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Senpōshi Kō South Breakwater Lighthouse

Iso R 6s🇯🇵Rishiri and Rebun, Hokkaido, JPOperational

Location & Light Range

About Senpōshi Kō South Breakwater Lighthouse

This lighthouse is a quadrilateral latticed metal tower standing 14 meters tall. Its focal height reaches 13 meters above sea level. The structure is painted in alternating bands of white and red, and features a rectangular daymark also in red and white. It emits an isophase green light on a 6-second cycle and has a geographic range of 5 nautical miles.

Light & Optic

Characteristic Signature
Iso R 6s
Flash Type
Isophase
Light Color
Red
Flash Count
1 flash
Interval
6s
Raw Code
Iso.G. period 6s
Focal Height
13m
Geographic Range
5NM

Location

City
Rishiri and Rebun, Hokkaido
Country
🇯🇵JP
Latitude
45.1119°
Longitude
141.2069°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
14m
Tower Shape
quadrilateral
Tower Color
white and red
Material
metal

Structure: Quadrilateral latticed tower, red and white rectangular daymark; 14

References & Identifiers

Admiralty No.
M6926
NGA No.
1392
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Frequently Asked Questions

How do mariners identify Senpōshi Kō South Breakwater Lighthouse at night?+
Senpōshi Kō South Breakwater displays the characteristic Iso R 6s — 1 red 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. The red color may indicate a specific sector or warning zone.
Which ports and harbors does Senpōshi Kō South Breakwater Lighthouse guide vessels into?+
Senpōshi Kō South Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Iwaki at 4.6 NM to the ENE. Other ports served include Oniwaki (4.7 NM ENE), Kutsugata (5.6 NM NNW), Oshidomari (7.9 NM N), Shido (7.9 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Senpōshi Kō South Breakwater Lighthouse still active and maintained?+
Yes, Senpōshi 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.
How can I track vessels near Senpōshi Kō South Breakwater Lighthouse?+
You can track vessels near Senpōshi 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.