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Otoshi Hana Lighthouse

Fl Green 8s🇯🇵Uwajima, JPOperational

Location & Light Range

About Otoshi Hana Lighthouse

Also known as: Otoshi Hana (Otoshibana)

This green, cylindrical concrete tower stands 9.5 meters tall, with its focal height also at 9.5 meters. It is mounted on a round concrete pier and is located approximately 1.2 kilometers east of Komobuchi, Japan. The lighthouse emits a single green flash every 8 seconds, visible for 10.2 nautical miles. The site is open to visitors arriving by boat, but the tower itself is not accessible to the public. It is situated off a promontory in the Ehime Prefecture.

Why it matters: Otoshi Hana lighthouse marks the promontory east of Komobuchi, guiding vessels past this coastal feature.

Light & Optic

Characteristic Signature
Fl Green 8s
Flash Type
Flashing
Light Color
Green
Interval
8s
Raw Code
Fl G 8s
Focal Height
9.5m
Geographic Range
10.2NM

Location

City
Uwajima
Country
🇯🇵Japan
Region
Ehime Prefecture
Sea Region
Located just off a promontory about 1.2 km east of Komobuchi, Japan.
Latitude
33.1974°
Longitude
132.4193°

References & Identifiers

Nearest Port
Shitaba(2.6 km)
Admiralty No.
M5614.4
NGA No.
10420
ARLHS No.
JPN-110

Tower & Structure

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

Structure: round concrete tower with gallery, mounted on a round concrete pier

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 Otoshi Hana Lighthouse at night?+
Otoshi Hana displays the characteristic Fl Green 8s. 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 Otoshi Hana Lighthouse guide vessels into?+
Otoshi Hana Lighthouse assists vessels approaching 5 nearby ports. The closest is Hyakunoura at 5.5 NM to the ENE. Other ports served include Iwamatsu (6 NM SE), Uwajima (6.7 NM ENE), Yoshida, Ehime (7.4 NM NE), Aji (7.5 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Otoshi Hana Lighthouse still active and maintained?+
Yes, Otoshi 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 Otoshi Hana Lighthouse?+
Otoshi 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 Otoshi Hana Lighthouse?+
You can track vessels near Otoshi 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.