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

Imaisaki Lighthouse

Fl (2) W 7s🇯🇵Nansei Shoto, JPOperational

Location & Light Range

About Imaisaki Lighthouse

This white, square lighthouse stands 63 meters tall, constructed from masonry. Its focal height reaches 76 meters above sea level. The structure is identified by the Admiralty number M4767.6 and NGA list number 13140. It emits a single white flash, visible for a geographic range of 20 nautical miles.

Light & Optic

Characteristic Signature
Fl (2) W 7s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
7s
Raw Code
Fl
Focal Height
76m
Light Range
12NM (22.2 km)
Geographic Range
20NM

Location

City
Nansei Shoto
Country
🇯🇵JP
Latitude
28.4764°
Longitude
129.6211°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
63m
Tower Shape
square
Tower Color
white
Material
masonry

Structure: White tower; 33

References & Identifiers

Admiralty No.
M4767.6
NGA No.
13140
OpenStreetMap
View on OSM →
Live tracking · 50,000+ mariners

Find Imaisaki 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 Imaisaki Lighthouse be seen?+
With a focal height of 76 meters and a nominal range of 12 nautical miles (approximately 22.2 km), Imaisaki 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 Imaisaki Lighthouse at night?+
Imaisaki displays the characteristic Fl (2) W 7s — 2 white flashes every 7 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 Imaisaki Lighthouse guide vessels into?+
Imaisaki Lighthouse assists vessels approaching 5 nearby ports. The closest is Tatsugo at 1.1 NM to the SSW. Other ports served include Yani (2.4 NM NE), Akakina (2.8 NM ESE), Ashitoku (3.3 NM S), Toguchi (7.1 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Imaisaki Lighthouse still active and maintained?+
Yes, Imaisaki 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.
How can I track vessels near Imaisaki Lighthouse?+
You can track vessels near Imaisaki 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.