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Komosaki Lighthouse

Fl W 7s🇯🇵Shikoku-South coast, JPOperational

Location & Light Range

About Komosaki Lighthouse

This lighthouse marks the Shikoku-South coast and is operational. It emits a white light with a single flash every 7 seconds. The light source is positioned at a focal height of 142 meters above sea level. Its geographic range extends for 7 nautical miles.

Light & Optic

Characteristic Signature
Fl W 7s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
7s
Raw Code
Fl.W. period 7s
Focal Height
142m
Light Range
7NM (13.0 km)
Geographic Range
7NM

References & Identifiers

Admiralty No.
M5612
NGA No.
10492

Location

City
Shikoku-South coast
Country
🇯🇵JP
Latitude
32.9069°
Longitude
132.4758°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How far offshore can Komosaki Lighthouse be seen?+
With a focal height of 142 meters and a nominal range of 7 nautical miles (approximately 13.0 km), Komosaki is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. As a shorter-range light, it primarily serves nearshore and coastal traffic.
How do mariners identify Komosaki Lighthouse at night?+
Komosaki displays the characteristic Fl W 7s — 1 white flash every 7 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.
Which ports and harbors does Komosaki Lighthouse guide vessels into?+
Komosaki Lighthouse assists vessels approaching 5 nearby ports. The closest is Misho at 4.9 NM to the NE. Other ports served include Fukaura, Ehime (6.5 NM ENE), Ikeshima (10.7 NM E), Issai (11.2 NM SE), Sukumowan (12.1 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Komosaki Lighthouse still active and maintained?+
Yes, Komosaki 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 Komosaki Lighthouse?+
Komosaki 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 Komosaki Lighthouse?+
You can track vessels near Komosaki 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.