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Sanuki-misaki Lighthouse

Iso W 8s🇯🇵Seto Naikai Eastern, JPOperational

Location & Light Range

About Sanuki-misaki Lighthouse

This square latticed tower stands 21 meters tall and displays a white and red color scheme. Its daymark is rectangular, also in red and white, with a red triangle at its center. The isophase white light operates on an 8-second cycle. The light source is positioned 69 meters above sea level, providing a geographic range of 12 nautical miles.

Light & Optic

Characteristic Signature
Iso W 8s
Flash Type
Isophase
Light Color
White
Flash Count
1 flash
Interval
8s
Raw Code
Iso.W. period 8s
Focal Height
69m
Light Range
12NM (22.2 km)
Geographic Range
12NM

Location

City
Seto Naikai Eastern
Country
🇯🇵JP
Latitude
34.2618°
Longitude
133.5602°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
21m
Tower Shape
square
Tower Color
white and red

Structure: Square latticed tower, red and white rectangular daymark, red triangle in center; 21

References & Identifiers

Admiralty No.
M5499
NGA No.
8376
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Frequently Asked Questions

How far offshore can Sanuki-misaki Lighthouse be seen?+
With a focal height of 69 meters and a nominal range of 12 nautical miles (approximately 22.2 km), Sanuki-misaki 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 Sanuki-misaki Lighthouse at night?+
Sanuki-misaki displays the characteristic Iso W 8s — 1 white flash every 8 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 Sanuki-misaki Lighthouse guide vessels into?+
Sanuki-misaki Lighthouse assists vessels approaching 5 nearby ports. The closest is Ohama, Ehime at 2.9 NM to the SE. Other ports served include Awashima (3.8 NM E), Nio (5.3 NM SE), Sanagi (5.6 NM NE), Takuma (5.7 NM ESE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Sanuki-misaki Lighthouse still active and maintained?+
Yes, Sanuki-misaki 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 Sanuki-misaki Lighthouse?+
Sanuki-misaki 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 Sanuki-misaki Lighthouse?+
You can track vessels near Sanuki-misaki 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.