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Ikadaiso Lighthouse

Mo R 8s🇯🇵Seto Naikai Western, JPOperational

Location & Light Range

About Ikadaiso Lighthouse

Ikadaiso Lighthouse emits a single red light. The characteristic is three red flashes grouped together, repeating every 8 seconds. Its focal height reaches 14 meters above sea level. The geographic range of its light is 5 nautical miles. This lighthouse is situated in Seto Naikai Western.

Light & Optic

Characteristic Signature
Mo R 8s
Flash Type
Morse
Light Color
Red
Flash Count
1 flash
Interval
8s
Raw Code
Mo.(D)R. period 8s
Focal Height
14m
Light Range
5NM (9.3 km)
Geographic Range
5NM

References & Identifiers

Admiralty No.
M5454
NGA No.
8760

Location

City
Seto Naikai Western
Country
🇯🇵JP
Latitude
34.1456°
Longitude
132.9346°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How far offshore can Ikadaiso Lighthouse be seen?+
With a focal height of 14 meters and a nominal range of 5 nautical miles (approximately 9.3 km), Ikadaiso 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 Ikadaiso Lighthouse at night?+
Ikadaiso displays the characteristic Mo R 8s — 1 red flash every 8 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 Ikadaiso Lighthouse guide vessels into?+
Ikadaiso Lighthouse assists vessels approaching 5 nearby ports. The closest is Namikata at 1.6 NM to the SE. Other ports served include Hashihama (2.8 NM SE), Okamura (3.2 NM NW), Yoshiumi (5 NM E), Kinoe (5.5 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ikadaiso Lighthouse still active and maintained?+
Yes, Ikadaiso 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 Ikadaiso Lighthouse?+
Ikadaiso 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 Ikadaiso Lighthouse?+
You can track vessels near Ikadaiso 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.