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Irago Lighthouse

Iso W 6s🇯🇵Nagoya (Aichi Prefecture), JPOperational

Location & Light Range

About Irago Lighthouse

The Irago lighthouse, constructed in 1929, stands as a 14.8-meter white tower. Its light originates from a focal height of 16 meters above sea level. This lighthouse emits an isophase white light, which completes a full cycle every 6 seconds. The visible arc of its light spans from 285 degrees to 147 degrees.

Why it matters: The lighthouse provides a 5 nautical mile geographic range.

Light & Optic

Characteristic Signature
Iso W 6s
Flash Type
Isophase
Light Color
White
Flash Count
1 flash
Interval
6s
Raw Code
Iso.W. period 6s
Focal Height
16m
Geographic Range
5NM

Construction & History

Year Built
1929

References & Identifiers

Admiralty No.
M6052
NGA No.
5812
Wikidata
Q11379732 →

Tower & Structure

Tower Height
14.8m
Tower Color
white

Structure: White tower; 56. Visible 285°-147°. Traffic Signals

Location

City
Nagoya (Aichi Prefecture)
Country
🇯🇵JP
Latitude
34.5793°
Longitude
137.0161°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Irago Lighthouse at night?+
Irago displays the characteristic Iso W 6s — 1 white 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.
Which ports and harbors does Irago Lighthouse guide vessels into?+
Irago Lighthouse assists vessels approaching 5 nearby ports. The closest is Fukue, Aichi at 6.1 NM to the NE. Other ports served include Morozaki (7.6 NM NNW), Suga (7.6 NM SW), Toyohama, Aichi (8.5 NM NNW), Toba (10.2 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Irago Lighthouse still active and maintained?+
Yes, Irago 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 Irago Lighthouse?+
Irago 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 Irago Lighthouse?+
You can track vessels near Irago 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.