō 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 Shizuura Kō Lighthouse?+
Shizuura Kō 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 Shizuura Kō Lighthouse?+
You can track vessels near Shizuura Kō 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.