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Tosamurotsu Kō South Breakwater Lighthouse

Fl (2) Red 6s🇯🇵Muroto, JPOperational

Location & Light Range

About Tosamurotsu Kō South Breakwater Lighthouse

This red, cylindrical concrete lighthouse stands 17 meters tall at the end of Muroto port's main breakwater. Its light, positioned 19 meters above sea level, emits a single red flash every 6 seconds. The structure is a round, tapered concrete tower situated about 5 kilometers northwest of Muroto Saki. It guards the southern entrance to the port, approximately 0.1 kilometers from the nearest port facilities at Murotsu. Though accessible only by boat, the lighthouse and its immediate surroundings are closed to the public.

Why it matters: The lighthouse clearly marks the extremity of the south breakwater, guiding vessels into the sheltered waters of Muroto port.

Light & Optic

Characteristic Signature
Fl (2) Red 6s
Flash Type
Flashing
Light Color
Red
Flash Count
2 flashes
Interval
6s
Raw Code
Fl R 6s
Focal Height
19m
Geographic Range
12.9NM

Location

City
Muroto
Country
🇯🇵Japan
Region
Kochi Prefecture
Sea Region
Located at the end of the south (main) breakwater of Muroto, a port in the lee of Muroto Saki, about 5 km northwest of the point of the cape.
Latitude
33.2856°
Longitude
134.1426°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
17m
Tower Shape
cylindrical
Tower Color
red
Material
concrete

Structure: round tapered concrete tower

References & Identifiers

Nearest Port
Murotsu, Kochi(0.1 km)
Admiralty No.
M5589
NGA No.
10100
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Frequently Asked Questions

How do mariners identify Tosamurotsu Kō South Breakwater Lighthouse at night?+
Tosamurotsu Kō South Breakwater displays the characteristic Fl (2) Red 6s — 2 red flashes 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. The red color may indicate a specific sector or warning zone.
Which ports and harbors does Tosamurotsu Kō South Breakwater Lighthouse guide vessels into?+
Tosamurotsu Kō South Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Murotsu, Kochi at 0.2 NM to the ESE. Other ports served include Nahari (10.3 NM NW), Kannoura (17.4 NM NNE), Asakawa (23.6 NM NNE), Kochi (32.7 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tosamurotsu Kō South Breakwater Lighthouse still active and maintained?+
Yes, Tosamurotsu Kō South 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 Tosamurotsu Kō South Breakwater Lighthouse?+
Tosamurotsu Kō South 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 Tosamurotsu Kō South Breakwater Lighthouse?+
You can track vessels near Tosamurotsu Kō South 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.