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Shishikui Kō Lighthouse

F Green 5s🇯🇵Kaiyo, JPOperational

Location & Light Range

About Shishikui Kō Lighthouse

This cylindrical concrete tower stands 9.5 meters tall and emits a green light with a single flash every 5 seconds. Its focal height reaches 11 meters above sea level, providing a geographic range of 10.7 nautical miles. The lighthouse has a round hourglass shape and is painted white. It is situated at the end of the south breakwater of Shishikui harbor in Kaiyo, Tokushima Prefecture, Japan.

Why it matters: The Shishikui Kō lighthouse is essential for the safe navigation of local fishing boats and other small vessels entering Shishikui harbor, clearly marking the end of the south breakwater. Its distinctive hourglass-shaped tower provides a unique visual landmark during daylight hours, complementing its green light that guides mariners after dark.

Light & Optic

Characteristic Signature
F Green 5s
Flash Type
Fixed
Light Color
Green
Interval
5s
Raw Code
F.Fl G 5s
Focal Height
11m
Geographic Range
10.7NM

Location

City
Kaiyo
Country
🇯🇵Japan
Region
Tokushima Prefecture
Sea Region
Shishikui harbor, at the end of its short south breakwater.
Latitude
33.5622°
Longitude
134.3125°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
9.5m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round hourglass-shaped concrete tower

References & Identifiers

Nearest Port
Shishikui(0.0 km)
ARLHS No.
JPN-2548
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Frequently Asked Questions

How do mariners identify Shishikui Kō Lighthouse at night?+
Shishikui Kō displays the characteristic F Green 5s. 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 Shishikui Kō Lighthouse guide vessels into?+
Shishikui Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Kannoura at 1.2 NM to the SSW. Other ports served include Asakawa (5 NM NE), Hiwasa (15.5 NM NE), Nahari (17 NM WSW), Yuki (18.5 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Shishikui Kō Lighthouse still active and maintained?+
Yes, Shishikui 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 Shishikui Kō Lighthouse?+
Shishikui 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 Shishikui Kō Lighthouse?+
You can track vessels near Shishikui 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.