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Komatsushima Kō Lighthouse

Fl G 4s🇯🇵Eastern Shikoku, JPOperational

Location & Light Range

About Komatsushima Kō Lighthouse

This red, round concrete beacon stands 12 meters above sea level. Its light emits a single red flash every 3 seconds. The structure is identified in the NGA list as 7100 and carries the Admiralty number M5565.4.

Light & Optic

Characteristic Signature
Fl G 4s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
4s
Raw Code
Fl.R. period 3s
Focal Height
12m
Geographic Range
1NM

Location

City
Eastern Shikoku
Country
🇯🇵JP
Latitude
34.0138°
Longitude
134.5997°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Shape
round
Tower Color
red
Material
concrete

Structure: Red metal beacon. TASMANIA 134 (1)

References & Identifiers

Admiralty No.
M5565.4
NGA No.
7100
ARLHS No.
JPN-2538
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Frequently Asked Questions

How do mariners identify Komatsushima Kō Lighthouse at night?+
Komatsushima Kō displays the characteristic Fl G 4s — 1 green flash every 4 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Komatsushima Kō Lighthouse guide vessels into?+
Komatsushima Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Komatsushima at 1.1 NM to the SSE. Other ports served include Tokushima (2.3 NM NNW), Imagire (5.8 NM N), Tomioka, Tokushima (6.4 NM SE), Awazu (8 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Komatsushima Kō Lighthouse still active and maintained?+
Yes, Komatsushima 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 Komatsushima Kō Lighthouse?+
Komatsushima 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 Komatsushima Kō Lighthouse?+
You can track vessels near Komatsushima 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.