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

Iburi Kō Lighthouse

Fl (2) Green 6s🇯🇵Tosashimizu, JPOperational

Location & Light Range

About Iburi Kō Lighthouse

Also known as: Iburi Kō (Outer Breakwater)

Iburi Kō lighthouse is a white, cylindrical concrete tower standing 10 meters tall. Its operational light is situated at the north end of the detached breakwater of Iburi fishing port, about 15 kilometers north of Cape Ashizuri. The structure features a round concrete tower with a flared top, connected to an equipment shelter. It emits a green light, flashing once every 6 seconds. The focal height of the light is 15 meters, providing a geographic range of 11.9 nautical miles.

Why it matters: This light marks the northern extremity of the breakwater, warning vessels of this submerged hazard and aiding safe passage into Iburi fishing port.

Light & Optic

Characteristic Signature
Fl (2) Green 6s
Flash Type
Flashing
Light Color
Green
Flash Count
2 flashes
Interval
6s
Raw Code
Fl G 6s
Focal Height
15m
Geographic Range
11.9NM

Location

City
Tosashimizu
Country
🇯🇵Japan
Region
Kochi Prefecture
Sea Region
Located at the north end of the detached breakwater of Iburi, a fishing port about 15 km north of Cape Ashizuri.
Latitude
32.8035°
Longitude
132.9666°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

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

Structure: round concrete tower with a flared top, attached to a small equipment shelter

References & Identifiers

Nearest Port
Tosashimizu(1.8 km)
Admiralty No.
M5601.8
NGA No.
10270
Live tracking · 50,000+ mariners

Find Iburi Kō Lighthouse on the live nautical map

Plan voyages near Japan, 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 Iburi Kō Lighthouse at night?+
Iburi Kō displays the characteristic Fl (2) Green 6s — 2 green 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Iburi Kō Lighthouse guide vessels into?+
Iburi Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Tosashimizu at 1.8 NM to the S. Other ports served include Ashizuri (1.9 NM SW), Kozukushi (13.4 NM WNW), Ozuku (13.5 NM WNW), Sukumowan (14.4 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Iburi Kō Lighthouse still active and maintained?+
Yes, Iburi Kō 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 Iburi Kō Lighthouse?+
Iburi Kō 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 Iburi Kō Lighthouse?+
You can track vessels near Iburi Kō 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.