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Hamasaka Kō North Detached Breakwater Lighthouse

Oc Red 4s🇯🇵Shin-onsen, JPOperational

Location & Light Range

About Hamasaka Kō North Detached Breakwater Lighthouse

First lit in 1960, this red, cylindrical concrete tower replaced an earlier light on the North (Inner) Breakwater. Standing 10 meters tall with a focal height of 13 meters, it emits an occulting red light every 4 seconds. The structure, attached to a small equipment shelter, is situated at the east end of the north detached breakwater, marking the entrance to Hamasaka harbor. This light provides a geographic range of 11.3 nautical miles. The site is open to the public, though the tower itself is closed.

Why it matters: Its placement on the detached breakwater clearly delineates the safe channel into Hamasaka harbor, preventing collisions with the barrier.

Light & Optic

Characteristic Signature
Oc Red 4s
Flash Type
Occulting
Light Color
Red
Interval
4s
Raw Code
Oc R 4s
Focal Height
13m
Geographic Range
11.3NM

Construction & History

First Lit
1960

Significant events: Replaced North (Inner) Breakwater Light

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
10m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: round concrete tower attached to a small equipment shelter

Location

City
Shin-onsen
Country
🇯🇵Japan
Region
Hyogo Prefecture
Sea Region
Located at the east end of the north detached breakwater at the entrance to Hamasaka harbor.
Latitude
35.6354°
Longitude
134.4433°

References & Identifiers

Nearest Port
Hamasaka(0.4 km)
Admiralty No.
M7283.58
NGA No.
2348
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Frequently Asked Questions

How do mariners identify Hamasaka Kō North Detached Breakwater Lighthouse at night?+
Hamasaka Kō North Detached Breakwater displays the characteristic Oc Red 4s. 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 Hamasaka Kō North Detached Breakwater Lighthouse guide vessels into?+
Hamasaka Kō North Detached Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Hamasaka at 0.4 NM to the SE. Other ports served include Tajiri, Tottori (6.6 NM WSW), Shibayama (10.8 NM E), Yasugi (12.9 NM E), Tottori (13.5 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Hamasaka Kō North Detached Breakwater Lighthouse still active and maintained?+
Yes, Hamasaka Kō North Detached Breakwater 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 Kō North Detached Breakwater Lighthouse?+
Hamasaka Kō North Detached Breakwater 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 Kō North Detached Breakwater Lighthouse?+
You can track vessels near Hamasaka Kō North Detached Breakwater 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.