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Aki-Shiraishi Lighthouse

Fl (2) W 5s🇯🇵Seto Naikai Western, JPOperational

Location & Light Range

About Aki-Shiraishi Lighthouse

This isolated danger beacon is positioned in Seto Naikai Western. The structure is painted black with a red band encircling its body. It features a black topmark, distinguishing its design. The beacon emits two white flashes every 5 seconds, providing a distinct warning. Its focal height reaches 19 meters above the water.

Light & Optic

Characteristic Signature
Fl (2) W 5s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
5s
Raw Code
Fl.(2)W. period 5s
Focal Height
19m
Light Range
7NM (13.0 km)
Geographic Range
7NM

Location

City
Seto Naikai Western
Country
🇯🇵JP
Latitude
34.1759°
Longitude
132.3513°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Color
black and red

Structure: ISOLATED DANGER (IALA B) Black beacon, black topmark, red banded,

References & Identifiers

Admiralty No.
M5668
NGA No.
8924
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Frequently Asked Questions

How far offshore can Aki-Shiraishi Lighthouse be seen?+
With a focal height of 19 meters and a nominal range of 7 nautical miles (approximately 13.0 km), Aki-Shiraishi 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 Aki-Shiraishi Lighthouse at night?+
Aki-Shiraishi displays the characteristic Fl (2) W 5s — 2 white flashes every 5 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 Aki-Shiraishi Lighthouse guide vessels into?+
Aki-Shiraishi Lighthouse assists vessels approaching 5 nearby ports. The closest is Kanokawa at 4.5 NM to the E. Other ports served include Iwakuni (5.6 NM W), Mitaka, Hiroshima (5.9 NM NNE), Otake (6.1 NM NW), Itsukushima (7.8 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Aki-Shiraishi Lighthouse still active and maintained?+
Yes, Aki-Shiraishi 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 Aki-Shiraishi Lighthouse?+
Aki-Shiraishi 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 Aki-Shiraishi Lighthouse?+
You can track vessels near Aki-Shiraishi 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.