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Narugashimaoki Lighthouse

Q (3) W 10s🇯🇵Seto Naikai Eastern, JPOperational

Location & Light Range

About Narugashimaoki Lighthouse

Narugashimaoki is a black and yellow mast lighthouse standing 56 meters tall. Its focal height is 19 meters above sea level. The structure is classified as an East Cardinal beacon, distinguished by its black body and topmark, with yellow banding. This lighthouse emits three quick white flashes every 10 seconds.

Light & Optic

Characteristic Signature
Q (3) W 10s
Flash Type
Quick
Light Color
White
Flash Count
3 flashes
Interval
10s
Raw Code
Q.(3)W. period 10s
Focal Height
19m
Light Range
7NM (13.0 km)
Geographic Range
7NM

Location

City
Seto Naikai Eastern
Country
🇯🇵JP
Latitude
34.2888°
Longitude
134.9622°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
56m
Tower Shape
mast
Tower Color
black and yellow

Structure: E. CARDINAL (IALA B) Black beacon, black topmark, yellow banded; 56

References & Identifiers

Admiralty No.
M5815.5
NGA No.
7524
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Frequently Asked Questions

How far offshore can Narugashimaoki Lighthouse be seen?+
With a focal height of 19 meters and a nominal range of 7 nautical miles (approximately 13.0 km), Narugashimaoki 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 Narugashimaoki Lighthouse at night?+
Narugashimaoki displays the characteristic Q (3) W 10s — 3 white flashes every 10 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 Narugashimaoki Lighthouse guide vessels into?+
Narugashimaoki Lighthouse assists vessels approaching 5 nearby ports. The closest is Fuke at 8.8 NM to the ENE. Other ports served include Kainan (10 NM ESE), Wakayama (10 NM ESE), Tannowa (11.5 NM ENE), Tsushi (11.8 NM NW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Narugashimaoki Lighthouse still active and maintained?+
Yes, Narugashimaoki 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 Narugashimaoki Lighthouse?+
Narugashimaoki 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 Narugashimaoki Lighthouse?+
You can track vessels near Narugashimaoki 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.