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Mushima Lighthouse

Iso W 6s🇯🇵Seto Naikai Eastern, JPOperational

Location & Light Range

About Mushima Lighthouse

This square lighthouse features a white tower topped with red. It rises 19 meters from its base, with the light positioned 70 meters above sea level. The station emits an isophase white light on a 6-second cycle. Its geographic range extends to 12 nautical miles.

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
70m
Light Range
14NM (25.9 km)
Geographic Range
12NM

Location

City
Seto Naikai Eastern
Country
🇯🇵JP
Latitude
34.2993°
Longitude
133.5342°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
19m
Tower Shape
square
Tower Color
white and red

Structure: White square tower, red top; 19

References & Identifiers

Admiralty No.
M5500
NGA No.
8380
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Frequently Asked Questions

How far offshore can Mushima Lighthouse be seen?+
With a focal height of 70 meters and a nominal range of 14 nautical miles (approximately 25.9 km), Mushima 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 Mushima Lighthouse at night?+
Mushima 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 Mushima Lighthouse guide vessels into?+
Mushima Lighthouse assists vessels approaching 5 nearby ports. The closest is Sanagi at 5.2 NM to the ENE. Other ports served include Awashima (5.4 NM ESE), Ohama, Ehime (5.4 NM SE), Nio (7.9 NM SE), Takuma (7.9 NM ESE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Mushima Lighthouse still active and maintained?+
Yes, Mushima 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 Mushima Lighthouse?+
Mushima 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 Mushima Lighthouse?+
You can track vessels near Mushima 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.