Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Itamochi Lighthouse

Oc White 4s🇯🇵Tadotsu, JPOperational

Location & Light Range

About Itamochi Lighthouse

Also known as: Itamochi (Itamoti) Hana (Takami Shima)

This cylindrical concrete tower stands 8.5 meters tall and has a focal height of 11 meters. It is attached to a small equipment shelter. The light emits a white flash every 4 seconds, visible for 10.7 nautical miles. The lighthouse is operational and its site is open to the public, though the tower itself is closed. It is located in Tadotsu within the Kagawa Prefecture.

Why it matters: This active aid to navigation provides guidance for local shipping and fishing vessels navigating the Japanese coast.

Light & Optic

Characteristic Signature
Oc White 4s
Flash Type
Occulting
Light Color
White
Interval
4s
Raw Code
Oc W 4s
Focal Height
11m
Light Range
11NM (20.4 km)
Geographic Range
10.7NM

Location

City
Tadotsu
Country
🇯🇵Japan
Region
Kagawa Prefecture
Sea Region
Japan
Latitude
34.3255°
Longitude
133.6631°

References & Identifiers

Nearest Port
Enoura, Kagawa(3.2 km)
Admiralty No.
M5503
NGA No.
8248
ARLHS No.
JPN-2446

Tower & Structure

Tower Height
8.5m
Tower Shape
cylindrical
Material
concrete

Structure: round cylindrical concrete tower attached to a small equipment shelter

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
Live tracking · 50,000+ mariners

Find Itamochi Lighthouse on the live nautical map

Plan voyages near Japan, see nearby vessels in real time, and explore 14,900+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How far offshore can Itamochi Lighthouse be seen?+
With a focal height of 11 meters and a nominal range of 11 nautical miles (approximately 20.4 km), Itamochi 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 Itamochi Lighthouse at night?+
Itamochi displays the characteristic Oc White 4s. 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Itamochi Lighthouse guide vessels into?+
Itamochi Lighthouse assists vessels approaching 5 nearby ports. The closest is Sanagi at 1.7 NM to the WNW. Other ports served include Awashima (3.8 NM SSW), Tadotsu (4.8 NM SE), Takuma (5.8 NM S), Aoki (6.2 NM ESE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Itamochi Lighthouse still active and maintained?+
Yes, Itamochi 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 Itamochi Lighthouse?+
Itamochi 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 Itamochi Lighthouse?+
You can track vessels near Itamochi 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.