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Iwaya Kō West Breakwater Lighthouse

Fl R 4s🇯🇵Seto Naikai Eastern, JPOperational

This lighthouse is located on the west breakwater at Iwaya Kō. The structure stands 12 meters tall and is painted green. It emits a red light with a flashing characteristic. The geographic range of this light is 8 nautical miles.

Characteristic Signature
Fl R 4s
Flash Type
Flashing
Light Color
Red
Flash Count
1 flash
Interval
4s
Raw Code
Fl
Focal Height
12m
Light Range
3NM (5.6 km)
Geographic Range
8NM
City
Seto Naikai Eastern
Country
🇯🇵JP
Latitude
34.5934°
Longitude
135.0157°
Flag
Type
Name
Dist.
Tower Height
12m
Tower Color
green
Admiralty No.
M5834
NGA No.
7640
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How far offshore can Iwaya Kō West Breakwater Lighthouse be seen?+
With a focal height of 12 meters and a nominal range of 3 nautical miles (approximately 5.6 km), Iwaya Kō West Breakwater is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. As a shorter-range light, it primarily serves nearshore and coastal traffic.
How do mariners identify Iwaya Kō West Breakwater Lighthouse at night?+
Iwaya Kō West Breakwater displays the characteristic Fl R 4s — 1 red flash every 4 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 Iwaya Kō West Breakwater Lighthouse guide vessels into?+
Iwaya Kō West Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Iwaya at 0 NM to the NNE. Other ports served include Akashi (3.2 NM NNW), Eigashima (7.1 NM NW), Kobe (9.2 NM NE), Higashiharima (11 NM NW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Iwaya Kō West Breakwater Lighthouse still active and maintained?+
Yes, Iwaya Kō West 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 Iwaya Kō West Breakwater Lighthouse?+
Iwaya Kō West 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 Iwaya Kō West Breakwater Lighthouse?+
You can track vessels near Iwaya Kō West 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.