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Shimo Utono Hana Lighthouse

Fl White 6s🇯🇵Kamiamakusa, JPOperational

Location & Light Range

About Shimo Utono Hana Lighthouse

Also known as: Simo

Constructed in 1955, the Shimo Utono Hana lighthouse is an 11-meter-high, square cylindrical concrete structure featuring a gallery. It emits a white flash every six seconds (Fl W 6s) from a focal plane of 45 meters, offering a visible range of 17.9 nautical miles. This operational marker is situated near Kamiamakusa, Kumamoto Prefecture, Japan. The closest harbor is Amura, 0.6 kilometers distant. Public access is permitted to the grounds, but not the tower.

Why it matters: This marker aids vessels navigating the Japanese coast, assisting in the prevention of groundings and facilitating secure transit.

Light & Optic

Characteristic Signature
Fl White 6s
Flash Type
Flashing
Light Color
White
Interval
6s
Raw Code
Fl W 6s
Focal Height
45m
Geographic Range
17.9NM

Construction & History

Year Built
1955

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
11m
Tower Shape
cylindrical
Material
concrete

Structure: square cylindrical concrete tower with gallery

Location

City
Kamiamakusa
Country
🇯🇵Japan
Region
Kumamoto Prefecture
Latitude
32.5295°
Longitude
130.4608°

References & Identifiers

Nearest Port
Amura(0.6 km)
ARLHS No.
JPN-566
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Frequently Asked Questions

How do mariners identify Shimo Utono Hana Lighthouse at night?+
Shimo Utono Hana displays the characteristic Fl White 6s. 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Shimo Utono Hana Lighthouse guide vessels into?+
Shimo Utono Hana Lighthouse assists vessels approaching 5 nearby ports. The closest is Amura at 0.6 NM to the WSW. Other ports served include Yanagi (1.6 NM NW), Aizu, Kumamoto (4.2 NM N), Akasaki, Kumamoto (4.2 NM N), Fukuura, Kumamoto (4.2 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Shimo Utono Hana Lighthouse still active and maintained?+
Yes, Shimo Utono Hana 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 Shimo Utono Hana Lighthouse?+
Shimo Utono Hana 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 Shimo Utono Hana Lighthouse?+
You can track vessels near Shimo Utono Hana 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.