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Hamasaka Ko Lighthouse

Iso W 6s🇯🇵Honshu-North Coast, JPOperational

Location & Light Range

About Hamasaka Ko Lighthouse

This lighthouse is a 12-meter-tall quadrilateral concrete tower. It is painted white and red and displays a red and white rectangular daymark. The light is an isophase white signal, completing a cycle every 6 seconds. The focal height of the light is 74 meters, and its geographic range extends for 8 nautical miles. The tower is located on the Honshu-North Coast.

Light & Optic

Characteristic Signature
Iso W 6s
Flash Type
Isophase
Light Color
White
Flash Count
1 flash
Interval
6s
Raw Code
Iso.W. period 6s
Focal Height
74m
Light Range
8NM (14.8 km)
Geographic Range
8NM

Location

City
Honshu-North Coast
Country
🇯🇵JP
Latitude
35.6348°
Longitude
134.4391°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
12m
Tower Shape
quadrilateral
Tower Color
white and red
Material
concrete

Structure: Quadrilateral latticed tower, red and white rectangular daymark; 12

References & Identifiers

Admiralty No.
M7283.57
NGA No.
2340
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Frequently Asked Questions

How far offshore can Hamasaka Ko Lighthouse be seen?+
With a focal height of 74 meters and a nominal range of 8 nautical miles (approximately 14.8 km), Hamasaka Ko is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. This range makes it a significant coastal navigation aid for vessels transiting the area.
How do mariners identify Hamasaka Ko Lighthouse at night?+
Hamasaka Ko displays the characteristic Iso W 6s — 1 white flash every 6 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 Hamasaka Ko Lighthouse guide vessels into?+
Hamasaka Ko Lighthouse assists vessels approaching 5 nearby ports. The closest is Hamasaka at 0.5 NM to the ESE. Other ports served include Tajiri, Tottori (6.4 NM WSW), Shibayama (11 NM E), Yasugi (13.1 NM E), Tottori (13.3 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Hamasaka Ko Lighthouse still active and maintained?+
Yes, Hamasaka 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 Hamasaka Ko Lighthouse?+
Hamasaka 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 Hamasaka Ko Lighthouse?+
You can track vessels near Hamasaka 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.