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Hiraiso Lighthouse

Q (6) W 15s🇯🇵Seto Naikai Eastern, JPOperational

Location & Light Range

About Hiraiso Lighthouse

This S. Cardinal beacon stands 39 meters tall and is constructed of concrete. Its round tower features a distinctive black and yellow color scheme, with the topmark in yellow and the base in black. The light emits a single white flash every 15 seconds. The focal height is 14 meters, and it has a geographic range of 7 nautical miles.

Light & Optic

Characteristic Signature
Q (6) W 15s
Flash Type
Quick
Light Color
White
Flash Count
6 flashes
Interval
15s
Raw Code
Fl.W. period 15s
Focal Height
14m
Light Range
7NM (13.0 km)
Geographic Range
7NM

Location

City
Seto Naikai Eastern
Country
🇯🇵JP
Latitude
34.6216°
Longitude
135.0656°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
39m
Tower Shape
round
Tower Color
black and yellow
Material
concrete

Structure: S. CARDINAL (IALA B) Black round concrete beacon, yellow topmark, black base; 39

References & Identifiers

Admiralty No.
M5840
NGA No.
7500
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Frequently Asked Questions

How far offshore can Hiraiso Lighthouse be seen?+
With a focal height of 14 meters and a nominal range of 7 nautical miles (approximately 13.0 km), Hiraiso 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 Hiraiso Lighthouse at night?+
Hiraiso displays the characteristic Q (6) W 15s — 6 white flashes every 15 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 Hiraiso Lighthouse guide vessels into?+
Hiraiso Lighthouse assists vessels approaching 5 nearby ports. The closest is Iwaya at 3 NM to the SW. Other ports served include Akashi (4 NM WNW), Kobe (6.2 NM NE), Eigashima (8.3 NM WNW), Higashiharima (12.4 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Hiraiso Lighthouse still active and maintained?+
Yes, Hiraiso 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 Hiraiso Lighthouse?+
Hiraiso 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 Hiraiso Lighthouse?+
You can track vessels near Hiraiso 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.