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Hamajima Ko Lighthouse

Fl W 4s🇯🇵Honshu-South Coast, JPOperational

Location & Light Range

About Hamajima Ko Lighthouse

This lighthouse displays a white light with a single flash every 4 seconds. Its focal height reaches 20 meters above sea level. The station is operational and provides a geographic range of 5 nautical miles. The structure is situated on the Honshu-South Coast.

Light & Optic

Characteristic Signature
Fl W 4s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
4s
Raw Code
Fl.W. period 4s
Focal Height
20m
Light Range
5NM (9.3 km)
Geographic Range
5NM

References & Identifiers

Admiralty No.
M6033
NGA No.
6440

Location

City
Honshu-South Coast
Country
🇯🇵JP
Latitude
34.2912°
Longitude
136.7652°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How far offshore can Hamajima Ko Lighthouse be seen?+
With a focal height of 20 meters and a nominal range of 5 nautical miles (approximately 9.3 km), Hamajima Ko 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 Hamajima Ko Lighthouse at night?+
Hamajima Ko displays the characteristic Fl W 4s — 1 white 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.
Which ports and harbors does Hamajima Ko Lighthouse guide vessels into?+
Hamajima Ko Lighthouse assists vessels approaching 5 nearby ports. The closest is Hamajima at 0.7 NM to the NW. Other ports served include Gokasho (4.8 NM NW), Matoya (7.8 NM NE), Toba (12.2 NM NNE), Yoshizu (12.8 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Hamajima Ko Lighthouse still active and maintained?+
Yes, Hamajima Ko 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 Hamajima Ko Lighthouse?+
Hamajima Ko 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 Hamajima Ko Lighthouse?+
You can track vessels near Hamajima Ko 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.