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Kodasuke Se Lighthouse

Fl (3) Red 8s🇯🇵Hirado, JPOperational

Location & Light Range

About Kodasuke Se Lighthouse

Also known as: Kodasuke Se (Ko-Dasukese)

This red, cylindrical concrete tower stands 7 meters tall on a round concrete pier, with its light positioned 8.5 meters above sea level. It is situated on a reef within the Hirado Strait, approximately 800 meters northwest of the Hirado Bridge and southeast of Hirado Shima harbor. The lighthouse emits a red light with one flash every 8 seconds. The site is accessible by boat, but the tower itself is closed to the public. Its nearest port is Tabira, located 0.4 kilometers away.

Why it matters: This lighthouse is indispensable for maritime safety within the Hirado Strait, specifically marking a hazardous reef that could otherwise pose a significant threat to vessels navigating this busy channel. Its distinctive red light sequence provides clear guidance, preventing groundings and ensuring the smooth flow of traffic between the Hirado Bridge and Hirado Shima harbor.

Light & Optic

Characteristic Signature
Fl (3) Red 8s
Flash Type
Flashing
Light Color
Red
Flash Count
3 flashes
Interval
8s
Raw Code
Fl R 8s
Focal Height
8.5m
Geographic Range
9.9NM

Location

City
Hirado
Country
🇯🇵Japan
Region
Nagasaki Prefecture
Sea Region
A reef in the Hirado Strait, about 800 m northwest of the Hirado Bridge and southeast of Hirado Shima harbor.
Latitude
33.3629°
Longitude
129.5682°

References & Identifiers

Nearest Port
Tabira(0.4 km)
Admiralty No.
M5244
NGA No.
12032

Tower & Structure

Tower Height
7m
Tower Shape
cylindrical
Tower Color
red
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 Kodasuke Se Lighthouse at night?+
Kodasuke Se displays the characteristic Fl (3) Red 8s — 3 red flashes every 8 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. The red color may indicate a specific sector or warning zone.
Which ports and harbors does Kodasuke Se Lighthouse guide vessels into?+
Kodasuke Se Lighthouse assists vessels approaching 5 nearby ports. The closest is Tabira at 0.4 NM to the E. Other ports served include Hirado (0.8 NM NW), Kawachi, Nagasaki (3.3 NM SW), Emukae (3.6 NM SE), Shikamachi (5.5 NM S). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kodasuke Se Lighthouse still active and maintained?+
Yes, Kodasuke Se 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 Kodasuke Se Lighthouse?+
Kodasuke Se 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 Kodasuke Se Lighthouse?+
You can track vessels near Kodasuke Se 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.