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

Onahama Kō East Breakwater Lighthouse

Fl (2) Red 6s🇯🇵Iwaki, JPOperational

Location & Light Range

About Onahama Kō East Breakwater Lighthouse

This red concrete post lighthouse stands 10 meters tall, with its light at a focal height of 14 meters. It is situated at the end of the east breakwater in Onahama, marking the entrance to the port. The structure consists of the post attached to a square, single-story concrete equipment shelter. The light emits a single red flash every 6 seconds and has a geographic range of 11.6 nautical miles. This aid was relocated due to an extension of the breakwater.

Why it matters: This light specifically marks the extended east breakwater, guiding maritime traffic into and out of Onahama Kō.

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
14m
Geographic Range
11.6NM

Construction & History

Significant events: breakwater extended, lighthouse relocated

References & Identifiers

Nearest Port
Onahama(1.1 km)
Admiralty No.
M6500.4
NGA No.
4612
ARLHS No.
JPN-1358

Tower & Structure

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

Structure: A 10m red concrete post attached to a square 1-story concrete equipment shelter.

Location

City
Iwaki
Country
🇯🇵Japan
Region
Fukushima Prefecture
Sea Region
Onahama, at the end of the east breakwater
Latitude
36.9335°
Longitude
140.9079°

Nearby Vessels

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

Find Onahama Kō East Breakwater 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 Onahama Kō East Breakwater Lighthouse at night?+
Onahama Kō East 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 Onahama Kō East Breakwater Lighthouse guide vessels into?+
Onahama Kō East Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Ishiwaki at 0.4 NM to the W. Other ports served include Onahama (1.1 NM W), Nakanosaku (2.6 NM NE), Ena (3.3 NM NE), Hirakata (7.2 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Onahama Kō East Breakwater Lighthouse still active and maintained?+
Yes, Onahama Kō East 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 Onahama Kō East Breakwater Lighthouse?+
Onahama Kō East 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 Onahama Kō East Breakwater Lighthouse?+
You can track vessels near Onahama Kō East 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.