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

Usuisihana Lighthouse

Fl W 15s🇯🇵Seto Naikai Western, JPOperational

Location & Light Range

About Usuisihana Lighthouse

This white concrete tower stands 56 meters tall in Seto Naikai Western. Its focal height reaches 30 meters above sea level. The light emits a single white flash every 15 seconds. Its visibility extends across a sector from 190 to 057 degrees. The structure is situated on the southeast head of a breakwater.

Light & Optic

Characteristic Signature
Fl W 15s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
15s
Raw Code
Fl.W. period 15s
Focal Height
30m
Light Range
16NM (29.6 km)
Geographic Range
16NM

Location

City
Seto Naikai Western
Country
🇯🇵JP
Latitude
33.4071°
Longitude
131.7030°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
56m
Tower Color
white
Material
concrete

Structure: White concrete structure; 56. Visible 190°-057°. 9422 Musasi, breakwater, SE. head. 33° 30.1´ N

References & Identifiers

Admiralty No.
M4962
NGA No.
9421
Live tracking · 50,000+ mariners

Find Usuisihana Lighthouse on the live nautical map

Plan voyages near JP, 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 Usuisihana Lighthouse be seen?+
With a focal height of 30 meters and a nominal range of 16 nautical miles (approximately 29.6 km), Usuisihana is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. Lights of this range are typically used as landfall lights by vessels approaching from the open sea.
How do mariners identify Usuisihana Lighthouse at night?+
Usuisihana displays the characteristic Fl W 15s — 1 white flash every 15 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 Usuisihana Lighthouse guide vessels into?+
Usuisihana Lighthouse assists vessels approaching 5 nearby ports. The closest is Morie at 2.7 NM to the W. Other ports served include Kitsuki (4.4 NM W), Musashi (5.6 NM NNE), Oita (9.6 NM S), Kunisaki (9.7 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Usuisihana Lighthouse still active and maintained?+
Yes, Usuisihana 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 Usuisihana Lighthouse?+
Usuisihana 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 Usuisihana Lighthouse?+
You can track vessels near Usuisihana 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.