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Ashizuri Lighthouse

Fl (3) W 30s🇯🇵Kōchi (Southern Shikoku), JPOperational

Location & Light Range

About Ashizuri Lighthouse

This white lighthouse stands 59 meters tall, with its focal plane at 61 meters above sea level. The light emits three white flashes every 30 seconds. Its characteristic beam is visible across a 190-degree arc, from 201 to 091 degrees. This navigational aid offers a geographic range of 20 nautical miles.

Light & Optic

Characteristic Signature
Fl (3) W 30s
Flash Type
Flashing
Light Color
White
Flash Count
3 flashes
Interval
30s
Raw Code
Fl.(3)W. period 30s
Focal Height
61m
Geographic Range
20NM

Location

City
Kōchi (Southern Shikoku)
Country
🇯🇵JP
Latitude
32.7240°
Longitude
133.0203°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
59m
Tower Color
white

Structure: White tower; 59. Visible 201°-091°

References & Identifiers

Admiralty No.
M5602
NGA No.
10284
Wikipedia
Read on Wikipedia →
Wikidata
Q11636893 →
OpenStreetMap
View on OSM →
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Frequently Asked Questions

How do mariners identify Ashizuri Lighthouse at night?+
Ashizuri displays the characteristic Fl (3) W 30s — 3 white flashes every 30 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 Ashizuri Lighthouse guide vessels into?+
Ashizuri Lighthouse assists vessels approaching 5 nearby ports. The closest is Tosashimizu at 4.2 NM to the NW. Other ports served include Ashizuri (5.4 NM NW), Kozukushi (17.9 NM WNW), Ozuku (18.1 NM WNW), Sukumowan (19.2 NM NW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ashizuri Lighthouse still active and maintained?+
Yes, Ashizuri 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 Ashizuri Lighthouse?+
Ashizuri 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 Ashizuri Lighthouse?+
You can track vessels near Ashizuri 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.