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Akashi Kō Outer Harbor West Breakwater Lighthouse

Iso Red 6s🇯🇵Akashi, JPOperational

Location & Light Range

About Akashi Kō Outer Harbor West Breakwater Lighthouse

Also known as: Akasi

This concrete lighthouse stands 9 meters tall on the west breakwater of Akashi Harbor's outer section. Its cylindrical, hourglass shape and white exterior are functional elements of its design. The light itself, positioned 13 meters above sea level, emits a red flash on a 6-second cycle. It offers a geographic range of 11.3 nautical miles. This structure is located just 0.1 kilometers from the port of Akashi. It has been an active navigational aid since its construction.

Why it matters: This lighthouse is indispensable for safe navigation into Akashi Harbor, a key port for local commerce and fishing fleets. It guides vessels entering from the Seto Inland Sea, ensuring they avoid the breakwater and other dangers.

Light & Optic

Characteristic Signature
Iso Red 6s
Flash Type
Isophase
Light Color
Red
Interval
6s
Raw Code
Iso R 6s
Focal Height
13m
Light Range
11NM (20.4 km)
Geographic Range
11.3NM

Location

City
Akashi
Country
🇯🇵Japan
Region
Hyogo Prefecture
Sea Region
Akashi Harbor, on the outer harbor's west breakwater
Latitude
34.6413°
Longitude
134.9905°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
9m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round hourglass-shaped concrete tower

References & Identifiers

Nearest Port
Akashi(0.1 km)
Admiralty No.
M5785
NGA No.
7656
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Frequently Asked Questions

How far offshore can Akashi Kō Outer Harbor West Breakwater Lighthouse be seen?+
With a focal height of 13 meters and a nominal range of 11 nautical miles (approximately 20.4 km), Akashi Kō Outer Harbor West Breakwater is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. This range makes it a significant coastal navigation aid for vessels transiting the area.
How do mariners identify Akashi Kō Outer Harbor West Breakwater Lighthouse at night?+
Akashi Kō Outer Harbor West Breakwater displays the characteristic Iso Red 6s. 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 Akashi Kō Outer Harbor West Breakwater Lighthouse guide vessels into?+
Akashi Kō Outer Harbor West Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Akashi at 0.1 NM to the NW. Other ports served include Iwaya (3.1 NM SSE), Eigashima (4.4 NM WNW), Higashiharima (8.5 NM WNW), Kakogawa (8.5 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Akashi Kō Outer Harbor West Breakwater Lighthouse still active and maintained?+
Yes, Akashi Kō Outer Harbor 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 Akashi Kō Outer Harbor West Breakwater Lighthouse?+
Akashi Kō Outer Harbor 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 Akashi Kō Outer Harbor West Breakwater Lighthouse?+
You can track vessels near Akashi Kō Outer Harbor 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.