Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Senpōshi Kō Outer Breakwater Lighthouse

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

Location & Light Range

About Senpōshi Kō Outer Breakwater Lighthouse

The Senpōshi Kō Outer Breakwater light is situated in the Hokkaido region, serving the Rishiri and Rebun areas. This navigational aid emits a green light, characterized by an isophase pattern that repeats every 6 seconds. Its focal height reaches 13 meters above sea level. The light has a geographic range of 5 nautical miles.

Light & Optic

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

References & Identifiers

Admiralty No.
M6926
NGA No.
1392

Location

City
Rishiri and Rebun, Hokkaido
Country
🇯🇵JP
Latitude
45.1104°
Longitude
141.2071°

Nearby Vessels

Flag
Type
Name
Dist.
Live tracking · 50,000+ mariners

Find Senpōshi Kō Outer Breakwater Lighthouse on the live nautical map

Plan voyages near JP, see nearby vessels in real time, and explore 14,900+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Senpōshi Kō Outer Breakwater Lighthouse at night?+
Senpōshi Kō Outer Breakwater displays the characteristic Iso G 6s — 1 green 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Senpōshi Kō Outer Breakwater Lighthouse guide vessels into?+
Senpōshi Kō Outer 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 (5.7 NM NNW), Oshidomari (8 NM N), Shido (8 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Senpōshi Kō Outer Breakwater Lighthouse still active and maintained?+
Yes, Senpōshi Kō Outer 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 Outer Breakwater Lighthouse?+
You can track vessels near Senpōshi Kō Outer 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.